KR102001918B1 - X-ray photographing apparatus and method - Google Patents

Abstract

The present invention relates to an X-ray photographing apparatus and a photographing method using the same. An X-ray imaging apparatus according to the present invention includes a generator unit for generating an X-ray; A sensor unit for receiving X-rays generated by the generator unit; A beam irradiating unit provided on a side surface of the generator unit for irradiating a beam guiding a photographing position of a subject; And a control unit for controlling the operation of the beam irradiating unit so that the beam is irradiated to a reference point corresponding to a specific object, wherein the control unit controls the beam irradiating unit such that a beam irradiated to the reference point passes through the object A region of a predetermined area including a point of incidence may be set as an active region and only an x-ray received in the active region among the x-rays generated in the generator portion may be used for image generation.

Description

X-ray photographing apparatus and method

The present invention relates to an X-ray photographing apparatus and a photographing method using the same.

An X-ray imaging apparatus widely used in the medical technology field irradiates the human body with an X-ray to acquire an image of the inside of the human body. Through the analysis of acquired images, the inside of the human body is diagnosed and abnormalities are detected.

The principle of image generation of an X-ray imaging apparatus is that an X-ray generated from a generator that generates an X-ray is irradiated to an object to be photographed and a X-ray arriving at a part of the object or not is transmitted through a sensor facing the generator, The image is generated by converting the X-rays into electrical signals.

In this case, the X-rays to be irradiated are irradiated on the basis of an arbitrary focus. The X-ray photographing apparatus mainly aims at acquiring an image of the inside of the object to be photographed. In order to set the focus There is a difficulty.

Also, since the X-ray photographing apparatus generates an image according to the degree of transmission, the X-ray transmission amount to the same object may be varied depending on the photographing position and the photographing angle, which may cause a deviation in image quality.

In order to solve these problems, various methods for improving the quality of the x-ray image have been developed. In particular, in order to acquire a clearer image than the panoramic imaging method in which the alveolar bone including the teeth is generated as the two- A method of generating a panoramic image in consideration of the trajectory of the arch of the actual examiner has been developed.

Specifically, a device for photographing a panoramic image generates a panoramic image by rotating and moving a generator and a sensor facing each other in consideration of an arch path, and recombining the acquired partial images.

That is, since the panoramic photographing apparatus acquires one whole image by attaching each partial image, the quality of the panoramic image that is generated according to the position of the patient can be greatly changed. Therefore, it is necessary to set the arch trajectory in consideration of the accurate judgment of the patient's tooth position and the characteristics of the patient's arch. In this connection, Korean Patent Laid-Open Publication No. 10-2013-0030336 (Publication date 2013.03.27) proposes a method of acquiring a clear panoramic image through a canine beam and a position discrimination sensor.

However, the preceding literature suggests a method of varying the angle of incidence of x-rays according to the arch trajectory. However, due to the specificity of the image processing process for reconstructing multiple images as well as the arch trajectory in actual panoramic photographing, x Keeping the x-ray path constant by making the line perpendicular to the light-receiving part of the sensor can also be important in enhancing the sharpness of the partial image.

In addition, since the panoramic photographing apparatus recombines a plurality of images taken partly, it is not necessary to activate all the regions of the sensor, and it is more effective to activate only the portions necessary for photographing the respective partial images. Therefore, There is also a need to study how to increase the efficiency of the sensor.

According to an aspect of the present invention, there is provided a method of photographing an x-ray image with a constant optical path of x-rays passing through a subject.

It is another object of the present invention to increase the efficiency of a sensor by setting only an area necessary for photographing as an active area.

According to an aspect of the present invention, there is provided an X-ray photographing apparatus comprising: a generator unit for generating an X-ray; A sensor unit for receiving X-rays generated by the generator unit; A beam irradiating unit provided on a side surface of the generator unit for irradiating a beam guiding a photographing position of a subject; And a control unit for controlling the operation of the beam irradiating unit so that the beam is irradiated to a reference point corresponding to a specific object, wherein the control unit controls the beam irradiating unit such that a beam irradiated to the reference point passes through the object A region of a predetermined area including a point of incidence may be set as an active region and only an x-ray received in the active region among the x-rays generated in the generator portion may be used for image generation.

The beam irradiating unit may further include a moving module for moving at least one direction from one side of the generator unit, and the control unit may control the moving module such that the beam is irradiated on the reference point.

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The beam is preferably incident perpendicularly to the surface of the sensor unit.

Preferably, the control unit recognizes the coordinate value of the current position of the moved beam irradiation unit by inversely calculating the driving value of the moving module, and sets the active area when the beam is virtually incident on the basis of the coordinate value Do.

The controller may set at least one unit area including a unit area including the one point among the plurality of unit areas for partitioning the sensor part as the active area.

Preferably, the control unit sets the active area further considering the personal information of the subject.

Preferably, the X-ray photographing apparatus further includes a rotation driving unit that rotates the generator unit and the sensor unit in the photographing mode, and the control unit sets the active area in consideration of the photographing mode.

The photographing mode may be a panoramic photographing mode or a cephalometric photographing mode.

According to an aspect of the present invention, there is provided an X-ray photographing apparatus comprising: a generator unit for generating an X-ray; A sensor unit for receiving X-rays generated by the generator unit; A beam irradiating unit provided on a side surface of the generator unit for irradiating a beam guiding a photographing position of a subject; A control unit for controlling the operation of the beam irradiation unit such that the beam is irradiated to a reference point corresponding to a specific object; And a rotation driving unit that rotates the generator unit and the sensor unit that are opposed to each other in accordance with the locus of the arch, and the control unit controls the one point of the sensor unit, which is irradiated with the beam irradiated to the reference point virtually or through the object, The active region of the sensor unit may be set based on the arch locus and only the x-rays received from the active region among the x-rays generated by the generator unit may be used for image generation.

Preferably, the beam irradiating unit further includes a moving module for moving at least one direction from one side of the generator unit, and the control unit controls the moving module so that the beam is irradiated on the reference point.

According to an aspect of the present invention, there is provided an X-ray imaging method including moving a beam irradiating unit such that a beam guiding a photographing position of a subject is irradiated to a reference point corresponding to a specific object; Setting, as an active area, one area of a predetermined area including a point at which a beam irradiated to the reference point passes through the object, either through the object or through the area of the sensor part; Determining an arch locus of the subject in consideration of transposition position information of the subject and one-point information of the subject irradiated with the beam; Obtaining a x-ray transmission image for the subject by using only the x-ray received from the active area among the x-rays generated in the generator part by rotating the generator part opposed to the sensor part and the sensor part along the locus of the arch; And generating a panoramic image by combining the acquired x-ray transmission images.

Preferably, the setting step sets at least one unit area including a unit area including the one point out of a plurality of unit areas for partitioning the sensor part as the active area.

Wherein the setting step includes a step of recognizing a coordinate value of a current position of the moved beam irradiation unit by inversely calculating a driving value of the beam irradiation unit and the moving direction in the moving step, At least one of the unit areas of the beam is set as the active area when the beam is virtually incident.

Preferably, the setting step further sets the active area in consideration of the personal image information of the subject, and the determining step determines the locus of the dacryocote considering the personal image information.

According to the present invention, a clearer x-ray image can be obtained by making the optical path of the x-rays passing through the subject constant.

Further, according to the present invention, only the area necessary for photographing is set as an active area to increase the efficiency of the sensor, and the efficiency of use of the sensor, which is expensive compared to the X-ray generator, is relatively increased and the area of the sensor is utilized uniformly, The manufacturing cost of the entire X-ray imaging apparatus can be reduced.

Further, as the manufacturing cost is reduced, the imaging cost for diagnosis can be reduced and the usability of the X-ray imaging apparatus can be further increased.

Furthermore, a condition for acquiring a high-quality image can be generated in consideration of the photographing reference point of the subject, thereby enabling more precise diagnosis.

1 is an exemplary view showing an X-ray photographing apparatus according to an embodiment of the present invention.
2 is an exemplary view showing an X-ray photographing apparatus according to the prior art.
FIG. 3 is an exemplary view showing an image capturing example of the X-ray imaging apparatus according to FIG. 2;
4 and 5 are diagrams illustrating an example of driving an X-ray imaging apparatus according to an embodiment of the present invention.
FIG. 5 is an exemplary view showing an example of the X-ray photographing apparatus viewed from the front according to an embodiment of the present invention.
6 is a block diagram showing the configuration of an X-ray imaging apparatus according to an embodiment of the present invention.
7 is an exemplary view showing a sensor unit of an X-ray imaging apparatus according to an embodiment of the present invention.
8 is a flowchart illustrating an X-ray imaging method according to an embodiment of the present invention.

The following merely illustrates the principles of the invention. Therefore, those skilled in the art will be able to devise various apparatuses which, although not explicitly described or shown herein, embody the principles of the invention and are included in the concept and scope of the invention. It is also to be understood that all conditional terms and examples recited in this specification are, in principle, expressly intended for the purpose of enabling the inventive concept to be understood, and not limited to specially enumerated embodiments and conditions .

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: .

In the following description, a detailed description of known technologies related to the present invention will be omitted when it is determined that the gist of the present invention may be unnecessarily blurred. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary view showing an X-ray photographing apparatus according to an embodiment of the present invention.

Referring to FIG. 1, an X-ray imaging apparatus according to the present embodiment includes a generator unit 100, a beam irradiator 110, and a sensor unit 200.

In this embodiment, the generator unit 100 generates x-rays. At this time, in this embodiment, the generator unit 100 generates an X-ray according to the first mode or the second mode.

In this embodiment, the mode is used to distinguish a photographing method using an X-ray. In the present embodiment, the first mode may be a panoramic image photographing mode. Through the panoramic image, the whole tooth condition and structure can be grasped and used for diagnosis and operation.

The second mode may be a computed tomography (CT) imaging mode. 3D image can be acquired through CT image and the 3D structure inside the human body can be grasped.

In the present embodiment, the generator unit 100 irradiates the sensor unit 200 with x-rays, which are not shown, depending on the intensity of the x-rays, the dose of the x-rays, and the irradiation method determined by the control unit in accordance with the shooting mode. Furthermore, the generator unit 100 can determine the irradiation range through a separate collimator. Also, it is possible to change the focus for a specific subject to be photographed, or to generate X-rays according to other set photographing conditions.

In the present embodiment, the sensor unit 200 receives the X-ray generated by the generator unit 100. FIG. Specifically, the sensor unit 200 absorbs the X-rays transmitted from the generator unit 100 and converts the X-rays into electric signals. And the image can be generated using the converted electric signal.

In addition, in the present embodiment, the sensor unit 200 may have different active regions 210 according to each photographing mode. For example, in the first mode and the second mode, an X-ray generated in the generator unit 100 may be collected, and an image may be generated using only X-rays collected through different active areas 210.

In this embodiment, although not shown, the X-ray imaging apparatus may further include a control unit. The control unit can transmit a control signal to the generator unit 100 and the sensor unit 200. The control unit can control the shooting condition or the active area and the like in software to configure the shooting environment according to the shooting mode .

In addition, the control unit controls the physical operation of the generator unit 100 and the sensor unit 200 by hardware control, thereby configuring the shooting environment according to each shooting mode.

For example, in the present embodiment, the control unit may perform imaging according to the first mode by rotating the generator unit 100 and the sensor unit 200 in a state where the generator unit 100 and the sensor unit 200 are opposed to each other, can do.

Referring to FIG. 1, the X-ray photographing apparatus 1000 according to the present embodiment may further include a beam irradiating unit 110 for guiding a photographing position of a subject when photographing in the first or second mode.

Specifically, the beam irradiating unit 110 may be formed on one side of the generator unit 100.

1, when a panoramic image of a patient's arch is photographed according to the first mode, the beam irradiating unit 110 irradiates the patient 10 with a beam to irradiate the beam 50 to the canine 50 of the patient 10, ) Can be guided.

Thus, the X-ray photographing apparatus 1000 indirectly recognizes that the patient is located at the reference position for panoramic photographing and rotates to photograph the X-ray image.

Also, in this embodiment, the controller 400 can determine the active area 210 of the sensor unit 200 using the beam.

Specifically, the controller 400 controls the active area 210 of the sensor unit 200 in consideration of one point on the object to which the beam is directly irradiated or a point on the sensor unit 200, which is irradiated through the object, Can be set.

For example, when a panoramic image is photographed according to the first mode, since the partial image of the patient is reconstructed, driving efficiency of the sensor can be further increased by driving the sensor only to acquire the partial image.

That is, the photographing efficiency of the panoramic image can be increased by setting the active region 210 of the sensor to the beam of the beam irradiating unit 110 as a reference. It is also possible to reduce the dose of the patient by controlling the irradiation range of the X-rays in the generator in consideration of the active area 210.

However, even if the patient is positioned at a predetermined alignment position, the active area 210 may be changed depending on the patient's sex, age, or oral structure.

For example, referring to FIG. 2, the case of FIG. 2 is a case where the canine 50 of the patient 10 is positioned behind, as compared with FIG. 1, It is possible to reach the sensor unit 200 while tilting at a predetermined angle.

When the active region 210 is set on the basis of the beam irradiation position of the sensor unit 200 as described above, the opposing sensor unit 200 and the generator unit 100 are rotated 180 degrees, In the case of a panoramic image for acquiring a panoramic image, the active region 210 may not be obtained for some teeth and thus may not be photographed.

Therefore, the panoramic image generated by missing part of the teeth and recombining in the partial image may not be used.

3, when the active region 210 is set through the beam irradiated by the beam irradiating unit 110, a virtual path along which the beam travels corresponds to the photographing range. have.

That is, if the beam arrival position for determining the first active region 210 is set to the active region 210, even if the sensor unit 200 and the generator unit 100 rotate 180 degrees, the active region 210 of the sensor unit 200 A region 32 that is not covered by the substrate 210 may occur.

Therefore, in order to solve this problem, it is necessary to perform additional rotation in consideration of the angle of incidence of the beam with respect to the sensor unit 200 exceeding the rotation angle of 180 degrees, move the active region 210 during the final partial image capturing, Or the like may be required.

However, such a change in the rotation angle and the change in the photographing of the active area 210 may require more computation to recombine the partial images for the generation of the panoramic image, and other software processing steps are always required depending on the position of the canine A problem may arise.

Accordingly, the X-ray photographing apparatus 1000 according to the embodiment of the present invention physically changes the position of the beam irradiating unit 110 to reduce the above-described software processing, thereby setting a more accurate active region 210 And to propose a method.

6, an X-ray imaging apparatus 1000 according to an exemplary embodiment of the present invention includes a generator unit 100, a sensor unit 200, a beam irradiation unit 110, a rotation driving unit 300, and a controller 400. [ .

The generator unit 100 generates an X-ray according to the first mode or the second mode as described above. In this embodiment, the generator unit 100 may further include a beam irradiating unit 110. The beam irradiating unit 110 irradiates the object 200 from one side of the generator unit 100 toward the sensor unit 200, A beam guiding the beam is irradiated.

In this embodiment, the beam irradiating unit 110 irradiates a beam toward a reference point serving as a photographing reference of the object, and the beam transmitted through the reference point is incident on one point of the sensor unit 200. At this time, the active region 210 of the sensor unit 200 is set up including a point where the beam is incident.

However, if the active area 210 of the sensor unit 200 is set in consideration of only the current position of the subject without considering the structural characteristics of the subject, as in the example of FIGS. 2 and 3, It may happen that a part of the subject is not photographed by the active area 210. [

Therefore, in this embodiment, the beam irradiating unit 110 can be configured to be movable on one side of the generator unit 100 through the movement module.

The movement module according to this embodiment will be described in more detail below.

Next, in the present embodiment, the sensor unit 200 receives the X-rays generated in the generator unit 100. FIG. As described above, the X-ray photographing apparatus 1000 according to the present embodiment can photograph in various modes. The sensor unit 200 can set the active area 210 according to the photographing mode. In addition, the sensor unit 200 according to the present embodiment can set the active region 210 differently according to the subject even in the same shooting mode and utilizes the beam as a reference for setting the active region 210.

Hereinafter, a moving module for moving the beam irradiating unit 110 according to the present embodiment will be described in more detail.

Referring to FIG. 4, in this embodiment, the beam irradiating unit 110 is capable of moving forward or backward from one side of the generator unit 100 through the movement module.

2, when the patient's canine is positioned relatively rearward, the irradiation position of the beam is changed while changing the irradiation angle of the beam so that the beam is transmitted through the reference point, It is possible to set the canine to be transmitted.

The control unit 400 according to the embodiment of the present invention is configured such that one point irradiated with a beam guiding the position of the subject from the one side of the generator unit 100 toward the sensor unit 200 becomes the shooting reference of the subject And drives the moving module to correspond to the reference point.

Referring to FIG. 5, the beam irradiating unit 110 according to the present embodiment can be moved through a moving module in one direction. Through this, the reference point, which is a reference for radiographic photographing, is irradiated without changing the irradiation angle can do. That is, in the case of FIG. 5, when the canine 50 of the patient 10 is located behind the point where the X-rays are irradiated from the generator unit 100, the beam irradiating unit 110 can be moved backward.

When the beam irradiating unit 110 is moved through the above process, the control unit 400 considers one point on the subject to which the beam is directly irradiated or a point on the sensor unit 200 irradiated through the subject, The active area 210 of the sensor unit 200 is set.

Referring to FIG. 5, the beam irradiated from the beam irradiating unit 110 moved to a predetermined position through the moving module is incident perpendicularly to the surface of the sensor unit 200. 3, the active region 210 of the sensor unit 200 can be formed at the inverted position at the initial position even if the active region 210 is rotated 180 degrees by the panoramic photographing.

That is, according to the present invention, a clearer x-ray image can be obtained by making the optical path of the x-rays passing through the subject constant.

When the beam is irradiated to the reference point on the object through the above process, the control unit 400 recognizes and sets the position of the beam directly reaching the sensor unit 200 in the active area 210, The position of the sensor unit 200 may be calculated using the movement value of the beam irradiating unit 110, and the active area 210 may be set.

Hereinafter, a concrete setting method of the active area 210 will be described.

A method of setting the active region 210 of the sensor unit 200 using the value moved by the beam irradiation unit 110 will now be described. The movement value of the beam irradiation unit 110 is a drive value of the actual movement module Can be calculated. That is, when the beam irradiating unit 110 is directly moved or irradiated with a software movement command so that the beam irradiated from the beam irradiating unit 110 is irradiated to the reference point such as the patient's canine, the moving module calculates the driven value according to the movement .

For example, the coordinate value of the current moving position of the beam irradiating unit 110 can be recognized by inversely calculating the driving value of the moving module from the coordinates of the initial beam irradiating unit 110, and the position of the corresponding sensor unit 200 The active area 210 can be set to include the active area 210. [

That is, in the above-described example, the controller 400 controls the active area 210 of the sensor unit 200 by using the driving value of the moving module such that one point irradiated with the beam corresponds to the reference point of the subject Can be set.

Alternatively, when the beam can transmit the object, the active region 210 can be set using a point where the beam directly enters the sensor unit 200. [

That is, the control unit 400 can set an area including one point irradiated on the sensor unit 200 through the reference point of the subject as the active area 210 of the sensor unit 200 have.

Also, in this embodiment, the controller 400 may determine the size of the active area 210 in various ways in setting the active area 210 using the beam.

For example, the control unit 400 may control at least one unit area of the plurality of unit areas for dividing the sensor unit 200 in consideration of one point on the subject or one point on the sensor unit 200, The active region 210 can be set.

Referring to FIG. 7, the sensor unit 200 according to the present embodiment can set the active region 210 by dividing the entire area that can be sensed as a large-area sensor into a plurality of unit regions.

For example, when a beam transmitted through a subject is incident on one point 112 with reference to FIG. 7, the unit area 210 including one point 112 can be set as the active area 210. [

In addition, the active area 210 may be extended to a peripheral area based on the one point 112. At this time, the extended range to the peripheral area can be determined in consideration of factors influencing shooting such as a shooting mode, personal information of the subject, and the like.

 First, a method of setting an extended range in consideration of a shooting mode will be described. In a case where the shooting mode is the first mode, a plurality of partial images are captured and recombined to generate a panoramic image. Area 210 as shown in FIG.

On the other hand, when the CT photographing is performed on the head of the patient as the second mode, a plurality of images are collected through rotation, but the entire area of the head is photographed. However, in the case of CT imaging, a CT image within a specific height range may be required instead of the whole head portion. Therefore, it is also possible to determine the extension range only by the unit areas corresponding to the specific height, taking into consideration the exposure amount.

That is, the image processing time and cost for generating the image can be reduced by acquiring the transmission image using only the transverse area of the sensor corresponding to the rotation direction and processing the acquired image to generate the CT image.

7, it is also possible to set the active area 210 as unit areas corresponding to the same row of the unit area 210 directly corresponding to one point 112. [

Next, a description will be given of a method of setting an extended range using personal information of a subject. Information such as the sex, age, key, and the like of the subject can be used as personal information. In general, a male is larger and wider than a female. Therefore, the active area 210 can be set in consideration of this, and the active area 210 can be set in consideration of a large height or weight.

Furthermore, it is also possible to consider the position of the subject aligning device as a reference of the photographing position of the subject as the subject information. For example, the dental X-ray imaging apparatus 1000 can use an alignment apparatus having a structure that can be directly dentalized by a person to guide the position of the subject. At this time, position information of the human transposition can be obtained through the alignment apparatus.

In this state, when the beam irradiating unit 110 according to the present embodiment is moved to be irradiated to the canine of a person, position information of the canine can be acquired.

Using the position information of the canine and the canine obtained through the above process, the approximate shape of the arch can be inferred. For example, if the distance between the canine and the canine is greater than the average value of the same sex and age Small.

Accordingly, the extension range for setting the active area 210 can be determined using this information.

Next, in this embodiment, the rotation driving unit 300 rotates the generator unit 100 and the sensor unit 200 facing each other according to the photographing mode when the active region 210 is determined.

At this time, the rotating locus can be determined by using the above-described personal information of the object, all the information used for setting the active area 210.

In addition, the X-ray photographing apparatus 1000 according to the above embodiments can utilize the conventional image according to each photographing mode as auxiliary data for photographing in the other mode and setting the active area 210. [ Although not shown for this purpose, the X-ray imaging apparatus 1000 may further include a memory unit for storing photographed images and photographing information including photographing conditions.

In this embodiment, the memory unit (not shown) may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory XD memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read- ), A magnetic memory, a magnetic disk, and / or an optical disk.

Hereinafter, an X-ray imaging method using the X-ray imaging apparatus 1000 according to the above-described embodiment will be described.

Referring to FIG. 8, in the X-ray imaging method according to the present embodiment, the beam irradiating unit 110 moves so that one point irradiated with the beam corresponds to a reference point serving as a photographing reference of the object (S100).

That is, in the moving step S100, the beam irradiating unit 110 may move forward or backward from one side of the generator unit 100 through the moving module as shown in FIG.

For example, when the patient's canine is located relatively rearward, the irradiation angle of the beam is changed so that the canine is transmitted through the reference point. Instead, the irradiation position of the beam irradiation unit 110 is moved while the irradiation angle of the beam is maintained, Can be moved.

An area including a point where a next beam is transmitted through the reference point of the subject and irradiated onto the sensor unit 200 is set as an active area 210 of the sensor unit 200 at step S200.

As described above, in the present embodiment, when the beam can pass through the object, the active area 210 can be set to the active area 210 using a point where the beam directly enters the sensor part 200. [

That is, in the step S200, the beam passes through the reference point of the object and is irradiated onto the sensor unit 200, and the region including the point is moved to the active area 210 of the sensor unit 200 Can be set.

In addition, the size of the active area 210 of the setting step S200 can be determined in various ways. As described above, the size of the active area 210 is determined by the shooting mode, Can be determined.

For example, in the case of the panoramic photographing mode, only one unit area can be determined as the active area 210 without additional expansion based on FIG.

Next, when the active area 210 is set, the arch locus of the subject can be determined in consideration of the positional information of the subject and the one-point information of the subject irradiated with the beam.

That is, in the case of the panoramic photographing mode, the sensor unit 200 and the generator rotate with respect to the locus of the dichotomy, and a plurality of partial images are photographed. In order to obtain a clearer image, .

Therefore, one-point information on which the beam is irradiated to set the arch trajectory and feature information obtained by the patient aligning apparatus used for aligning the patient can be used.

When the arch locus is set, the generator unit 100 facing the sensor unit 200 and the sensor unit 200 are rotated along the locus of the arch, and the X-ray transmission image of the subject is acquired (S300).

Next, the obtained x-ray transmission image is combined to generate a panorama image (S400).

8, in the case of capturing a CT image, the setting step S200 moves the beam irradiating unit 110 in consideration of a reference point (S100) All the unit areas of the same row including the active area 210 can be set as the active area 210. [

Next, the entire tomographic image can be acquired by rotating based on the cervical vertebra rather than the arch trajectory, and the CT image can be generated by image processing again.

According to the present invention as described above, a clearer x-ray image can be obtained by making the optical path of the x-rays passing through the subject constant.

Further, according to the present invention, only the area necessary for photographing is set as an active area to increase the efficiency of the sensor, and the efficiency of use of the sensor, which is expensive compared to the X-ray generator, is relatively increased and the area of the sensor is utilized uniformly, The manufacturing cost of the entire X-ray imaging apparatus can be reduced.

Further, as the manufacturing cost is reduced, the imaging cost for diagnosis can be reduced and the usability of the X-ray imaging apparatus can be further increased.

Furthermore, a condition for acquiring a high-quality image can be generated in consideration of the photographing reference point of the subject, thereby enabling more precise diagnosis.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control module 115 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory unit and can be executed by the control unit 400 (not shown).

It will be apparent to those skilled in the art that various modifications, substitutions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. will be.

Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (21)

A generator unit for generating an X-ray;
A sensor unit for receiving X-rays generated by the generator unit;
A beam irradiating unit provided on a side surface of the generator unit for irradiating a beam guiding a photographing position of a subject; And
And a control unit for controlling the operation of the beam irradiation unit such that the beam is irradiated onto a reference point corresponding to a specific object,
Wherein,
Wherein one of the areas of the sensor unit, which has a predetermined area including a point irradiated with the beam irradiated to the reference point or transmitted through the subject, is set as an active area,
Wherein only the x-rays received in the active region among the x-rays generated in the generator unit are used for image generation. The method according to claim 1,
Wherein the beam irradiating unit further comprises a moving module for moving at least one direction from one side of the generator unit,
Wherein the control unit controls the moving module so that the beam is irradiated on the reference point. 3. The method of claim 2,
Wherein the beam is incident on the surface of the sensor unit vertically. delete 3. The method of claim 2,
The control unit recognizes the coordinate value of the current position of the moved beam irradiation unit by inversely calculating the driving value of the moving module and sets the active area when the beam is virtually incident on the basis of the coordinate value Ray photographing apparatus. The method according to claim 1,
Wherein the control unit sets at least one unit area including a unit area including one point out of a plurality of unit areas for partitioning the sensor unit as the active area. delete The method according to claim 1,
Wherein the control unit sets the active area in consideration of the personal image information of the subject. The method according to claim 1,
The X-
Further comprising a rotation driving unit that rotates the generator unit and the sensor unit that are opposed to each other in accordance with the shooting mode,
Wherein the controller sets the active area in consideration of the photographing mode. The method of claim 9, wherein
Wherein the photographing mode is a panoramic image capturing mode or a cephalometric image capturing mode. A generator unit for generating an X-ray;
A sensor unit for receiving X-rays generated by the generator unit;
A beam irradiating unit provided on a side surface of the generator unit for irradiating a beam guiding a photographing position of a subject;
A control unit for controlling the operation of the beam irradiation unit such that the beam is irradiated to a reference point corresponding to a specific object; And
And a rotation driving unit that rotates the generator unit and the sensor unit that face each other in accordance with the locus of the arch,
Wherein,
Setting an active area of the sensor unit based on one point of the sensor unit and a track of the arch that is irradiated with the beam irradiated to the reference point or through the object,
Wherein only the x-rays received in the active region among the x-rays generated in the generator unit are used for image generation. 12. The method of claim 11,
Wherein the beam irradiating unit further comprises a moving module for moving at least one direction from one side of the generator unit,
Wherein the control unit controls the moving module so that the beam is irradiated on the reference point. 13. The method of claim 12,
Wherein the beam is incident on the surface of the sensor unit vertically. delete 14. The method of claim 13,
The control unit recognizes the coordinate value of the current position of the moved beam irradiation unit by inversely calculating the driving value of the moving module and sets the active area when the beam is virtually incident on the basis of the coordinate value Ray photographing apparatus. Moving a beam irradiating unit such that a beam guiding a photographing position of a subject is irradiated to a reference point corresponding to a specific subject;
Setting, as an active area, one area of a predetermined area including a point at which a beam irradiated to the reference point passes through the object, either through the object or through the area of the sensor part;
Determining an arch locus of the subject in consideration of transposition position information of the subject and one-point information of the subject irradiated with the beam;
Obtaining a x-ray transmission image for the subject by using only the x-ray received from the active area among the x-rays generated in the generator part by rotating the generator part opposed to the sensor part and the sensor part along the locus of the arch; And
And combining the acquired x-ray transmitted images to generate a panoramic image. 17. The method of claim 16,
Wherein the setting step comprises:
Wherein at least one unit area including a unit area including the one point among a plurality of unit areas for partitioning the sensor unit is set as the active area. 18. The method of claim 17,
Wherein the setting step comprises:
Recognizing a coordinate value of a current position of the moved beam irradiating unit by inversely calculating a driving value of the beam irradiating unit and a moving direction of the beam irradiating unit in the moving step, and determining at least one of the plurality of unit areas based on the coordinate value Is set as the active region when the beam is virtually incident. 17. The method of claim 16,
Wherein the setting step sets the active area further considering personal information of the subject,
Wherein the determining step further determines the arch path based on the personal image information. Moving a beam irradiating unit such that a beam guiding a photographing position of a subject is irradiated to a reference point corresponding to a specific subject;
Setting, as an active area, one area of a predetermined area including a point at which a beam irradiated to the reference point passes through the object, either through the object or through the area of the sensor part;
Determining an arch locus of the subject in consideration of transposition position information of the subject and one-point information of the subject irradiated with the beam;
Obtaining a x-ray transmission image for the subject by using only the x-ray received from the active area among the x-rays generated in the generator part by rotating the generator part opposed to the sensor part and the sensor part along the locus of the arch; And
And generating a panoramic image by combining the obtained X-ray transmission image with the acquired X-ray transmission image. The computer is stored in a readable recording medium,
Moving a beam irradiating unit such that a point irradiated such that a beam guiding a photographing position of the object is irradiated to a reference point corresponding to a specific object corresponds to a reference point serving as a photographing reference of the object;
Setting, as an active area, one area of a predetermined area including a point at which a beam irradiated to the reference point passes through the object, either through the object or through the area of the sensor part;
Determining an arch locus of the subject in consideration of transposition position information of the subject and one-point information of the subject irradiated with the beam;
Obtaining a x-ray transmission image for the subject by using only the x-ray received from the active area among the x-rays generated in the generator part by rotating the generator part opposed to the sensor part and the sensor part along the locus of the arch; And
And generating a panoramic image by combining the acquired X-ray transmission images.

Images