KR101740852B1

KR101740852B1 - X-ray imaging machine, method for generating panorama image using the same and method for generating panorama image

Info

Publication number: KR101740852B1
Application number: KR1020160014504A
Authority: KR
Inventors: 박병욱; 전진환; 황찬우; 이창윤; 조규정
Original assignee: (주)제노레이
Priority date: 2016-02-04
Filing date: 2016-02-04
Publication date: 2017-06-09

Abstract

An X-ray radiographing apparatus according to an embodiment of the present invention includes: an X-ray generating unit for radiating X-rays to a target object during an exposure period; An X-ray detector for detecting X-rays transmitted through the object and generating a plurality of frames during at least a part of the exposure period; And a control unit for superimposing a plurality of frames transmitted from the X-ray detection unit to form a panoramic image, wherein the panoramic image is constructed by arranging a plurality of frames superimposed along a reference line, And the second reference line region is a reference for overlapping at least two or more frames generated between the first viewpoint and the second viewpoint, and the second reference line region is a reference for overlapping at least two frames generated between the third viewpoint and the second viewpoint, The first reference line region and the second reference line region have different angles with respect to the lower boundary line of the plurality of frames.

Description

TECHNICAL FIELD [0001] The present invention relates to a panoramic image generation method and an panoramic image generation method using an X-ray radiograph, an X-ray radiograph, and a panoramic image generation method using the X-

An embodiment relates to an X-ray radiographing apparatus.

The present invention relates to a panoramic image generation method using an X-ray radiograph.

The embodiment relates to a panoramic image generation method.

In dentistry, there is a method of photographing a panoramic image of the entire structure of teeth and alveolar bone using a dental X-ray imaging apparatus in the course of treatment or orthodontic treatment from the past, a method of photographing the entire structure of the teeth and alveolar bone from the anterior to posterior, A method of capturing images on the left and right cephalographs and a method of inserting a small sensor for receiving an x-ray beam into the patient's mouth and photographing a narrow x-ray beam from outside the oral cavity.

Among them, the panoramic imaging method is widely used because it can observe the entire area of the teeth and the alveolar bone in a plan view, and can reduce the amount of the patient's exposure.

In a conventional panoramic imaging apparatus, an X-ray generator and an X-ray detector are arranged to face each other, and the X-ray generator irradiates X-rays toward the head of the patient. The X- Lt; / RTI >

Conventional panoramic imaging apparatuses perform X-ray imaging using an X-ray detection unit larger than a patient's arch to capture all the arches of a curved patient, and unnecessary X-ray exposure occurs during X-ray imaging, There is a problem in that the manufacturing cost is increased by using a large X-ray detecting unit.

The embodiment provides an X-ray machine capable of reducing X-ray dose.

The embodiment provides a panoramic image generation method capable of reducing manufacturing cost.

An X-ray photographing apparatus according to an embodiment includes an X-ray generating unit for irradiating X-rays to a target object during an exposure period; An X-ray detector for detecting X-rays transmitted through the object and generating a plurality of frames during at least a part of the exposure period; And a control unit for generating a panoramic image by superimposing a plurality of frames received from the X-ray detection unit, wherein the panoramic image is configured by arranging a plurality of frames superimposed along a reference line, Wherein the first reference line is a line connecting the first frame of the first viewpoint and the center point of the second frame of the second viewpoint and the second reference line is a line connecting the first frame of the first viewpoint and the center point of the second frame of the second viewpoint, And the first reference line and the second reference line may have different slopes from each other.

A method of generating a panoramic image using an X-ray photographing apparatus includes: irradiating X-rays to a target object during an exposure period; Detecting X-rays transmitted through the object to generate a plurality of frames for at least a part of the exposure period; And generating a panoramic image by superimposing the plurality of frames, wherein the panoramic image is constituted by a plurality of frames superimposed and arranged along a reference line, and the reference line includes a plurality of frames including a first reference line and a second reference line Wherein the first reference line is a line connecting the first frame of the first viewpoint and the center point of the second frame of the second viewpoint and the second reference line is a line connecting the third frame of the third viewpoint and the third reference frame, And the center line of the fourth frame of the fourth view point, and the first reference line and the second reference line have different slopes.

A method of generating a panoramic image according to an exemplary embodiment of the present invention includes: receiving a plurality of frames generated by detecting X-rays transmitted through a target object; And generating a panoramic image by superimposing the plurality of frames, wherein the panoramic image is constituted by a plurality of frames superimposed and arranged along a reference line, and the reference line includes a plurality of frames including a first reference line and a second reference line Wherein the first reference line is a line connecting the first frame of the first viewpoint and the center point of the second frame of the second viewpoint and the second reference line is a line connecting the third frame of the third viewpoint and the third reference frame, And the center line of the fourth frame of the fourth view point, and the first reference line and the second reference line have different slopes.

The X-ray photographing apparatus according to the embodiment can reduce the irradiation range of the X-rays exposed to the object, thereby reducing the X-ray dose.

The panoramic image generation method according to the embodiment can generate a panoramic image with a relatively small X-ray detector, thereby reducing manufacturing cost.

FIG. 1 is a block diagram for explaining a system including an X-ray photographing apparatus and an electronic apparatus associated with the X-ray photographing apparatus according to embodiments of the present invention.
2 is a perspective view of an X-ray photographing apparatus according to an embodiment of the present invention.
3 is a side view of an X-ray photographing apparatus according to an embodiment of the present invention.
4 is a front view of an X-ray generation unit of an embodiment of the present invention.
FIG. 5 is a cross-sectional view of the X-ray generating section of FIG. 4 taken along line AA`.
6 is a front view showing an X-ray detecting unit according to an embodiment of the present invention.
7 is an enlarged view showing a part of an image sensor according to an embodiment of the present invention.
8 is a top view showing the rotation of the X-ray generation unit and the X-ray detection unit according to the embodiment of the present invention.
9 is a view showing a linear motion of the X-ray detecting unit according to the embodiment of the present invention.
10 is a flowchart showing an operation method of the X-ray photographing apparatus according to the embodiment of the present invention.
11 is a view showing a movement path of the X-ray detecting unit according to the embodiment of the present invention.
12 is a diagram showing a plurality of frames generated according to an embodiment of the present invention.
13 is a view showing a panoramic image generated by an X-ray photographing apparatus according to an embodiment of the present invention.
14 is an enlarged view of the area A in Fig.
Fig. 15 is an enlarged view of the area B in Fig.
16 is a view showing an actual panoramic image generated using an X-ray photographing apparatus according to an embodiment of the present invention.
17 is a view showing an X-ray detecting unit according to another embodiment of the present invention.
18 is a view showing a movement path of a light receiving region according to another embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept. Other embodiments falling within the scope of the inventive concept may readily be suggested, but are also considered to be within the scope of the present invention.

The same reference numerals are used to designate the same components in the same reference numerals in the drawings of the embodiments.

An X-ray radiographing apparatus according to an embodiment of the present invention includes: an X-ray generating unit for radiating X-rays to a target object during an exposure period; An X-ray detector for detecting X-rays transmitted through the object; And a moving unit for moving the X-ray generating unit and the X-ray detecting unit, wherein the X-ray generating unit moves while drawing an arc having a certain radius of curvature about a rotation axis, And the X-ray detection unit is configured to detect the X-ray of the X-ray from the first point of time to the second point of time, Wherein the linear motion starts at a third point in time that is the same as or later than the first point in time and the linear motion is a point at a fourth point in time that is the same or earlier than the second point in time, And the first difference between the first and second points of time is greater than or equal to the second difference between the third point and the fourth point of time .

The exposure period may start before the first time point, and may end later than the second time point.

The exposure period may start later than the first time point and may terminate earlier than the second time point.

The exposure period may start before the first time point and may end before the second time point.

The exposure period may start later than the first time point, and may end later than the second time point.

The exposure period may be the same as the first difference.

The arc drawn by the X-ray generation unit may be a predefined path.

The X-ray detecting unit may be used in computed tomography (CT).

The linear motion of the X-ray detecting unit may be a reciprocating motion between the first point and the second point.

The X-ray detection unit located at the first point starts the first linear motion at the third time point, reaches the second point at the fifth point in time, and the X-ray detection unit located at the second point reaches the sixth point The second linear motion can start at the fourth point of time and reach the first point at the fourth point of time.

The fifth point and the sixth point may be at the same point in time.

The X-ray detection unit is located at a second point between the fifth point and the sixth point, and between the fifth point and the sixth point, the X-ray detection unit detects an X-ray passing through the lowermost end of the object can do.

The X-ray generating unit may irradiate X-rays so as to correspond to the position of the X-ray detecting unit.

The X-ray generator may linearly move between the third point and the fourth point.

And an optical path restricting unit located between the X-ray generating unit and the object to limit the irradiation range of the X-ray from the X-ray generating unit to output X-rays to a specific area of the object.

The optical path restricting unit may control the light receiving area to move in a linear direction between the third time point and the fourth time point.

The X-ray detecting unit may further include a detector housing in which the X-ray detecting unit is located, and the X-ray detecting unit may be linearly moved by the linear motion of the detector housing.

And a linear movement unit that linearly moves the detection unit housing.

The X-ray generating unit and the X-ray detecting unit can move while maintaining a state in which they face each other.

The X-ray detecting unit may move up and down with reference to the X-ray generating unit.

The radiation region of the X-ray can be limited so as to correspond to the movement of the X-ray detecting portion.

An X-ray photographing apparatus according to an embodiment includes an X-ray generating unit for generating X-rays during an exposure period; A light path limiting unit for limiting an irradiation range of the X-ray to irradiate the X-ray to a target object; An X-ray detecting unit including a light receiving area to which X-rays transmitted through the object are irradiated; And a moving unit for moving the X-ray generating unit and the X-ray detecting unit, wherein the X-ray generating unit moves while drawing an arc having a certain radius of curvature about a rotation axis, Wherein the light receiving region has a constant angle with respect to a plane in which at least one circle having the radius of curvature is located for at least a part of a period between the first point and the second point of time The linear movement is linearly moved in a linear direction and the linear movement is started at a third time point that is the same as or later than the first time point and the linear movement is terminated at a fourth time point that is the same or earlier than the second time point, And the first difference between the first time point and the second time point is greater than or equal to the second difference between the third time point and the fourth time point.

The area of the light receiving area may be smaller than the area of the X-ray detecting part.

Wherein the X-ray detecting unit includes a first interface and a second interface facing each other, and a distance between the first interface and a first interface of the light-receiving area adjacent to the first interface between the first viewpoint and the third viewpoint is And may be smaller than a distance between a second side of the light receiving region adjacent to the second interface and the second interface.

Wherein the X-ray detection unit includes a first interface and a second interface facing each other, and a first side of the light receiving area adjacent to the first interface during a portion of time between the third view and the fourth view, May be greater than the distance between the second side of the light receiving region adjacent to the second interface and the second interface.

The linear movement of the light receiving region may be a reciprocating motion between the first point and the second point.

The light receiving region located at the first point starts the first linear motion at the third point of time and reaches the second point at the fifth point of time and the light receiving region located at the second point of the light point reaches the point 2 linear motion and reach the first point at the fourth point in time.

Wherein the X-ray detection unit includes a first interface and a second interface facing each other, and the X-ray detection unit is disposed between the first interface and the first interface between the third interface and the fifth interface, The distance increases and the distance between the second side of the light receiving region adjacent to the second interface and the second interface can be reduced.

Wherein the X-ray detection unit includes a first interface and a second interface that face each other, and the X-ray detection unit is disposed between the first interface and the first interface between the sixth interface and the fourth interface, The distance decreases and the distance between the second side of the light receiving area adjacent to the second interface and the second interface can increase.

The light receiving region at a specific point in the exposure period may be set to be different from the light receiving region at the specific point in the previous exposure period.

An X-ray radiographing apparatus according to an embodiment of the present invention includes: an X-ray generating unit for radiating X-rays to a target object during an exposure period; An X-ray detector for detecting X-rays transmitted through the object; And a moving unit for moving the X-ray generating unit and the X-ray detecting unit, wherein the X-ray generating unit moves while drawing an arc having a certain radius of curvature about a rotation axis, Ray detector detects the X-ray beam from the X-ray detector for at least a part of the period between the first point and the second point of time when the first mode of the first mode and the second mode is set, Ray generating unit and the X-ray detecting unit are linearly moved in a linear direction having an angle with respect to a plane in which at least one circle having a radius of curvature is located, and when the second mode is set in the first mode and the second mode, The linear motion is performed at a third point in time which is the same as or later than the first point, and the linear motion is performed at the second point in time And the first difference between the first and second points is greater than or equal to the second difference between the third point and the fourth point of time .

A method of generating a panoramic image using an X-ray photographing apparatus according to an exemplary embodiment of the present invention includes: generating X-rays during an exposure period of an X-ray generating unit; Limiting an irradiation range of the X-ray to irradiate the X-ray to a target object; And generating a plurality of frames by an X-ray detecting unit including a light receiving area to which X-rays transmitted through the object are irradiated, wherein the X-ray generating unit draws an arc having a radius of curvature in a certain range around a rotation axis Wherein the motion for drawing the arc starts at a first point in time and ends at a second point in time; and the light receiving region has a radius of curvature at least for a part of a period of time between the first point and the second point of time Wherein the linear movement is linearly moved in a linear direction having a constant angle with respect to a plane on which one circle is located and the linear movement starts at a third time point that is the same as or later than the first time point, And the first difference between the first point and the second point of time is the same as the second point of time between the third point and the fourth point of time, Is greater than or equal to the difference.

A storage medium storing a panorama image generating method using the X-ray radiographing apparatus may be provided.

An X-ray radiographing apparatus according to an embodiment of the present invention includes: an X-ray generating unit for radiating X-rays to a target object during an exposure period; And generating a first frame by detecting X-rays transmitted through the object at a first point in the exposure period, detecting X-rays transmitted through the object at a second point in the exposure period to generate a second frame Wherein the first frame and the second frame include a plurality of pixels and at least the outermost pixel column of the first frame adjacent to the second frame includes a first pixel group and the first pixel Wherein the second frame includes a pixel corresponding to at least one pixel of the second pixel group and the second frame includes a pixel corresponding to the first pixel group do not include.

The second pixel group may be located below the first pixel group.

The second pixel group may be located above the first pixel group.

The pixels of the second frame corresponding to the pixels of the second pixel group of the first frame may have the same pixel value.

The overlapping area defined by the second pixel group of the first frame and the plurality of pixels of the second frame corresponding to the second pixel group may be an area where X-rays transmitted through the same area of the object are detected.

And a moving unit that moves the X-ray generating unit and the X-ray detecting unit, wherein the moving unit moves the X-ray generating unit and the X-ray detecting unit such that the first frame and the second frame have overlapping areas have.

The X-ray detector may be used for computed tomography (CT).

Wherein the X-ray generation unit moves in a circular arc having a radius of curvature of a predetermined range around a rotation axis, and the X-ray detection unit moves at least a part of the X- It is possible to linearly move in a linear direction having an angle with respect to a plane where one circle is located.

Wherein the X-ray generating unit moves the X-ray generating unit in a circular arc having a predetermined radius of curvature around the rotation axis, and the detector housing moves the X- The at least one circle having the radius of curvature may be linearly moved in a linear direction at an angle with respect to a plane on which the at least one circle having the radius of curvature is located.

And an optical path restricting unit positioned between the X-ray generating unit and the object to limit the irradiation range from the X-ray generating unit and outputting X-rays to a specific area of the object.

The X-ray generating unit is moved around an axis of rotation to form an arc having a radius of curvature of a certain range. The X-ray generating unit moves the X- The light receiving region can be controlled to move in a linear direction having an angle with respect to a plane where one circle is located.

An X-ray radiographing apparatus according to an embodiment of the present invention includes: an X-ray generating unit for radiating X-rays to a target object during an exposure period; And generating a first frame by detecting X-rays transmitted through the object at a first point in the exposure period, detecting X-rays transmitted through the object at a second point in the exposure period to generate a second frame , Detects X-rays transmitted through the object at a third time point during the exposure period to generate a third frame, detects X-rays transmitted through the object at a fourth time point during the exposure period, and generates a fourth frame Wherein the first frame, the second frame, the third frame, and the fourth frame include a plurality of pixels, and at least the outermost pixel column of the first frame adjacent to the second frame includes an X- And a second pixel group adjacent to the first pixel group, wherein the second frame includes a pixel corresponding to at least one pixel of the second pixel group, Not including the pixel corresponding to the first pixel group, at least an outermost pixel line of the third frame which are adjacent to the fourth frame can be heat corresponding at least one pixel of the fourth frame.

The X-ray detection unit may reciprocate between the first point and the second point.

The X-ray detecting unit located at the first point starts the first linear motion at the fifth point, reaches the second point at the sixth point, and the X-ray detecting unit located at the second point reaches the seventh point It is possible to start the linear motion and reach the first point at the eighth time point.

The third time point and the fourth time point may be before the fifth time point or after the eighth time point.

The third point of time and the fourth point of time may be a point of time between the sixth point and the seventh point.

The first point and the second point may be a point between the fifth point and the sixth point or a point between the seventh point and the eighth point.

A method of generating a panoramic image of an X-ray photographing apparatus includes: irradiating X-rays to a target object during an exposure period; Detecting a X-ray transmitted through the object at a first point in the exposure period to generate a first frame, detecting X-rays transmitted through the object at a second point in the exposure period to generate a second frame ; And generating a panoramic image using a plurality of frames including the first frame and the second frame, wherein the first frame and the second frame include a plurality of pixels, and the first frame and the second frame are adjacent to the second frame At least the outermost pixel column of the first frame includes a first pixel group and a second pixel group adjacent to the first pixel group and the second frame corresponds to at least one pixel of the second pixel group And the second frame does not include a pixel corresponding to the first pixel group.

The first reference line area and the second reference line area may be continuous areas.

The first reference line area and the second reference line area may be spatially separated areas.

The reference line may be a virtual reference line.

And the center point of each frame is positioned on the reference line so that the panorama image can be generated.

The center point of the frame may be the center of gravity of the frame.

The baseline may be a predefined line.

The reference line may be set to pass through the region of interest of the object.

The baseline of the partial area between the first baseline area and the second baseline area may be parallel to the bottom boundary by the selection of the first through fourth views.

The absolute values of the angles of the first reference line region and the second reference line region may be equal to each other based on the lower boundary line of the plurality of frames by the selection of the first through fourth points of view.

The reference line may include a left reference line area and a right reference line area with respect to a center area of the panoramic image, and the center area may be a region parallel to a lower limit line of the plurality of frames.

Wherein the left baseline region includes a first region adjacent to the central region, a second region spaced from the central region, and a third region positioned between the first region and the second region, The absolute value of the angle of the reference line decreases as the center region approaches the center region and the absolute value of the angle of the reference line increases as the third region becomes closer to the center region.

The second region may have the same angle as the central region.

The left reference line area and the right reference line area may be symmetrical with respect to the center area.

The first frame and the second frame are adjacent frames, and the third frame and the fourth frame are adjacent frames.

The reference line may be defined in advance according to the shape of the object.

At least a portion of the baseline may be vertical relative to a side border of the frame.

And a display unit for outputting an output image including the panoramic image, wherein a width of the output image may be greater than a width of the frame.

The output image may include a dummy area in which no frame is disposed.

An image of the same gradation level can be output to the dummy area.

The output image may include a first boundary line and a second boundary line facing the first boundary line, a fifth frame at the fifth view point may meet the first boundary line, and may not meet the second boundary line.

The sixth frame of the sixth viewpoint may meet with the second borderline and may not meet with the first borderline.

The seventh frame at the seventh viewpoint between the fifth viewpoint and the sixth viewpoint may not meet the first borderline and the second borderline.

A storage medium storing the panorama image generation method may be provided.

<System configuration>

FIG. 1 is a block diagram for explaining a system including an X-ray photographing apparatus and an electronic apparatus associated with the X-ray photographing apparatus according to embodiments of the present invention.

Referring to FIG. 1, an embodiment of the present invention includes an X-ray radiographing apparatus 1000 and an electronic apparatus 2000.

The X-ray photographing apparatus 1000 photographs a target object and transmits the photographed image data to the electronic device 2000. The electronic device 2000 provides the user with a panoramic image using the image data.

The image data may be a plurality of frames. Alternatively, the image data may be a panorama image generated by overlapping a plurality of frames.

When the image data is a plurality of frames, the electronic device 2000 may generate a panorama image by superimposing a plurality of frames received and provide the image to a user.

If the image data is a panorama image, the electronic device 2000 can provide the received panorama image to the user.

The X-ray photographing apparatus 1000 includes a controller 1100, a moving unit 1200, an X-ray generating unit 1300, and an X-ray detecting unit 1400.

The controller 1100 controls operations of the moving unit 1200, the X-ray generation unit 1300, and the X-ray detection unit 1400.

The moving unit 1200 can move the X-ray generating unit 1300 and the X-ray detecting unit 1400. [

The X-ray generating unit 1300 may irradiate X-rays to a target object. The X-ray detecting unit 1400 can generate a plurality of frames by detecting the X-rays transmitted through the object.

The controller 1100 may transmit a plurality of frames received from the X-ray detector 1400 to the electronic device 2000, generate a panoramic image by superimposing the plurality of frames, It can also be delivered.

The electronic device 2000 may include a processor 2100, an input unit 2200, and a display unit 2300.

The processor 2100 may control the input unit 2200 and the display unit 2300. The processor 2100 may control the X-ray radiographing apparatus 1000. The processor 2100 may control the X-ray radiographing apparatus 1000 by transmitting a signal to the controller 1100 of the X-ray radiographing apparatus 1000.

The input unit 2200 can receive a command from a user. The input unit 2200 may be a touch screen, a keyboard, or the like. The display unit 2300 can display information to a user. The information may include a panoramic image. If the input unit 2200 is a touch screen, the display unit 2300 and the input unit 2200 may be overlapped with each other. That is, the input unit 2200 is disposed on the front of the display unit 2300 and can receive commands from a user.

<X-ray machine>

Next, an X-ray radiator related to the embodiments of the present invention will be described.

FIG. 2 is a perspective view of an X-ray photographing apparatus according to an embodiment of the present invention, and FIG. 3 is a side view of an X-ray photographing apparatus according to an embodiment of the present invention.

2 and 3, an X-ray photographing apparatus 1000 according to an embodiment of the present invention includes a controller 1100, a moving unit 1200, an X-ray generating unit 1300, an X-ray detecting unit 1400, (1010). &Lt; / RTI >

The body part 1010 may provide a frame of the X-ray machine 1000 and may have a height greater than the average height of the patient so that a subject's area of the patient's teeth may be photographed.

The controller 1100 may be located inside the body 1010. Alternatively, the controller 1100 may be located outside the body 1010.

The body 1010 may include a lower body 1020 and an upper body 1030. The lower body 1020 may support the upper body 1030. The lower body 1020 and the upper body 1030 may be integrally formed. The upper body 1030 can move up and down with respect to the lower body 1020.

The upper body 1030 may be bent. The upper body 1030 may include a vertical portion 1031 and a horizontal portion 1033. The vertical portion 1031 may have a shape extending in the same direction as the lower body 1020. The horizontal portion 1033 may have a shape extending in a direction perpendicular to the vertical portion 1031. The vertical portion 1031 and the horizontal portion 1033 may be integrally formed.

The moving part 1200 may be positioned below the horizontal part 1033. The moving unit 1200 can rotate without being fixed to the horizontal unit 1033. The moving unit 1200 can rotate while the horizontal unit 1033 is fixed.

The moving unit 1200 can rotate under the control of the controller 1100.

The moving unit 1200 can move at least one of the X-ray generation unit 1300 and the X-ray detection unit 1400. The X-ray generation unit 1300 and the X-ray detection unit 1400 can be rotated about the axis 1201 by the rotation of the movement unit 1200. [ The shaft 1201 may be a straight line in the vertical direction from the ground. The axis 1201 may be a straight line in the z direction. The center point of the object may be located on the axis 1201. That is, the shaft 1201 may pass through the center of the head of the patient.

The moving unit 1201 may include a first arm 1210 and a second arm 1220.

The first arm 1210 and the second arm 1220 may have a shape extending in a direction parallel to the horizontal portion 1033. The first arm 1210 and the second arm 1220 may be arranged to have a certain included angle. The angle between the first arm 1210 and the second arm 1220 may be 180 degrees. When the X-ray generator 1300 and the X-ray detector 1400 can be positioned so as to have a spatial relationship necessary for photographing, the angle between the first arm 1210 and the second arm 1220 is 180 degrees You do not have to.

The first arm 1210 and the second arm 1220 may be coupled with each other to rotate, or separately rotate. That is, the second arm 1220 can be rotated simultaneously while the first arm 1210 rotates, and the angle at which the first arm 1210 rotates for the same time period is the same as the second arm 1220, May be the same as the angle of rotation. Meanwhile, while the first arm 1210 rotates, the second arm 1220 may not rotate. On the other hand, when the first arm 1210 does not rotate, only the second arm 1220 rotates It is possible. The first arm 1210 and the second arm 1220 may rotate about the axis 1201. The rotation axes of the first arm 1210 and the second arm 1220 may be the same. The same rotation axis may be the axis 1201.

The first arm 1210 may be connected to the X-ray generator 1300. The X-ray generating unit 1300 can be moved by the movement of the first arm 1210. The first arm 1210 rotates about the axis 1201 so that the X-ray generator 1300 is also rotated about the axis 1201.

The second arm 1220 may be connected to the X-ray detector 1400. The X-ray detector 1400 can be moved by the movement of the second arm 1220. The second arm 1220 rotates about the axis 1201 so that the X-ray detector 1400 is also rotated with respect to the axis 1201.

The first arm 1210 and the second arm 1220 have an angle of 180 degrees so that the X-ray generating unit 1300 and the X-ray detecting unit 1400 are also rotated 180 degrees with respect to the axis 1201 You can have an angle. The X-ray generating unit 1300 and the X-ray detecting unit 1400 may rotate about the axis 1201 with an angle of 180 degrees. The X-ray generating unit 1300 and the X-ray detecting unit 1400 can rotate while facing each other.

The X-ray generator 1300 can rotate by drawing an arc. The movement of the X-ray generating unit 1300 in drawing an arc will be described later.

<X-ray Generator >

Next, the structure of the X-ray generation portion will be described.

FIG. 4 is a front view of an X-ray generating part of an embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line A-A 'of the X-ray generating part of FIG.

Referring to FIGS. 4 and 5, the X-ray generator 1300 according to the embodiment of the present invention may include a generator housing 1310 and an X-ray emitting unit 1320.

The X-ray emitting part 1320 may be located inside the generating part housing 1310.

The generator housing 1310 may have a hollow rectangular box shape. Although the shape of the generator housing 1310 has been described in the form of a square box, it is not limited thereto. The X-ray emitting portion 1320 may be housed in the inner space of the generator housing 1310.

The X-ray emitting portion 1320 may emit X-rays. The X-ray emitting portion 1320 may emit X-rays in one direction or X-rays in all directions. The X-ray emitting portion 1320 may emit X-rays through the entire surface of the X-ray emitting portion 1320. For example, when the X-ray emitting portion 1320 has a hexahedral shape, the X-ray emitting portion 1320 may emit X-rays in the normal direction of the hexahedron. The X-ray emitting part 1320 may emit the X-ray toward one surface of the generating part housing 1310. [

The light path restricting portion 1330 may be located on one side of the generator housing 1310. One surface of the generator housing 1310 may be a surface disposed on the optical path between the X-ray emitting portion 1320 and the X-ray detecting portion 1400. The optical path restricting unit 1330 restricts the path of the X-rays emitted from the X-ray emitting unit 1320 and outputs the signal to the outside of the generating unit housing 1310. The optical path restricting unit 1330 may limit the emission path of the X-rays so that X-rays are output only to specific regions.

The optical path restricting unit 1330 limits the X-ray of a large area emitted from the X-ray emitting unit 1320 to an X-ray of a narrow area and outputs the X-ray to the outside of the generating unit housing 1310.

The X-ray emitting unit 1320 may emit X-rays toward one side of the generator housing 1310 in which the optical path restricting unit 1330 is located, and the optical path restricting unit 1330 may limit the X- It is possible to restrict the path of the X-rays irradiated toward the one surface of the housing 1310 and output it to the outside of the generator housing 1310.

The X-ray emitting part 1320 can radiate X-rays in all directions and the light path limiting part 1330 is reflected by the inner surface of the generating part housing 1310, Can be output to the outside of the generator housing 1310.

The light path limiting unit 1330 may include an X-ray discharge port 1331. The X-ray discharge port 1331 may be a hole penetrating the inside and the outside of the generator housing 1310. The area other than the X-ray discharge port 1331 may be an area where the X-ray is not transmitted to the outside of the X-ray generation part 1300. The X-ray discharge port 1331 may provide a path through which X-rays emitted from the X-ray discharge unit 1320 are transmitted to the outside of the generator housing 1310. The X-ray discharge port 1331 may have a rectangular shape. The shape of the X-ray discharge port 1331 is shown in a rectangular shape in the drawing, but is not limited thereto.

The optical path restricting portion 1330 can adjust the position or angle of the X-ray discharge port 1331. The optical path restricting unit 1330 can adjust the discharge path of X-rays transmitted to the outside of the generator housing 1310 by adjusting the position or angle of the X-ray discharge port 1331. [

The optical path restricting unit 1330 can move the X-ray discharge port 1331 in the vertical direction or in the lateral direction. The optical path restricting portion 1330 can move the X-ray discharge port 1331 to an arbitrary position on one side of the generator housing 1310. When the optical path restricting portion 1330 moves the position of the X-ray discharging opening 1331 upward, the X-ray outputted from the X-ray generating portion 1300 is moved upward, The X-ray generator 1300 can be moved downward when the X-ray generator 1330 moves the X-ray discharging port 1331 downward.

The optical path restricting portion 1330 can adjust the angle of the X-ray discharge port 1331 in the vertical direction or in the lateral direction. That is, the region adjacent to the X-ray detecting unit 1400 is moved while the region adjacent to the X-ray emitting unit 1320 is fixed in the X-ray discharging opening 1331, and the X- ) Can be adjusted. When the X-ray discharging port 1331 is tilted upward with respect to the XY plane, the X-ray generating unit 1300 outputs X-rays relatively upward, and the X- The X-ray generator 1300 can output X-rays relatively downward.

Although the optical path restricting unit 1330 constitutes one side of the generator housing 1310 in the drawing, the optical path restricting unit 1330 may be installed on one side of the generator housing 1310 As shown in FIG. When the optical path restricting portion 1330 is attached to one surface of the generator housing 1310, the optical path restricting portion 1330 is formed on one surface of the generator housing 1310, A discharge port having a size larger than the discharge port 1331 is formed and the X-ray discharge port 1331 can be moved in the region of the discharge port to limit the output path of the X-ray.

The X-ray generating unit 1300 can move the X-ray output path in the Z-axis direction through the optical path restricting unit 1330. The X-ray generating unit 1300 may move the X-ray output path to correspond to the position of the X-ray detecting unit 1400.

Alternatively, although not shown, the optical path limiting unit 1330 may move the entire X-ray generating unit 1300 and move the X-ray output path in a state in which X-rays are output through a constant path. That is, instead of the method of selectively moving only the optical path restricting portion 1330, the entire X-ray generating portion 1300 is moved to move the X-ray output path so as to correspond to the position of the X-ray detecting portion 1400 have. In other words, the generator housing 1310 moves and the output path of the X-ray can be moved. In this case, it is possible to further include a linear moving unit that moves the generator housing 1310 separately.

<X-ray The detection unit >

Next, the structure of the X-ray detecting unit will be described.

FIG. 6 is a front view showing an X-ray detecting unit according to an embodiment of the present invention, and FIG. 7 is an enlarged view showing a part of an image sensor according to an embodiment of the present invention.

Referring to FIGS. 6 and 7, the X-ray detector 1400 according to the embodiment of the present invention may be located in the detector housing 1410.

The X-ray detector 1400 may be installed in the detector housing 1410. The X-ray detector 1400 may be installed on one side of the detector housing 1410.

The detection housing 1410 may include a sensor movement region 1420. [ The sensor movement region 1420 may be located on one side of the detection housing 1410. The sensor moving region 1420 may be a region opening a part of one surface of the detecting housing 1410. The sensor movement region 1420 may provide a movement path of the X-ray detection unit 1400.

The sensor moving region 1420 may have an area larger than that of the X-ray detecting unit 1400. The sensor movement region 1420 may extend in the longitudinal direction of the X-ray detection unit 1400.

The X-ray detector 1400 may have a rectangular shape. The X-ray detector 1400 may be formed in a rectangular shape. The X-ray detector 1400 may have a rectangular shape in which the first interface 1401 and the second interface 1402 face each other and the third interface 1403 and the fourth interface 1404 face each other. The first interface 1401 may have the same length as the second interface 1402 and the third interface 1403 may have the same length as the fourth interface 1404. The first interface 1401 may be shorter than the third interface 1403.

The X-ray detector 1400 may have a square shape. The X-ray detector 1400 may be used for computed tomography (CT).

The sensor moving region 1420 may extend in a direction parallel to the third interface 1403. The sensor movement region 1420 may provide a space through which the X-ray detection unit 1400 can move in a direction parallel to the third interface 1403. [

The X-ray detecting unit 1400 can linearly move within the sensor moving region 1420. That is, the X-ray detecting unit 1400 can linearly move in a direction parallel to the third interface 1403 within the aperture region of the sensor moving region 1420.

The movement of the X-ray detecting unit 1400 in the direction of the second interface 1402 can be defined as a first linear motion and the movement of the X-ray detecting unit 1400 in the direction of the first interface 1401 2 linear motion. The X-ray detector 1400 can sequentially perform the reciprocating motion including the first rectilinear motion and the second rectilinear motion under the control of the controller 1100.

For example, the X-ray detection unit 1400 may be located at the first first point, reach the second point through the first linear motion, and then reach the first point through the second linear motion . The first point may be a point near the boundary of the sensor moving region 1420 adjacent to the first interface 1401 and the second point may be a point near the sensor moving region 1420 adjacent to the second interface 1402. [ (1420).

That is, the first linear motion increases the opening area of the sensor moving region 1420 where the first boundary surface 1401 is one side, and at the same time, the sensor moving region (the first boundary surface 1402) 1420 becomes smaller. Further, the second linear motion reduces the opening area of the sensor moving region 1420 where the first interface 1401 is one side, and at the same time, the sensor moving region 1402 having the second interface 1402 as one side, The opening area of the opening 1420 becomes larger.

The X-ray detecting unit 1400 can be moved in the sensor moving region 1420 by a structure such as a rail. The movement structure of the X-ray detector 1400 has been described by taking a rail as an example, but it is not limited thereto.

The X-ray detector 1400 may include a detector body 1405 and a plurality of image sensor tiles 1406 formed on the detector body 1405. The plurality of image sensor tiles 1406 may be disposed on the detector body 1405.

Each image sensor tile 1406 may have a constant spacing. Or each image sensor tile 1406 may be positioned in contact with each other. Each image sensor tile 1406 may include multiple pixels. The plurality of pixels may be arranged in a matrix form.

A light receiving area RA may be defined on the X-ray detecting part 1400. The light receiving region RA may be a region irradiated with X-rays from the X-ray generating portion 1300. The light receiving area RA may be an area including the image sensor tile 1406. [ The light receiving area RA may be an area including all the image sensor tiles 1406. [ The X-ray generating unit 1300 can be controlled such that the light receiving region RA has a boundary between the image sensor tile 1406 and the first to fourth boundary surfaces 1401 to 1404. The light path limiting portion 1330 of the X-ray generating portion 1300 is positioned such that a boundary portion of the light receiving region RA is positioned between the image sensor tile 1406 and the first to fourth boundary surfaces 1401 to 1404 It is possible to prevent the X-rays from being radiated to the outside of the detection body 1405, thereby preventing X-ray exposure. In addition, all the image sensor tiles 1406 can be used for X-ray detection by controlling the light path limiting portion 1330 such that the light receiving region RA includes all the image sensor tiles 1406. [

<X-ray And X-ray The Rotation>

Next, the rotation operation of the X-ray generation unit and the X-ray detection unit will be described.

8 is a top view showing the rotation of the X-ray generation unit and the X-ray detection unit according to the embodiment of the present invention.

Referring to FIG. 8, when the X-ray radiographing apparatus of the embodiment of the present invention is viewed from the Z-axis direction, the object 1 is placed on the axis 1201 so that the center of the object 1 is located. That is, the patient is positioned so that the shaft 1201 is positioned at the center of the head of the patient.

The X-ray generation unit 1300 and the X-ray detection unit 1400 can rotate in a state in which they face each other. The X-ray generating unit 1300 and the X-ray detecting unit 1400 can move in the clockwise direction with respect to the axis 1201. Although the X-ray generating unit 1300 and the X-ray detecting unit 1400 move in the clockwise direction, the X-ray generating unit 1300 and the X-ray detecting unit 1400 move in the counterclockwise direction It is possible.

The X-ray generation unit 1300 and the X-ray detection unit 1400 can move along the movement path when viewed from above. The movement path may be a predetermined path. The movement path can be preset by the user. Further, the movement path may be set by detecting the characteristic of the object.

The X-ray generator 1300 may move along a curved path. The X-ray generator 1300 may move along an oval-shaped movement path.

The X-ray generator 1300 can move while drawing an arc having a certain radius of curvature. That is, the movement path of the X-ray generation part 1300 may be a foil having a radius of curvature within a certain range. The movement path of the X-ray generation unit 1300 may be a circle having a radius of curvature ranging from a first radius R1 to a second radius R2. The X-ray generator 1300 can move while drawing an arc having a certain radius of curvature. At this time, the movement path of the X-ray generation unit 1300 may be a circle. The distance between the axis 1201 and the X-ray generation part 1300 is equal to the radius of curvature when the movement path of the X-ray generation part 1300 is caused.

Alternatively, the X-ray generator 1300 can move while drawing an arc having a varying radius of curvature. The radius of curvature of the X-ray generator 1300 may vary within the range of the first radius R1 to the second radius R2. The ratio of the first radius R1 to the second radius R2 may be 1: 1.01 to 1: 100.

When the circle having the varying radius of curvature is drawn, a plurality of circles can all be located on the same plane (CP).

Although not shown, the X-ray generator 1300 can perform an operation of drawing an ellipse. When the X-ray generation unit 1300 performs a motion to draw an ellipse, the axis 1201 can move in the major axis direction of the ellipse. In this case, the X-ray generator 1300 can perform linear motion in a certain section. Or to converge on a straight line.

<X-ray The Linear motion >

Next, the linear motion of the X-ray detecting unit will be described.

9 is a view showing a linear motion of the X-ray detecting unit according to the embodiment of the present invention.

Referring to FIG. 9, an X-ray detector 1400 according to an embodiment of the present invention may be located in a detector housing 1410.

The X-ray detector 1400 can perform linear motion. As described above, the X-ray generating unit 1300 moves while drawing an arc having a certain radius of curvature. The plurality of circles having the radius of curvature of the predetermined range may each be located on a two-dimensional plane. The plurality of circles having the predetermined radius of curvature may all be located on the same two-dimensional plane. In the drawings, the circle is located on the XY plane, but a plurality of circles may be located on a plane other than the XY plane.

The X-ray detecting unit 1400 can linearly move in a linear direction having a certain angle (a) with respect to a plane (CP) on which at least one circle among a plurality of circles having a certain radius of curvature is located. The X-ray detecting unit 1400 can linearly move along a coaxial line 1409. The straight line of the X-ray detecting unit 1400 may have an angle between the coaxial axis 1409 and the plane CP where the circle is located at a certain angle (a).

In this case, the X-ray detecting unit 1400 may detect the X-ray detecting unit 1400 having a certain angle (a) with respect to a plane in which a plurality of circles having a certain radius of curvature are located, It is possible to linearly move in a linear direction.

The angle a between the plane CP on which the circle is located and the linear movement axis 1409 of the X-ray detection unit 1400 may be 60 degrees to 120 degrees. Preferably, the angle (a) may be between 80 degrees and 100 degrees. More preferably, the angle a may be 90 degrees.

The angle a may be determined according to the position of the plane CP on which the circle is located. The angle a may be determined according to the position on the Z axis of the plane CP on which the circle is located. The angle a may be determined according to the distance between the plane CP on which the circle is located and the center of the X-ray detection unit 1400 before the linear motion. When the distance between the plane CP on which the circle is located and the center point Z of the X-ray detecting unit 1400 before linear motion is large, the angle a can be moved away from 90 degrees. That is, in this case, the angle a can be reduced. When the distance between the plane CP on which the circle is located and the Z-direction center point of the X-ray detecting unit 1400 before linear motion is small, the angle a can be close to 90 degrees. That is, in this case, the angle a can be large.

The straight line coaxial axis 1409 may be parallel to the axis 1201.

The straight line coaxial axis 1409 may be set to be perpendicular to the angle at which the X-ray is irradiated from the X-ray generation unit 1300.

The straight line coaxial axis 1409 may be parallel to at least a part of the X-ray light receiving surface of the X-ray detecting unit 1400. The X-ray receiving surface may be a surface irradiated with X-rays from the X-ray generating section 1300.

The X-ray detecting unit 1400 can linearly move in a direction perpendicular to the X-ray emitted from the X-ray generating unit 1300 by moving a straight line parallel to the X-ray receiving surface along the coaxial axis 1409. That is, at least a part of the region of the X-ray detecting portion 1400 can be linearly moved in a direction perpendicular to the X-ray irradiated from the X-ray generating portion 1300.

By setting the straight line so that the coaxial axis 1409 is parallel to at least a part of the X-ray light receiving surface of the X-ray detecting section 1400, at least a part of the X-ray detecting section 1400 can be irradiated with the X- Therefore, the energy loss during the process of receiving the X-ray can be reduced, and consequently, the image quality of the frame generated by the X-ray detecting unit 1400 can be improved.

&Lt; Operation of X-ray photographing machine in the embodiment >

- How to operate the X-ray machine -

10 is a flowchart showing an operation method of the X-ray photographing apparatus according to the embodiment of the present invention.

Referring to FIG. 10, an X-ray photographing apparatus 1000 according to an embodiment of the present invention includes a step S110 of photographing a target object, a step S120 of generating a frame, and a step S130 of generating a panoramic image .

The details of each step are as follows.

- Object Shooting -

11 is a view showing a movement path of the X-ray detecting unit according to the embodiment of the present invention.

Referring to FIG. 11, the X-ray detector 1400 according to the embodiment of the present invention can move on the detector housing 1410.

In the drawing, the detector housing 1410 is integrally displayed, but the detector housing 1410 is continuously moved with time. Also, although six X-ray detecting units 1400 are shown in the drawing, the X-ray detecting units 1400 are continuously moved at a specific point in time.

The X-ray detector 1400 starts to move at the first time point t1 and ends at the eighth time point t8. The X-ray detector 1400 may move along the movement path during the first time point t1 to the eighth time point t8. The X-ray detector 1400 can move along the movement path under the control of the controller 1100.

The X-ray generator 1300 may emit X-rays during the movement time of the X-ray detector 1400. The X-ray generator 1300 may move along the movement path during an exposure period in which the X-ray generator 1300 emits X-rays.

The exposure period may be the same as the movement time of the X-ray detector 1400. That is, the exposure period may start at the first time point t1 and end at the eighth time point t8. In other words, when the X-ray generation unit 1300 emits light and the X-ray detection unit 1400 starts to move, and the X-ray generation unit 1300 finishes the light emission, The mobile station 1400 can terminate the movement.

The exposure period may include a moving time of the X-ray detector 1400. [ That is, the exposure period may start before the first time point t1 and end after the eighth time point t8. In other words, after the X-ray generation unit 1300 emits light, the X-ray detection unit 1400 starts to move, and after the movement of the X-ray detection unit 1400 ends, the X-ray generation unit 1300 can terminate the light emission.

The exposure period may be included in the movement time of the X-ray detector 1400. That is, the exposure period may start at a time later than the first time point t1 and end before the eighth time point t8. In other words, after the X-ray detecting unit 1400 starts to move, the X-ray generating unit 1300 emits light, and after the X-ray generating unit 1300 finishes emitting light, the X- 1400) may be terminated.

The exposure period may start before the first point of time t1 and may end before the eighth point of time t8. The exposure period may start later than the first point of time t1, May be terminated earlier.

The movement of the X-ray detecting unit 1400 will be described again. The X-ray detector 1400 performs a linear motion during the period from the second time point t2 to the seventh time point t7 while maintaining the motion of drawing the call. The first difference between the first point of time t1 and the eighth point of time t8 when the X-ray detection unit 1400 performs the motion of drawing the call is determined by the second point of time t2 ) And the seventh time point (t7).

Or the first difference may be the same as the second difference. When the first difference and the second difference are equal to each other, the X-ray detector 1400 can start the motion of drawing a call and start the linear motion. In addition, at the same time when the motion of drawing the arc is terminated, the linear motion can also be terminated.

The motion of drawing the arc of the X-ray detector 1400 may have a constant velocity. Or the motion of drawing the arc of the X-ray detector 1400 may have a different velocity for each section.

The X-ray detector 1400 starts to move at the first time point t1. During the first time point (t1) to the second time point (t2), the X-ray detecting unit 1400 performs a motion to draw a call on the axis 1201 in FIG. That is, the X-ray detecting unit 1400 moves on the XY plane while maintaining a constant position with respect to the Z-axis direction. That is, the X-ray detector 1400 can move in a direction parallel to the ground between the first point of time t1 and the second point of time t2. The X-ray detector 1400 may be located at the first point within the detector housing 1410 between the first point of time t1 and the second point of time t2.

The X-ray detector 1400 starts the first linear motion while maintaining the motion of drawing the arc at the second time point t2. The first linear motion may be a movement in the Z-axis direction. The first linear motion may be a movement in the Z-axis direction toward the ground. The X-ray detecting unit 1400 can be lowered in the direction of the paper surface by the first linear motion. The linear motion of the X-ray detector 1400 may start at the second time point t2 and may end at the fourth time point t4. The X-ray detecting unit 1400 may move along a curve of a curved line by combining a motion of drawing an arc and a first linear motion. The X-ray detecting unit 1400 detects movement of the curved line when viewed from the outside by the movement of drawing the call caused by the moving unit 1200 and the linear movement of the X-ray detecting unit 1400 in the detecting unit housing 1410. [ As shown in FIG. The X-ray detector 1400 is positioned at a first point in the detector housing 1410 at the second point in time t2 and the X-ray detector 1400 is positioned at the fourth point of time t4 by the first linear motion. May be located at a second point in the detector housing 1410.

During the second time point t2 to the fourth time point t4, the X-ray detecting unit 1400 can perform the first linear motion at the same speed. When the X-ray detecting unit 1400 performs the first linear motion at the same speed for the second time point t2 to the fourth time point t4, the X-ray detecting unit 1400 detects the X- It is possible to move along the movement path of the straight line.

Alternatively, the X-ray detector 1400 may move at a speed of the first linear motion during the second time point t2 and the fourth time point t4.

For example, the amount of change of the velocity of the first linear motion may change at a third point of time t3 between the second point of time t2 and the fourth point of time t4. The speed of the first linear motion may gradually increase between the second time point t2 and the third time point t3. The speed of the first linear motion gradually increases between the second time point t2 and the third time point t3 so that the X-ray detecting unit 1400 is rotated from the second time point t2 to the third time point t3 It is possible to move along the movement path that draws a curve in which the absolute value of the tilt becomes larger.

The speed of the first linear motion may gradually decrease between the third time point t3 and the fourth time point t4. The speed of the first linear motion gradually decreases between the third time point t3 and the fourth time point t4 so that the X-ray detecting unit 1400 is rotated from the third time point t3 to the fourth time point t4 The absolute value of the tilt can be moved along the movement path that draws a curve that becomes smaller.

The X-ray detecting unit 1400 ends the first linear motion at the fourth time point t4 and the X-ray detecting unit 1400 detects the X-ray detecting unit 1400 between the fourth time point t4 and the fifth time point t5, 1201). &Lt; / RTI > That is, the X-ray detecting unit 1400 moves on the XY plane while maintaining a constant position with respect to the Z-axis direction. That is, the X-ray detector 1400 can move in a direction parallel to the ground between the fourth time point t4 and the fifth time point t5. The X-ray detector 1400 may be located at the second point in the detector housing 1410 between the fourth point of time t4 and the fifth point of time t5.

The X-ray detecting unit 1400 starts the second linear motion while maintaining the motion of drawing the arc at the fifth time point t5. The second linear motion may be a movement in the Z-axis direction. The second linear motion may be a movement in the Z-axis direction in a direction opposite to the paper surface. The X-ray detecting unit 1400 can be raised in a direction away from the ground by the second linear motion. The linear motion of the X-ray detector 1400 may start at the fifth point of time t5 and end at the seventh point of time t7. The X-ray detecting unit 1400 can move along a curved path of motion by combining a motion of drawing an arc and a second linear motion. The X-ray detecting unit 1400 detects a movement of the curved line when viewed from the outside by the movement of drawing the call caused by the moving unit 1200 and the linear movement of the X-ray detecting unit 1400 in the detecting unit housing 1410. [ As shown in FIG. The X-ray detector 1400 is located at a second point in the detector housing 1410 at the fifth point in time t5 and the X-ray detector 1400 is positioned at the seventh point in time t7 by the second linear motion. May be located at a first point in the detector housing 1410. [

The first linear motion and the second linear motion may constitute linear motion of the X-ray detector 1400. That is, the linear motion may be a linear reciprocating motion.

The X-ray detecting unit 1400 may perform the second linear motion at the same speed during the fifth time point t5 to the seventh time point t7. When the X-ray detecting unit 1400 performs the second linear motion at the same speed for the fifth time point t5 to the seventh time point t7, the X-ray detecting unit 1400 detects the X- It is possible to move along the movement path of the straight line.

Alternatively, the X-ray detector 1400 may move at a speed of the second linear motion during the fifth time point t5 and the seventh time point t7.

For example, the amount of change in the velocity of the second linear motion may change at a sixth point in time t6 between the fifth point in time t5 and the seventh point in time t7. The speed of the second linear motion may gradually increase between the fifth time point t5 and the sixth time point t6. The speed of the first linear motion gradually increases between the fifth point of time t5 and the sixth point of time and the X-ray detector 1400 detects the inclination of the tilt angle from the fifth point of time t5 to the sixth point of time t6, Can be moved along a movement path that draws a curve in which the absolute value of the absolute value of the absolute value is large.

The speed of the second linear motion may gradually decrease between the sixth time point t6 and the seventh time point t7. The velocity of the second linear motion gradually decreases between the sixth point of time t6 and the seventh point of time t7 so that the X-ray detector 1400 moves from the sixth point of time t6 to the seventh point of time t7 The absolute value of the tilt can be moved along the movement path that draws a curve that becomes smaller.

The X-ray detecting unit 1400 ends the second linear motion at the seventh point in time t7 and between the seventh point in time t7 and the eighth point in time t8, the X- 1201). &Lt; / RTI > That is, the X-ray detecting unit 1400 moves on the XY plane while maintaining a constant position with respect to the Z-axis direction. That is, the X-ray detector 1400 can move in a direction parallel to the ground between the seventh point of time t7 and the eighth point of time t8. The X-ray detector 1400 may be located at the first point in the detector housing 1410 between the seventh point of time t7 and the eighth point of time t8. At the eighth time point t8, the X-ray detector 1400 ends the movement.

The movement path of the X-ray detector 1400 can be defined in advance. Or the movement path of the X-ray detector 1400 may be determined according to the shape of the object. That is, the movement path of the detector 1400 may be determined by sensing the shape of the object.

The X-ray generating unit 1300 can move the X-ray output path to correspond to the movement of the X-ray detecting unit 1400. The X-ray generating unit 1300 can move the X-ray output path by controlling the optical path restricting unit 1330 as shown in FIG. 4 and FIG. Alternatively, although not shown, the optical path restricting unit 1330 may move the entire X-ray generating unit 1300 and move the X-ray output path in a state in which X-rays are output through a constant path.

The X-ray generating unit 1300 and the X-ray detecting unit 1400 perform a motion of drawing a call while maintaining the state of being opposed by the moving unit 1200, and the X- Since the linear motion is performed in the drawing process, when looking at the X-ray detecting unit 1400 from the viewpoint of the X-ray generating unit 1300, only the linear motion can be detected. That is, the X-ray detector 1400 performs a linear motion with respect to the X-ray generator 1300. In other words, the X-ray detector 1400 detects the first linear motion between the second point of time t2 and the fourth point of time t4 and the point of time of the fifth point of time t5 with respect to the X- And performs a second linear motion between the seventh time point t7. The X-ray detecting unit 1400 performs relative positional movement in the Z-axis direction with respect to the X-ray generating unit 1300.

Accordingly, the X-ray generation unit 1300 also moves the X-ray output path in the Z-axis direction so that the X-ray generation unit 1300 can adjust the X-ray output path to correspond to the movement of the X- have.

- Frame generation -

12 is a diagram showing a plurality of frames generated according to an embodiment of the present invention.

Referring to FIG. 12, an X-ray detector 1400 according to an embodiment of the present invention generates a plurality of frames during an exposure period. In the figure, a plurality of frames generated when a target object corresponding to the movement path of the X-ray detection unit 1400 is captured will be described as an example.

The X-ray detector 1400 generates the frame 1500 at a speed of 15 fps to 500 fps.

Each frame 1500 can be generated by detecting X-rays irradiated to the X-ray detecting section 1400 at each time point. Each frame may be generated to have an overlapping area with an adjacent frame.

The speed of the frame 1500 may be proportional to the speed of the X-ray detector 1400. The X-ray detector 1400 generates the frame 1500 at a relatively high speed when the X-ray detector 1400 is fast, and the X-ray detector 1400 generates the frame 1500 when the X- May generate the frame 1500 at a relatively low speed.

The number of the frames 1500 generated during the exposure period due to the speed of the frame 1500 being proportional to the speed of the X-ray detecting unit 1400 may be constant regardless of the moving speed of the X-ray detecting unit 1400. The overlapping area of the adjacent frames 1500 may also be constant regardless of the moving speed of the X-ray detecting unit 1400. [

The speed of the frame 1500 may not depend on the speed of the X-ray detector 1400. However, the speed of the frame 1500 should be set so that the frame 1500 can have an overlap area.

Further, the area of the overlapping area of the adjacent frames 1500 may be different. That is, the X-ray detecting unit 1400 may be moved such that the overlapping area of the adjacent frames 1500 is not constant. For example, when X-rays transmitted through the central region of the object are detected, the plurality of frames 1500 generated by the X-ray detecting unit 1400 may have a relatively large overlapping area. In addition, the area of the overlapping area of the plurality of frames 1500 generated by the X-ray detector 1400 can be reduced as the distance from the central area of the target object increases.

The resolution of the frame 1500 may correspond to the resolution of the X-ray detector 1400. The resolution of the frame 1500 may be the same as the resolution of the X-ray detector 1400. The frame 1500 may have a shape corresponding to the shape of the X-ray detector 1400. Since the X-ray detector 1400 has a rectangular shape, the frame 1500 may have a rectangular shape.

In the drawing, since the object is the same as the movement path of the X-ray detecting unit 1400, each frame 1500 may include a linear band shape in the central region. That is, from the viewpoint of the X-ray detecting section 1400, since a strip shape having the same height is detected, a plurality of frames 1500 having a linear strip shape in the central region are generated.

- Creation of panoramic image -

13 is a view showing a panoramic image generated by an X-ray photographing apparatus according to an embodiment of the present invention.

Referring to FIG. 13, an X-ray photographing apparatus 1000 according to an embodiment of the present invention generates a panoramic image 1600 using a plurality of frames 1500 generated by the X-ray detecting unit 1400. The panoramic image 1600 may be generated in the controller 1100 of the X-ray photographing apparatus 1000. Alternatively, the electronic device 2000 may receive the plurality of frames 1500 generated by the X-ray detecting unit 1400 and generate a panoramic image 1600 in the processor 2100 of the electronic device 2000. Hereinafter, the controller 1100 of the X-ray radiographing apparatus 1000 generates the panorama image 1600 as an example.

The controller 1100 may generate the panorama image 1600 by superimposing the plurality of frames 1500.

The panoramic image 1600 may be a rectangular image. The panoramic image 1600 may be a rectangular image defined by a first boundary line 1610, a second boundary line 1620, a third boundary line 1630, and a fourth boundary line 1640. The first boundary line 1610 and the second boundary line 1620 may be straight lines facing each other and the third boundary line 1630 and the fourth boundary line 1640 may be straight lines facing each other.

The panoramic image 1600 may have a first width d1. The first width d 1 may be a length corresponding to the length of the third boundary line 1630. The first width d1 may be a length corresponding to the length of the fourth boundary line 1640. The frame 1500 may have a second width d2. The second width d2 may be the width of the frame 1500 parallel to the third border 1630 of the panoramic image 1600. [ The second width d2 may have a smaller value than the first width d1. That is, the width of the panoramic image 1600 may be greater than the width of the frame 1500.

The panoramic image 1600 may include a dummy area 1650. The dummy area 1650 may be an area where the plurality of frames 1500 are not disposed. The second width d2 of the frame 1500 is smaller than the first width d1 of the panoramic image 1600 so that the frame 1500 can not be arranged in a part of the panoramic image 1600. [ Therefore, the photographed image may not be displayed in the dummy area 1650. In the dummy area 1650, images of the same gradation level can be displayed. A black image may be displayed in the dummy area 1650. Alternatively, a white image may be displayed in the dummy area 1650.

The controller 1100 may superpose the plurality of frames 1500 along the reference line 1. [ The reference line 1 may be a reference for overlapping a plurality of frames 1500 generated between the first time point t1 and the eighth time point t8 of FIG. 11 described above. The reference line may be a reference for superimposing at least one frame generated between specific time points.

The reference line 1 may have a shape corresponding to the movement path of the X-ray detector 1400. The plurality of frames 1500 are superimposed on the reference line 1 having a shape corresponding to the movement path of the X-ray detecting unit 1400, so that the X-ray detecting unit 1400 moves The panorama image 1600 can be generated. The reference line 1 may be a virtual line. The reference line 1 may be a predefined line. The reference line 1 may be a predefined line according to the movement path of the X-ray detector 1400. Alternatively, the reference line 1 may be a line determined according to the shape of the object. That is, the reference line 1 may be determined by sensing the shape of the object.

The reference line 1 may include a left reference line region PL and a right reference line region PR based on a center region PM of the panoramic image 1600. [ The left reference line region PL may have a shape symmetrical with the right reference line region PR.

The reference line 1 may include a plurality of reference line regions. The baseline region may be a region obtained by dividing a baseline according to a region.

The baseline region between the first time point t1 and the second time point t2 may be a straight line. The reference line region between the first time point t1 and the second time point t2 may be parallel to the lowermost limit line r of the frame 1500. That is, the reference line region between the first point of time t1 and the second point of time t2 may have an angle of 0 degree with respect to the lowermost border line r of the frame 1500. The reference line region between the first time point t1 and the second time point t2 may be perpendicular to the side boundary line of the frame 1500. [

A plurality of frames 1500 generated between the first time point t1 and the second time point t2 may be arranged to meet with the first boundary line 1610. [ That is, the uppermost boundary of the plurality of frames 1500 generated between the first time point t1 and the second time point t2 may be arranged so as to meet with the first boundary line 1610 of the panorama image 1600 . The top edges of the plurality of frames 1500 are arranged to meet the first boundary line 1610 of the panoramic image 1600 so that the lower part of the panoramic image 1600 having a width smaller than that of the panoramic image 1600 A dummy area 1650 is created. The dummy region 1650 may be positioned between the lower portion of the frame 1500 and the second boundary line 1620.

The baseline region between the second time point t2 and the fourth time point t4 may be a curve. The reference line region between the second time point t2 and the fourth time point t4 may have a plurality of angles with respect to the lowermost limit line r of the frame 1500. That is, the reference line region between the second time point t2 and the fourth time point t4 may have an angle varying with the time point.

At the third point of time t3 between the second point of time t2 and the fourth point of time t4, the amount of change of the absolute value of the angle of the reference line region may change with reference to the bottom line r. That is, the change amount of the absolute value of the angle from the second time point t2 to the third time point t3 has a positive value, and from the third time point t3 to the fourth time point t4, The amount of change in the value may have a negative value. The absolute value of the angle of the reference line area increases from the second time point t2 to the third time point t3 and the absolute value of the angle of the reference line area from the third time point t3 to the fourth time point t4 increases. The value can be reduced.

The plurality of frames 1500 generated between the second time point t2 and the fourth time point t4 may be arranged so as not to be in contact with the first boundary line 1610 and the second boundary line 1620. [ A dummy region 1650 is formed between the first boundary line 1610 and the upper portion of the frame 1500 between the second time point t2 and the fourth time point t4, A dummy area 1650 can be created between the bottom of the frame 1500.

The baseline region between the fourth time point t4 and the fifth time point t5 may be a straight line. The reference line region between the fourth time point t4 and the fifth time point t5 may be parallel to the lowermost limit line r of the frame 1500. That is, the reference line region between the fourth time point t4 and the fifth time point t5 may have an angle of 0 degree with respect to the lowermost limit line r of the frame 1500. The reference line region between the fourth time point t4 and the fifth time point t5 may be perpendicular to the side border line of the frame 1500. [ The reference line area between the fourth time point t4 and the fifth time point t5 may be parallel to the reference line area between the first time point t1 and the second time point t2.

The plurality of frames 1500 generated between the fourth time point t4 and the fifth time point t5 may be arranged to meet the second border line 1620. [ That is, the lowermost boundary of the plurality of frames 1500 generated between the fourth time point t4 and the fifth time point t5 may be arranged to meet with the second boundary line 1620 of the panorama image 1600 . The bottom edge of the plurality of frames 1500 is arranged to meet with the second boundary line 1620 of the panoramic image 1600 so that the upper part of the panoramic image 1600 having a width smaller than that of the panoramic image 1600 A dummy area 1650 is created. The dummy region 1650 may be located between the top of the frame 1500 and the first boundary 1610. The plurality of frames 1500 generated between the fourth time point t4 and the fifth time point t5 may be frames generated by capturing the lowermost end of the object.

The baseline region between the fifth time point t5 and the seventh time point t7 may be a curve. The reference line region between the fifth time point t5 and the seventh time point t7 may have a plurality of angles with respect to the lowermost limit line r of the frame 1500. That is, the reference line area between the fifth point of time t5 and the seventh point of time t7 may have an angle varying with the point of time.

At the sixth point of time t6 between the fifth point of time t5 and the seventh point of time t7, the amount of change of the absolute value of the angle of the reference line region may change with reference to the bottom line r. That is, the change amount of the absolute value of the angle from the fifth time point t5 to the sixth time point t6 has a positive value, and the absolute value of the angle from the sixth time point t6 to the seventh time point t7 The amount of change in the value may have a negative value. The absolute value of the angle of the reference line area increases from the fifth time point t5 to the sixth time point t6 and the absolute value of the angle of the reference line area from the sixth time point t6 to the seventh time point t7 increases. The value can be reduced.

A plurality of frames 1500 generated between the fifth time point t5 and the seventh time point t7 may be arranged so as not to be in contact with the first border line 1610 and the second boundary line 1620. [ A dummy region 1650 is formed between the first boundary line 1610 and the upper portion of the frame 1500 between the fifth time point t5 and the seventh time point t7, A dummy area 1650 can be created between the bottom of the frame 1500.

The reference line region and the dummy region 1650 between the fifth point of time t5 and the seventh point of time t7 are divided into the reference line region and the dummy region 1650 between the second point of time t2 and the fourth point of time t4, Can be symmetrical. The reference line region and the dummy region 1650 between the fifth point of time t5 and the seventh point of time t7 are divided into the reference line region and the dummy region 1650 between the second point of time t2 and the fourth point of time t4, And may be laterally symmetrical with respect to the center area PM. The absolute value of the angle of the reference line area between the fifth time point t5 and the seventh time point 7 is equal to the absolute value of the angle of the reference line area between the second time point t2 and the fourth time point t4 .

The baseline region between the seventh time point t7 and the eighth time point t8 may be a straight line. The reference line region between the seventh time point t7 and the eighth time point t8 may be parallel to the lowermost limit line r of the frame 1500. That is, the reference line region between the seventh time point t7 and the eighth time point t8 may have an angle of 0 degree with respect to the lowermost limit line r of the frame 1500. The reference line region between the seventh time point t7 and the eighth time point t8 may be perpendicular to the side border line of the frame 1500. [ The reference line area between the seventh point of time t7 and the eighth point of time t8 may be parallel to the reference line area between the first point of time t1 and the second point of time t2. The reference line area between the seventh point of time t7 and the eighth point of time t8 may be parallel to the reference line area between the fourth point of time t4 and the fifth point of time t5.

A plurality of frames 1500 generated between the seventh time point t7 and the eighth time point t8 may be arranged to meet with the first boundary line 1610. [ That is, the top edges of the plurality of frames 1500 generated between the seventh point of time t7 and the eighth point of time t8 may be arranged to meet with the first boundary 1610 of the panoramic image 1600 . The top edges of the plurality of frames 1500 are arranged to meet the first boundary line 1610 of the panoramic image 1600 so that the lower part of the panoramic image 1600 having a width smaller than that of the panoramic image 1600 A dummy area 1650 is created. The dummy region 1650 may be positioned between the lower portion of the frame 1500 and the second boundary line 1620.

The reference line region and the dummy region 1650 between the seventh point of time t7 and the eighth point of time t8 are defined by the reference line region and the dummy region 1650 between the first point of time t1 and the second point of time t2, Can be symmetrical. The reference line region and the dummy region 1650 between the seventh point of time t7 and the eighth point of time t8 are defined by the reference line region and the dummy region 1650 between the first point of time t1 and the second point of time t2, And may be laterally symmetrical with respect to the center area PM.

The panoramic image 1600 may have a dummy area 1650 and a reference line area symmetrical with respect to the center area PM.

- Nested frames -

Fig. 14 is an enlarged view of area A in Fig. 13, and Fig. 15 is an enlarged view of area B in Fig.

Referring to FIG. 14 together with FIG. 13, the X-ray detecting unit 1400 generates a first frame 1510 at a ninth time point t9 and a second frame 1520 at a tenth time point t10 can do.

The ninth time point t9 and the tenth time point t10 may be any time point between the first time point t1 and the second time point t2. The ninth time point t9 and the tenth time point t10 may be adjacent time points. That is, the first frame 1510 and the second frame 1520 may be adjacent frames. However, if the first frame 1510 and the second frame 1520 are overlapped, the ninth time point t9 and the tenth time point t10 may be distant from the adjacent time points.

The first frame 1510 and the second frame 1520 may include a plurality of pixels. The first frame 1510 and the second frame 1520 may overlap each other to have a first overlapping area 1530. The first overlap region 1530 may include a plurality of pixel columns. The first frame 1510 and the second frame 1520 may be overlapped with respect to the first reference line 11. The first reference line 11 may be parallel to the lowermost end of the first frame 1510.

The first frame 1510 and the second frame 1520 of the first overlapping area 1530 may be regions where X-rays transmitted through the same area of the object are detected and generated. That is, the first overlapping area 1530 may be an area in which the same area of the target object is imaged. The pixels of the first overlap region 1530 may have corresponding values. If the state of the X-ray detecting unit 1400 at the time of generating the first frame 1510 and the state of the X-ray detecting unit 1400 at the time of generating the second frame 1520 are the same, 1510 and the first overlap region 1530 of the second frame 1520 may have the same pixel value.

The first frame 1510 may have a first center point P1 and the second frame 1520 may have a second center point P2. The first center point P 1 may be the center of gravity of the first frame 1510. The second center point P2 may be the center of gravity of the second frame 1520. [ The first center point P1 and the second center point P2 may be virtual points.

The first frame 1510 and the second frame 1520 may be disposed such that the first center point P1 and the second center point P2 are located on the first reference line 11. That is, the first reference line 11 may be a line connecting the first center point P1 and the second center point P2.

The first frame 1510 may include a plurality of pixel columns. The first frame 1510 may include an outermost pixel column 1511. The outermost pixel column 1511 may be a pixel column located at the outermost portion of the first frame 1510 adjacent to the second frame 1520. The outermost pixel column 1511 may be a pixel column included in the first overlap region 1530.

The second frame 1520 may include a corresponding pixel column 1521 corresponding to the outermost pixel column 1511 of the first frame 1510. The outermost pixel column 1511 of the first frame 1510 and the corresponding pixel column 1521 of the second frame 1520 may be included in the first overlap region 1530. The outermost pixel column 1511 and the corresponding pixel column 1521 may overlap when the first frame 1510 and the second frame 1520 are overlapped.

The outermost pixel column 1511 and the corresponding pixel column 1521 may be regions generated by detecting X-rays transmitted through the same region of the object. That is, the outermost pixel column 1511 and the corresponding pixel column 1521 may be regions that capture the same area of the target object. The pixels of the outermost pixel column 1511 and the pixels of the corresponding pixel column 1521 may have corresponding values. If the state of the X-ray detecting unit 1400 at the time of generating the first frame 1510 and the state of the X-ray detecting unit 1400 at the time of generating the second frame 1520 are the same, The column 1511 and the corresponding pixel column 1521 may have the same pixel value.

It is assumed that the ninth time point t9 and the tenth time point t10 are the time points between the first time point t1 and the second time point t2. The time point t10 may be a time point between the fourth time point t4 and the fifth time point t5 or a time point between the seventh time point t7 and the eighth time point t8.

Referring to FIG. 15 together with FIG. 13, the X-ray detecting unit 1400 generates a third frame 1540 at an eleventh time point t11, generates a fourth frame 1550 at a twelfth point of time t12 can do.

The eleventh time point t11 and the twelfth time point t12 may be an arbitrary time point between the second time point t2 and the fourth time point t4. The eleventh time point t11 and the twelfth time point t12 may be adjacent to each other. That is, the third frame 1540 and the fourth frame 1550 may be adjacent frames. However, if the third frame 1540 and the fourth frame 1550 are overlapped, the eleventh time point t11 and the twelfth time point t12 may be distant from the adjacent time points.

The third frame 1540 and the fourth frame 1550 may include a plurality of pixels. The third frame 1540 and the fourth frame 1550 may overlap each other and have a second overlapping area 1560. The second overlap region 1560 may include a plurality of pixel columns. The third frame 1540 and the fourth frame 1550 may be overlapped with each other with reference to the second reference line 12. The second reference line 12 may have an angle with respect to the lowermost end of the third frame 1540. The second reference line 12 may not be parallel with respect to the lowermost end of the third frame 1540.

The third frame 1540 and the fourth frame 1550 of the second overlapping area 1560 may be areas where X-rays transmitted through the same area of the object are detected and generated. That is, the second overlapping area 1560 may be a region that imaged the same area of the object. The pixels of the second overlapping region 1560 may have corresponding values. If the state of the X-ray detecting unit 1400 when generating the third frame 1540 and the state of the X-ray detecting unit 1400 when generating the fourth frame 1550 are the same, 1540 and the second overlapping region 1560 of the fourth frame 1550 may have the same pixel value. The second overlap region 1560 may have a smaller width and width than the third frame 1540. The second overlap region 1560 may have a smaller width and width than the fourth frame 1550.

The third frame 1540 may have a third center point P3 and the fourth frame 1550 may have a fourth center point P4. The third center point P3 may be the center of gravity of the third frame 1540. The fourth center point P4 may be the center of gravity of the fourth frame 1550. [ The third center point P3 and the fourth center point P4 may be virtual points.

The third frame 1540 and the fourth frame 1550 may be disposed such that the third center point P3 and the fourth center point P4 may be positioned on the second reference line 12. That is, the second reference line 12 may be a line connecting the third center point P3 and the fourth center point P4.

The third frame 1540 may include a plurality of pixel columns. The third frame 1540 may include an outermost pixel column 1541. The outermost pixel column 1541 may be a pixel column located at the outermost portion of the third frame 1540 adjacent to the fourth frame 1550.

The outermost pixel column 1541 may include a first pixel group 1543 and a second pixel group 1545. The first pixel group 1543 constitutes a part of the outermost pixel column 1541 and the second pixel group 1545 constitutes a part of the outermost pixel column 1541.

The first pixel group 1543 may include at least one pixel. The second pixel group 1543 may include at least one pixel. The first pixel group 1543 may be defined as a pixel not included in the second overlapping area 1560. The second pixel group 1545 may be defined as a pixel included in the second overlap region 1560. The second pixel group 1545 may be located below the first pixel group 1543.

The fourth frame 1550 may include a pixel corresponding to at least one pixel of the second pixel group 1545 of the third frame 1540. The fourth frame 1550 may include a corresponding pixel group 1553 corresponding to a plurality of pixels of the second pixel group 1545 of the third frame 1540. The corresponding pixel group 1553 is included in the corresponding pixel column 1551 and the corresponding pixel column 1551 includes the corresponding pixel group 1553 and the non-corresponding pixel group 1555. The non-corresponding pixel group 1555 does not correspond to the pixel column of the third frame 1540. The non-corresponding pixel group 1555 may be located below the corresponding pixel group 1553. [

The second pixel group 1545 and the corresponding pixel group 1553 of the third frame 1540 may be included in the second overlap region 1560. [ The second pixel group 1545 and the corresponding pixel group 1553 may overlap when the third frame 1540 and the fourth frame 1550 are overlapped.

The second pixel group 1545 and the corresponding pixel group 1553 may be regions generated by detecting X-rays transmitted through the same region of the object. That is, the second pixel group 1545 and the corresponding pixel group 1553 may be regions that capture the same area of the object. The pixels of the second pixel group 1545 and the pixels of the corresponding pixel group 1553 may have corresponding values. If the state of the X-ray detecting unit 1400 when generating the third frame 1540 and the state of the X-ray detecting unit 1400 when generating the fourth frame 1550 are the same, The group 1545 and the corresponding pixel group 1553 may have the same pixel value.

The third frame 1540 may be overlapped with the second reference line 12 without being aligned in the Z axis direction by having the second reference line 12 at a certain angle not parallel to the lowermost boundary of the third frame 1540. That is, the uppermost border line of the third frame 1540 and the uppermost border line of the fourth frame 1550 are not formed by the same line, but are superimposed in the Z axis direction. Accordingly, the fourth frame 1550 includes pixels corresponding to at least one pixel of the second pixel group 1545, and does not include pixels corresponding to the first pixel group 1543.

It is assumed that the eleventh and twelfth time points t11 and t12 are the time points between the second time point t2 and the fourth time point t4. (t12) may be the time between the fifth time point t5 and the seventh time point t7. In this case, it may be located above the first pixel group of the second pixel group. That is, the third frame 1540 may be shifted downward in the Z-axis direction of the fourth frame 1550 and overlapped.

- Actual panoramic image generated -

16 is a view showing an actual panoramic image generated using an X-ray photographing apparatus according to an embodiment of the present invention.

Referring to FIG. 16 together with FIGS. 13 through 15, an X-ray photographing apparatus 1000 according to an embodiment of the present invention generates a panoramic image 1600.

The panoramic image 1600 may be generated by superimposing a plurality of frames 1500. The panorama image 1600 may be configured by superposing a plurality of frames 1500 from the first time point t1 to the eighth time point t8. The panoramic image may be constructed by arranging a plurality of frames 1500 in a superimposed manner along a reference line (l).

The reference line 1 may be formed by connecting a plurality of reference lines. The reference line 1 may include a first reference line 11 and a second reference line 12. The reference line 1 may be a virtual line connecting the plurality of frames 1500. The reference line 1 may be a line connecting the center points of the plurality of frames 1500. The center point may be the center of gravity of the frame 1500.

The first reference line 11 may be a line connecting the first frame 1510 of the ninth time point t9 and the second frame 1520 of the tenth view point. The first frame 1510 may include a first center point P1 and the second frame 1520 may include a second center point P2. The first reference line 11 may be a line connecting the first center point P1 and the second center point P2. The first frame 1510 and the second frame 1520 may be adjacent frames.

The second reference line 12 may be a line connecting the third frame 1540 of the eleventh viewpoint t11 and the fourth frame 1550 of the twelfth viewpoint. The third frame 1540 may include a third center point P3 and the fourth frame 1550 may include a fourth center point P4. The second reference line 12 may be a line connecting the third center point P3 and the fourth center point P4. The third frame 1540 and the fourth frame 1550 may be adjacent frames.

The first reference line 11 and the second reference line 12 may have different slopes. The first reference line 11 and the second reference line 12 meet at a point when the first reference line 11 and the second reference line 12 are extended and the first reference line 11 and the second reference line 12 meet at an acute angle.

The reference line (l) may be defined in advance according to the shape of the object. Since the X-ray photographing apparatus 1000 of the present invention is used for photographing the entire structure of the dental teeth and the alveolar bone, the reference line l can be predefined according to the shape of the alveolar bone including the jaws of the patient. The reference line 1 may pass through the region of interest of the alveolar bone and the jaw of the patient to be imaged. That is, since the teeth and the alveolar bone are the main areas of interest in the dentistry, the reference line 1 can be preset to pass at least part of the teeth and the alveolar bone.

The reference line 1 may include a region having an inclination depending on a general jaw structure. Since the reference line 1 is formed as an inclined region and the front portion of the jaw does not have a large inclination, the reference line 1 is also used as the panoramic image 1600 In FIG.

The reference line 1 may correspond to the movement path of the X-ray detector 1400. It is also possible to correspond to the X-ray irradiation range of the X-ray generating section 1300. Therefore, the amount of exposure by X-rays can be reduced by setting the reference line 1 to pass through the region of interest and moving the X-ray detecting section 1400 and the X-ray irradiation range. In other words, it is possible to perform the same tooth diagnosis while reducing the amount of X-ray radiation corresponding to the dummy area 1650 without irradiating the panoramic image 1600 with X-rays as much as the dummy area 1650. That is, it is possible to reduce unnecessary area photographing in the process of photographing teeth and alveolar bone, thereby reducing the amount of X-ray exposure.

In addition, the X-ray detecting unit 1400 can be linearly moved in a linear direction so as to correspond to the general shape of the teeth and the alveolar bone to detect X-rays transmitted through the teeth and alveolar bone, The same result can be obtained. Therefore, the manufacturing cost can be reduced.

&Lt; X-ray photographing machine in another embodiment >

In the X-ray photographing apparatus according to another embodiment, the X-ray detecting unit performs only the motion of drawing a call, and the X-ray generating unit irradiates the X-ray in a linear direction in comparison with the embodiment of FIGS. Therefore, in describing the X-ray radiographing apparatus of another embodiment, the same reference numerals are given to the components common to the embodiments of Figs. 1 to 16, and the detailed description thereof is omitted.

- X-rays The detection unit The light- move-

Hereinafter, the structure of the X-ray detecting portion having a structure different from that of FIGS. 6 and 7 of the present invention and the movement of the light receiving region by the X-ray generating portion will be described.

17 is a view showing an X-ray detecting unit according to another embodiment of the present invention.

Referring to FIG. 17, the X-ray detector 1400 according to another embodiment of the present invention may be installed in the detector housing 1410. The X-ray detector 1400 may be fixed to the detector housing 1410.

The X-ray detector 1400 may include a plurality of pixels 1407 positioned on the detector body 1405.

A light receiving area RA may be defined on the X-ray detecting part 1400. The light receiving region RA may be a region irradiated with X-rays. The light receiving region RA may be located on the plurality of pixels 1407. [ The light receiving region RA can be moved by the X-ray generating unit 1300. The light receiving region RA can be moved by limiting the path of the X-ray by the optical path restricting portion 1330 of the X-ray generating portion 1300. The optical path restricting unit 1330 refers to the structure of the X-ray generating unit 1300 described above.

The light receiving region RA includes a first side 1351 adjacent to the first interface 1401, a second side 1352 facing the first side 1351, a second side 1352 facing the first side 1351, And a third side 1353 and a fourth side 1354 connecting the two sides 1352. The second side 1352 is an end of the light receiving area RA adjacent to the second interface 1402 and the third side 1353 is an end of the light receiving area 1403 adjacent to the third interface 1403. [ RA and the fourth side 1354 may be a single end of the light receiving region RA adjacent to the fourth interface 1404. [

The light receiving area RA may have an area smaller than that of the X-ray detecting part 1400.

The light receiving area RA may have a smaller size than the effective area AA where the pixel 1407 of the X-ray detecting part 1400 is located. Alternatively, the light receiving area RA may be narrower than the effective area AA, or may have a wide width. The width of the light receiving area RA may be defined as the length of the first side 1351 and the width of the light receiving area RA may be defined as the length of the third side 1353. [

The light receiving region RA can be moved in the Z-axis direction. The light receiving region RA can be moved along a direction parallel to the third side 1353. The light receiving region RA can linearly move in the Z-axis direction. The linear motion may include a first linear motion and a second linear motion.

The movement in the direction of the second side 1352 of the light receiving region RA can be defined as a first linear motion and the movement in the direction of the first side 1351 can be defined as a second linear motion. The light receiving area RA can perform a reciprocating motion including the first linear motion and the second linear motion by the optical path limiting unit 1330. [

The first side 1351 of the light receiving region RA and the first interface 1401 of the X-ray detecting portion 1400 are moved away from each other by the first rectilinear motion and the second side 1351 of the light receiving region RA 1352 and the second interface 1402 of the X-ray detector 1400 can be close to each other. The first side 1351 of the light receiving region RA and the first interface 1401 of the X-ray detecting portion 1400 are brought close to each other by the second linear motion, Side 1352 and the second interface 1402 of the X-ray detector 1400 can be distant from each other.

The limit surface of the first linear motion of the light receiving region RA may be the second interface 1402. In addition, the limit surface of the second linear motion of the light receiving region RA may be the first interface 1401. That is, the light receiving region RA can not be moved to the outside of the X-ray detecting unit 1400. The optical path limiting unit 1330 may be controlled so as to limit the movement of the light receiving region RA to the outside of the X-ray detecting unit 1400 to prevent external exposure by X-rays.

Further, the light receiving region RA in the previous exposure period may be set to be different from the light receiving region RA in the current exposure period. That is, the light receiving region at a specific point in the exposure period may be set to be different from the light receiving region at the specific point in the previous exposure period.

It is possible to prevent the deterioration of the X-ray generator and to improve the reliability of the panoramic image by setting the light receiving area RA differently in the exposure period.

The light receiving area RA can be linearly moved in a linear direction having a constant angle with respect to the arc drawn by the X-ray generating part 1300 like the X-ray detecting part of FIG.

- Object shooting-

18 is a view showing a movement path of a light receiving region according to another embodiment of the present invention.

Since the movement path of the light receiving region according to another embodiment of the present invention is similar to the movement path of the X-ray detector of Fig. 11, detailed description of parts common to Fig. 11 is omitted.

Referring to FIG. 18, the light receiving region RA according to another embodiment of the present invention can move on the X-ray detecting portion 1400.

Although the X-ray detection unit 1400 and the detection unit housing 1410 are integrally displayed, the X-ray detection unit 1400 and the detection unit housing 1410 are continuously moved with time. Further, although six light-receiving regions RA are shown in the figure, they represent positions at a specific time point of the light-receiving region RA continuously moving.

The light receiving region RA may start to move at the first time point t1 and may end at the eighth time point t8. The light receiving region RA may be moved along the movement path during the first time point t1 to the eighth time point t8. The controller 1100 can control the light path limiting unit 1330 of the X-ray generator 1300 to move the light receiving area RA.

The light receiving area RA can linearly move during the period from the second time point t2 to the seventh time point t7 while maintaining the motion of drawing a call on the X-ray detecting unit 1400. [

The light receiving region RA performs the first linear motion at the second time point t2 to the fourth time point t4 and the second linear motion at the fifth time point t5 to the seventh time point t7.

At the second time point t2, the light receiving region RA is located at the first point. The first point may be a point where the first side 1351 of the light receiving area RA and the first interface 1401 of the X-ray detecting part 1400 are adjacent to each other. At this time, the distance between the first side 1351 and the first interface 1401 may be smaller than the distance between the second side 1352 and the second interface 1402.

When the light receiving region RA performs a linear movement at the second time point t2 to the fourth time point t4, the light receiving region RA moves in the direction of the second boundary surface 1402. The distance between the first side 1351 and the first boundary surface 1401 increases during the second time point t2 to the fourth time point t4 and the distance between the second side surface 1352 and the second boundary surface 1402 increases, Can be reduced. The time at which the distance between the first side 1351 and the first interface 1401 becomes equal to the distance between the second side 1352 and the second interface 1402 may be the third time t3 .

The light receiving region RA can reach the second point at the fourth time point t4 by the first linear motion. The second point may be a point where the second side 1352 of the light receiving area RA and the second boundary surface 1402 of the X-ray detecting part 1400 are adjacent to each other. At this time, the distance between the first side 1351 and the first interface 1401 may be greater than the distance between the second side 1352 and the second interface 1402.

When the light receiving region RA performs a linear movement at the fifth time point t5 to the seventh time point t7, the light receiving region RA moves in the direction of the first boundary surface 1401. [ The distance between the first side 1351 and the first interface 1401 decreases and the distance between the second side 1352 and the second interface 1402 decreases from the fifth time point t5 to the seventh time point t7. Can be increased. The time at which the distance between the first side 1351 and the first interface 1401 becomes equal to the distance between the second side 1352 and the second interface 1402 may be the third time t3 .

The light receiving region RA can reach the first point at a seventh time point t7 by the second linear motion.

The frame generation and the panoramic image generation process in the other embodiment of the present invention are the same as those of FIGS. 12 to 16. FIG. The X-ray imaging apparatus of another embodiment of the present invention can move the light-receiving area RA to which X-rays are irradiated, generate a panoramic image, and reduce the amount of exposure by X-rays. In particular, instead of the separate structure for moving the X-ray detector, there is an effect of reducing manufacturing cost by mounting a separate structure used for movement of the X-ray detector by moving the light receiving area to reduce the amount of exposure.

Although not shown, a mode may be set in another embodiment of the present invention. The mode may include a first mode and a second mode. When the first mode is set, the X-ray detector 1400 performs a linear motion for a certain period of time, and when the second mode is set, only the motion of drawing a call having a certain radius of curvature without linear motion can be performed .

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that changes or modifications may fall within the scope of the appended claims.

1000: X-ray machine
1100: Controller
1200: moving part
1300: X-ray generator
1400: X-ray detector
2000: Device
2100: Processor
2200:
2300:

Claims

An X-ray generator for irradiating X-rays to a target object during an exposure period;
An X-ray detector for detecting X-rays transmitted through the object and generating a plurality of frames during at least a part of the exposure period; And
And a controller for superposing a plurality of frames transmitted from the X-ray detector to form a panoramic image,
The panoramic image is constructed by arranging a plurality of frames in a superimposed manner along a reference line,
Wherein the reference line includes a first reference line area and a second reference line area,
Wherein the first reference line region is a reference for superimposing at least two frames generated between the first viewpoint and the second viewpoint and the second reference line region is a reference for overlapping at least two frames generated between the third viewpoint and the fourth viewpoint, The frame is a reference for superimposing the frames,
Wherein the first reference line region and the second reference line region have different angles with respect to the lower boundary line of the plurality of frames.

The method according to claim 1,
Wherein the first reference line area and the second reference line area are continuous areas.

The method according to claim 1,
Wherein the first reference line area and the second reference line area are spatially separated areas.

The method according to claim 1,
Wherein the baseline is an imaginary baseline.

The method according to claim 1,
And a central point of each frame is positioned on the reference line to generate the panoramic image.

6. The method of claim 5,
And a center point of the frame is a center of gravity of the frame.

The method according to claim 1,
Wherein the baseline is a predefined line.

8. The method of claim 7,
Wherein the reference line is set to pass through an area of interest of the object.

The method according to claim 1,
And a reference line of a partial region between the first reference line region and the second reference line region is parallel to the lower limit line by selection of the first through fourth points of view.

10. The method of claim 9,
And an absolute value of an angle between the first reference line region and the second reference line region is equal to the lower boundary line of the plurality of frames by selection of the first to fourth points of view.

The method according to claim 1,
Wherein the reference line includes a left baseline area and a right baseline area based on a central area of the panoramic image,
Wherein the central region is an area parallel to a bottom boundary line of the plurality of frames.

12. The method of claim 11,
The left baseline region includes a left-
A first region adjacent to the central region,
A second region spaced apart from the central region, and
And a third region located between the first region and the second region,
The absolute value of the angle of the reference line decreases as the first region gets closer to the central region,
Wherein an absolute value of an angle of a reference line increases as the third region gets closer to the central region.

13. The method of claim 12,
And the second region has the same angle as the central region.

12. The method of claim 11,
Wherein the left baseline area and the right baseline area are symmetrical with respect to the center area.

An X-ray generator for irradiating X-rays to a target object during an exposure period;
An X-ray detector for detecting X-rays transmitted through the object and generating a plurality of frames during at least a part of the exposure period; And
And a control unit for generating a panoramic image by superimposing a plurality of frames transmitted from the X-ray detection unit,
The panoramic image is constructed by arranging a plurality of frames in a superimposed manner along a reference line,
Wherein the reference line is constructed by connecting a plurality of reference lines including a first reference line and a second reference line,
The first reference line is a line connecting the first frame of the first viewpoint and the center point of the second frame of the second viewpoint and the second reference line is a line connecting the third frame of the third viewpoint and the center point of the fourth frame of the fourth viewpoint , And
Wherein the first reference line and the second reference line have different slopes.

16. The method of claim 15,
Wherein the first frame and the second frame are adjacent frames, and the third frame and the fourth frame are adjacent frames.

16. The method of claim 15,
Wherein the baseline is predefined according to the shape of the object.

16. The method of claim 15,
Wherein at least a part of the reference line is vertical with respect to a side boundary line of the frame.

16. The method of claim 15,
Further comprising a display unit for outputting an output image including the panorama image,
Wherein the width of the output image is larger than the width of the frame.

20. The method of claim 19,
Wherein the output image includes a dummy area in which a frame is not disposed.

21. The method of claim 20,
And an image of the same gradation is output to the dummy area.

20. The method of claim 19,
Wherein the output image includes a first boundary line and a second boundary line facing the first boundary line,
And the fifth frame at the fifth time point meets the first boundary line and does not meet the second boundary line.

23. The method of claim 22,
And the sixth frame of the sixth viewpoint meets the second borderline, and does not meet the first borderline.

24. The method of claim 23,
And the seventh frame at the seventh viewpoint between the fifth viewpoint and the sixth viewpoint does not meet the first borderline and the second borderline.

Irradiating the object with X-rays during an exposure period;
Detecting X-rays transmitted through the object to generate a plurality of frames for at least a part of the exposure period; And
And superposing the plurality of frames to generate a panoramic image,
The panoramic image is constructed by arranging a plurality of frames in a superimposed manner along a reference line,
Wherein the reference line is constructed by connecting a plurality of reference lines including a first reference line and a second reference line,
The first reference line is a line connecting the first frame of the first viewpoint and the center point of the second frame of the second viewpoint and the second reference line is a line connecting the third frame of the third viewpoint and the center point of the fourth frame of the fourth viewpoint , And
Wherein the first reference line and the second reference line have different slopes.

A computer-readable recording medium storing a program for causing a computer to execute a method of generating a panoramic image using the X-ray radiographing apparatus according to claim 25.

Receiving a plurality of frames generated by detecting X-rays transmitted through a target object; And
And superposing the plurality of frames to generate a panoramic image,
The panoramic image is constructed by arranging a plurality of frames in a superimposed manner along a reference line,
Wherein the reference line is constructed by connecting a plurality of reference lines including a first reference line and a second reference line,
The first reference line is a line connecting the first frame of the first viewpoint and the center point of the second frame of the second viewpoint and the second reference line is a line connecting the third frame of the third viewpoint and the center point of the fourth frame of the fourth viewpoint , And
Wherein the first reference line and the second reference line have different slopes.

29. A computer-readable recording medium storing a program for causing a computer to execute the panorama image generating method of claim 27.