KR20170081871A

KR20170081871A - X-ray Imaging Apparatus

Info

Publication number: KR20170081871A
Application number: KR1020160000844A
Authority: KR
Inventors: 김영균; 김태우; 최성일
Original assignee: 주식회사바텍; (주)바텍이우홀딩스
Priority date: 2016-01-05
Filing date: 2016-01-05
Publication date: 2017-07-13

Abstract

Disclosed is an x-ray image photographing apparatus capable of providing a composite image in which three-dimensional x-ray image data and three-dimensional optical image data are combined, as well as an x-ray image photographing of an examinee and a facial photographing using an optical camera. An X-ray imaging apparatus according to the present invention includes an X-ray imaging unit for acquiring X-ray data necessary for reconstructing a three-dimensional X-ray image of a subject's head and an optical imaging unit for acquiring visible light data necessary for reconstructing a three- Wherein the optical photographing unit comprises: an optical camera for photographing a face portion of the subject at a fixed position; A plurality of eye-guiding parts for guiding a line of sight of the examinee in the same direction as the optical camera; And a control unit for guiding the subject's gaze in a direction different from the optical camera during continuous shooting of the optical camera so that the subject's face is photographed at various angles.

Description

X-ray Imaging Apparatus

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an X-ray imaging apparatus, and more particularly, to an X-ray imaging apparatus that provides an X-ray CT image or a panorama image using a head of a subject including a tooth and a jaw joint as a main subject.

In the medical field, an X-ray imaging apparatus refers to a device that transmits a predetermined amount of X-rays to a part of a body to be imaged, detects X-rays transmitted through the X-ray sensor, and forms an image based on the sensed electrical signals. The X-rays are attenuated and transmitted at different attenuation rates depending on the material on the traveling path, and when they reach the X-ray sensor, they are converted into electrical signals by photoelectric effect. The X-ray photographing apparatus provides an image of the inside of the object to be photographed by using an electrical signal reflecting the cumulative attenuation amount along the X-ray path.

In the field of dentistry, the CT image can accurately and clearly display a tomographic image according to a user's desired position and direction, as well as a three-dimensional image of a dentition, a jaw joint or a head part, And the like are used in fields requiring high precision. In addition, the panoramic image showing the image layer corresponding to the arch of the arch has long been a standard image for diagnosis. The x-ray imaging apparatus reconstructs the x-ray images taken at various angles while rotating around the object to be imaged, and provides three-dimensional images, tomographic images, or panoramic images of these regions. For this purpose, an X-ray imaging apparatus includes an X-ray generator, an X-ray sensor disposed opposite to the X-ray generator and a X-ray generator, a rotation support for supporting and rotating the X-ray sensor, And an image reconstruction unit for implementing a panoramic image.

Recently, the use of 3D x-ray imaging is also increasing in orthodontics. The orthodontic correction and correction of the jaw joint have a great effect on the patient's impression through the change of the facial contour before and after the study. The research is carried out in order to predict the change of the impression including the facial contour using the 3-dimensional x- .

The X-ray imaging apparatus according to the present invention is an X-ray imaging apparatus which is capable of providing X-ray imaging capable of providing a composite image in which three-dimensional x-ray image data and three-dimensional optical image data are combined, An object of the present invention is to provide a photographing apparatus.

More specifically, the X-ray imaging apparatus according to the present invention includes an X-ray imaging unit housing to prevent the imaging unit from being rotated by the X-ray imaging unit during the X-ray imaging, An X-ray image photographing apparatus capable of acquiring optical image data necessary for reconstructing a composite image in which a three-dimensional X-ray image and a three-dimensional optical image are combined using only one fixed optical camera using a fixed structure The purpose is to provide.

In order to solve the above-described problems, an X-ray imaging apparatus according to the present invention includes an X-ray imaging unit for acquiring X-ray data necessary for reconstructing a three-dimensional X-ray image of a subject's head, And an optical photographing unit for obtaining visible light data, wherein the optical photographing unit comprises: an optical camera for photographing a face portion of the subject at a fixed position; A plurality of eye-guiding parts for guiding a line of sight of the examinee in the same direction as the optical camera; And a control unit for guiding the subject's gaze in a direction different from the optical camera during continuous shooting of the optical camera so that the subject's face is photographed at various angles.

The x-ray image photographing apparatus may further comprise a reconstructing unit that reconstructs the x-ray data obtained by the x-ray photographing unit and the visible light data obtained by the optical photographing unit, and provides a composite image in which the three- And a reconstruction unit. The apparatus may further include a speaker for interlocking with the gaze guidance unit and informing the viewer of the time of eye gaze movement.

Wherein the plurality of visual-guidance units include: a first visual-guidance unit for guiding the visual line of the examinee in the same direction as the optical camera; A second eye guiding part disposed in a direction shifted by a predetermined angle from the direction of the optical camera to either side of the examinee; And a third eye guiding unit disposed in a direction that is opposite to a direction in which the second eye guiding unit is disposed in the direction of the optical camera centered on the subject, and which is rotated by a predetermined angle. In this case, the first illumination is disposed toward the subject's face from the side where the second sight guidance portion is disposed; And a second illumination unit disposed toward the subject's face from the side on which the third visual-guidance unit is disposed. At this time, the control unit may control the operation of the first illumination and the second illumination in cooperation with the first through third eyes guiding units.

The x-ray image photographing apparatus includes an x-ray photographing section housing installed to raise and lower relative to a head of a subject and covering an inner side surface and an outer side surface of a range in which the generator and the sensor section are rotated, And a handle frame having a chin rest supporting the head of the examinee, wherein the optical camera and the plurality of gaze guidance portions can be arranged to face the subject's face to the X-ray photographing portion housing or the handle frame . In this case, the optical camera may be installed in the handle frame, and the plurality of visual guidance portions may be disposed in the X-ray imaging unit housing.

According to the present invention, there is provided an x-ray image photographing apparatus capable of providing a composite image in which three-dimensional x-ray image data and three-dimensional surface image data are combined, as well as an x- do.

The X-ray imaging apparatus according to the present invention includes an X-ray imaging unit housing to prevent exposure of the imaging unit to rotation during an X-ray imaging operation to the subject and a third person, thereby providing a sense of stability to the subject to prevent motion artifacts have. In addition, since it is possible to acquire visible light data necessary for reconstructing a composite image in which a three-dimensional x-ray image and a three-dimensional surface image are combined using only one optical camera installed to be fixed during shooting, it is efficient.

1 shows an X-ray imaging apparatus according to an embodiment of the present invention.
Fig. 2 shows an example of the configuration of the optical photographing unit in the embodiment of Fig.
FIG. 3 schematically shows a state in which surface image data is acquired using the optical photographing unit illustrated in FIG.
FIG. 4 schematically shows a state in which surface image data is acquired using the optical photographing unit illustrated in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The technical idea of the present invention can be clearly understood through the examples. 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 invention. something to do. It is to be understood that the same reference numerals used in different embodiments are used to designate the same or similar components, and a description of components having the same reference numerals as those described in any one embodiment may be applied to other embodiments And may be omitted in order to prevent unnecessary duplication.

1 shows an X-ray imaging apparatus according to an embodiment of the present invention.

The X-ray imaging apparatus according to the present embodiment includes a base frame 60 supported on a floor surface, a lift unit 10 installed to move up and down with a part of the base frame 60 being overlapped with each other, Ray imaging section housing 40 extending from the patient's body 10 to the upper side of the patient's chair. Below the X-ray imaging unit housing 40, a handle frame 20 for fixing a head including a head, a face, and a jaw of a subject is disposed. On the handle frame 20, a head rest, a chin rest 23 is disposed on the chin rest 23 and a bite block 22 is provided on the chin rest 23 to fix the position of the head to the examinee. The handle frame 20 has a portion in the form of a vertical column and is inserted into the handle frame base 26 fixed relative to the base frame 60. The handle frame 20 is installed vertically with respect to the handle frame base 62 so as to be adjustable in height.

An X-ray photographing section is provided in the X-ray photographing section housing 40. The X-ray radiographing section includes a rotation driving section, a rotation support section, and a sensor section and a generator section arranged on both sides of the rotation support section, though not shown. The X-ray photographing section housing 40 forms an outer appearance of the X-ray photographing section which surrounds the outer surface of the range in which the sensor section and the generator section are rotated. In addition, it is possible to prevent the components of the X-ray photographing unit rotating around the inside of the rotation range from being visible to the examinee. Thus, it is possible to prevent anxiety or reflex movement of the subject according to the operation of the X-ray photographing unit, and as a result, motion artifacts in the X-ray image can be prevented.

The X-ray imaging apparatus 100 according to the present embodiment includes an optical camera 110 that acquires visible light data on the face surface of the subject. The optical camera 110 may be fixedly disposed at a position where the subject's face such as the lower part of the photographing case 40 or the upper part of the handle frame 20 can be photographed. In this embodiment, And is disposed on the upper portion of the handle frame 20 so as to face the front face of the handle frame 20. The X-ray imaging apparatus 100 according to the present embodiment combines the visible light data of the face of the subject acquired by the optical camera 110 with the X-ray data acquired by the X-ray imaging unit to generate a three- A composite image combining images can be reconstructed and provided. For this purpose, visible light data, that is, optical photographing data, obtained by photographing the face of the subject in various directions is required.

The X-ray image radiographing apparatus 100 according to the present embodiment includes an optical camera 110 for performing continuous radiography for a predetermined period of time under the control of a control unit, And an optical photographing part composed of a plurality of visual guidance parts for allowing the face of the examinee to be photographed in various directions. According to the present embodiment, the plurality of visual-guidance sections include a first visual-guidance section 111 disposed in substantially the same direction as the optical camera 110 described above with respect to the subject, A second visual guidance part 112 disposed to be deflected to either one side, for example, the left side, and a third visual guidance part 113 disposed to be deflected in the opposite direction.

Fig. 2 shows an example of the configuration of the optical photographing unit in the embodiment of Fig.

As described above, the optical photographing section includes one fixed optical camera 110 capable of continuous photographing or moving picture photographing, and a second optical camera 110 for guiding the subject's gaze during continuous photographing of the optical camera 110, The first, second, and third eyes guide portions 111, 112, and 113 for allowing the subject's face to be photographed in various directions. The first, second, and third eyes guiding portions 111, 112, and 113 may include red, yellow, and the like, which are advantageous for focusing the subject's gaze, and may be turned on or off for a predetermined period of time.

Meanwhile, the optical photographing unit may further include illumination for illuminating the face of the examinee. As a more specific example, the first illumination 121 illuminating the face on the side where the second visual guidance part 112 is disposed and the second illumination illuminating the face on the side where the third visual guidance part 113 is disposed 122). The first illumination light 121 and the second illumination light 122 may be controlled to emit light at the same time or in conjunction with the plurality of visual-guide portions, respectively.

The upper part 231 is connected to the lower part 232 of the lower part 232 and the upper part 231 of the lower part 232 is connected to the upper part 231 of the lower part 232, Can rotate in a predetermined range about the center axis (C). In this case, when the examinee changes the direction of the face according to the visual guidance part in a state of wearing the bite block 22, the head of the examinee can be stably supported so that the central axis does not move.

Hereinafter, the configuration of the apparatus according to the present invention will be described in greater detail by explaining the process of performing optical imaging with respect to the subject's face in the apparatus according to the present embodiment using the above-described configuration.

Fig. 3 schematically shows a state in which visible light data is acquired using the optical photographing unit illustrated in Fig.

Optical imaging of the patient ' s facial surface can be performed regardless of the post-radiographic follow-up. It is possible to acquire visible light data on the face front face first by using one optical camera 110 fixedly disposed on the front face of the subject when the optical pick-up is started. At this time, as shown in (a), the first gaze guidance unit 111 arranged in the same direction as the optical camera 110 is operated to fix the gaze of the examinee H in that direction and take a picture. During the optical pick-up, the control unit can interlock with the sight line guidance unit to guide the direction of the line of sight to the sound or the sound through the speaker 115, or to inform the sight line moving time and the like. The second and third line guiding portions 112 and 113 do not operate during the operation of the first line guiding portion 111. These can be operated in a manner that lights or flashes a colored lamp as described above.

Here, the second and third line-guiding portions 112 and 113 may be disposed in directions that are different from each other by predetermined angles? 1 and? 2 on the basis of the direction in which the optical camera 110 is installed. The predetermined angles? 1 and? 2 may be about 40 degrees to about 50 degrees, for example, 45 degrees. The predetermined angle may vary depending on the angle of view of the optical camera 110 or the main purpose of photography of the x-ray imaging apparatus. In a typical dental x-ray imaging apparatus, The necessary visible light data for the face of the examinee H can be obtained.

Next, as shown in (b), the control unit can stop the operation of the first visual guidance unit 111 and activate the second visual guidance unit 112. At this time, guidance through the speaker 115 may also be performed in parallel. When the second visual guidance unit 112 is operated, the examinee turns his / her head in the direction of the second visual guidance unit 112 from the direction of the first visual guidance unit 111 as indicated by an arrow. . The optical camera 110 can acquire visible light data photographed from various angles on the right side surface of the face of the examinee H by photographing several to several tens of frames per second.

When the direction of the face reaches the second eye guiding portion 112 in accordance with the eye movement of the examinee, the control portion then stops the operation of the second eye guiding portion 112 and, as shown in (c) The guide portion 113 can be operated. The optical camera 110 obtains the visible light data photographed at various angles on the left surface of the face of the examinee H when the examinee H turns his or her head and the direction of the eyes and the face rotate as shown by the arrows can do.

It is also possible to provide a guidance voice or sound through the speaker 115 in conjunction with the second visual guidance unit 112 or the third visual guidance unit 113 when the operation of the second visual guidance unit 112 or the third visual guidance unit 113 starts or ends. The X-ray imaging apparatus according to the present invention acquires visible light data obtained by photographing the face of the examinee H at various angles through the above-described process in the optical photographing section and combines this with the X-ray data obtained by the X- , A composite image in which three-dimensional information related to the skin surface is combined with three-dimensional information about the internal structure of the subject's head can be reconstructed and provided.

FIG. 4 schematically shows a state in which visible light data is acquired by using the optical photographing unit illustrated in FIG.

4A to 4C, the positions and operations of the optical camera 110 and the first to third visual guidance parts 111, 112 and 113 are the same as those described with reference to FIGS. 3A to 3C, same. The apparatus according to the present embodiment further includes a first illumination 121 provided adjacent to the second visual guidance member 112 and a second illumination 122 provided adjacent to the third visual guidance member 113. [ The positions of the first illumination 121 and the second illumination 122 are determined such that the side where the second visual guidance part 112 is disposed and the third visual guidance part 113 are arranged around the position of the optical camera 110 Respectively. The first and second lights 121 and 122 may be a continuous light source that continuously emits light during a predetermined time, for example, during shooting of the optical camera 110, or may be a flash light source emitting light at a shooting time, such as a strobe scope It is possible. In order to protect the eyesight of the examinee H, the two lights may be controlled to emit light in conjunction with the first to third eyes guiding portions 111, 112 and 113 as follows.

For example, in (a), when photographing the front face of a subject using the first eye guiding unit 111, the first light 121 and the second light 122 can be simultaneously operated. when the second gaze guidance unit 112 is operated to guide the subject's gaze to the subject, the first illumination unit 121 located at the adjacent position is not turned on, and the second gaze guidance unit 112 located at the side of the third gaze guidance unit 113, The light 122 may be turned on to illuminate the right side face of the examinee. In order to guide the examinee's gaze again by operating the third visual guidance part 113 in (c), the second illumination 122 is turned off and the first illumination 121 is turned on, . &Lt; / RTI > With such illumination control, it is possible to provide appropriate auxiliary light according to the direction of the subject's face to be photographed while protecting the visual acuity of the subject.

10:
20: handle frame 22: byte block
23: chin rest 40: X-ray photographing housing
60: base frame 61: chair
100: X-ray imaging device 110: Optical camera
111: first visual guidance unit 112: second visual guidance unit
113: Third eye guide part 121: First light
122: Second illumination

Claims

An X-ray photographing unit for acquiring X-ray data necessary for reconstructing a three-dimensional X-ray image of the subject's head, and an optical photographing unit for obtaining visible light data necessary for reconstructing a three-dimensional surface image of the subject's face,
The optical pick-
An optical camera for photographing a face portion of the subject at a fixed position;
A plurality of eye-guiding parts for guiding a line of sight of the examinee in the same direction as the optical camera; And
And a controller for guiding the subject's gaze in a direction different from the optical camera during continuous shooting of the optical camera so that the face of the subject is photographed at various angles.
X-ray imaging device.

The method according to claim 1,
Further comprising an image reconstruction unit for reconstructing the X-ray data acquired by the X-ray imaging unit and the visible light data acquired by the optical imaging unit to provide a composite image in which a 3D X-ray image of a subject and a 3D surface image are combined,
X-ray imaging device.

The method according to claim 1,
And a speaker for interlocking with the visual guidance unit and informing a time when the visual axis is moved by sound.

The method according to claim 1,
Wherein the plurality of eye-
A first eye guiding unit for guiding the eye of the examinee in the same direction as the optical camera;
A second eye guiding part disposed in a direction shifted by a predetermined angle from the direction of the optical camera to either side of the examinee; And
And a third eye guiding portion arranged in a direction shifted by a predetermined angle from the direction of the optical camera to the side opposite to the side where the second eye guiding portion is disposed,
X-ray imaging device.

5. The method of claim 4,
A first illumination disposed toward the subject's face from the side where the second sight guidance portion is disposed; And
And a second illuminator disposed toward the subject's face from the side where the third sight guiding unit is disposed,
X-ray imaging device.

6. The method of claim 5,
And the control unit controls the operation of the first illumination and the second illumination in cooperation with the first through third eyes guiding units.

The method according to claim 1,
An X-ray photographing housing installed to raise and lower relative to the head of the subject, the X-ray photographing housing covering an inner side surface and an outer side surface of a range in which the generator and the sensor unit rotate, And
And a handle frame having a chin rest supporting the head of the examinee,
Wherein the optical camera and the plurality of line-of-sight guiding portions are arranged to face the subject's face in the X-ray photographing section housing or the handle frame.

8. The method of claim 7,
Wherein the optical camera is installed in the handle frame, and the plurality of visual guidance portions are disposed in the X-ray imaging portion housing.