JP2015217137A - Portable 3D display X-ray imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable 3D display X-ray imaging apparatus which can acquire a clear three-dimensional image in an imaging place while securing low exposure.SOLUTION: A portable 3D display X-ray imaging apparatus comprises: an X-ray irradiation device consisting of a body including a controller controlling the exposure dose of an X-ray and irradiation timing, a support shaft erected from the body, an arm rotatably connected to the support shaft, a frame rotatably connected with the arm and two or more X-ray sources installed in the frame, receiving application of pulse high voltage and irradiating an imaging object with the X-ray; a digital type X-ray image sensor sensing the X-ray penetrating the imaging object; an image generation part generating three-dimensional image data on the basis of a plurality of pieces of two-dimensional image data with different imaging directions transmitted from the X-ray image sensor; and a 3D monitor displaying a three-dimensional image on the basis of the three-dimensional image data.

Description

  The present invention is portable, includes a plurality of X-ray sources, irradiates a subject to be photographed from different directions, photographs a plurality of two-dimensional images having different photographing directions of the subject, and uses them to The present invention relates to a portable 3D display X-ray imaging apparatus that generates and displays an image that can be stereoscopically viewed in the field (hereinafter also referred to as “three-dimensional image”, or simply “stereoscopic image”).

  In recent years, attention has been paid to small portable X-ray imaging apparatuses used for disasters, emergency in emergency, emergency medical examinations, and home care rounds.

  A plurality of manufacturers (for example, Kenko Tokina Co., Ltd.) sell portable X-ray imaging apparatuses. However, since both are two-dimensional X-ray images, they are as sharp as X-ray photographs. The distribution item is about 190 kg, and it is still difficult to say that it is small, and it is not possible to use it outdoors in a disaster area or accident site, or carry it for a doctor's home visit.

  On the other hand, although the CT image is clear, it is expensive and large-scale apparatus, so that it is difficult to install it by a private practitioner. It cannot be portable. And the exposure dose is also high. It is desirable for patients to obtain clear images with low exposure.

On the other hand, Patent Document 1 is disclosed as a portable radiographic imaging system. The invention of Patent Document 1 is to simultaneously solve various important problems of a portable X-ray imaging system, and has two X-ray sources 10a and 10b. The X-ray sources 10a and 10b are The connectors 25a and 25b are attached to the rails 27a and 27b of the horizontal bar 23 of the holder 14, and can be moved along the rails 27a and 27b by the moving mechanisms 28a and 28b. The X-ray source 10a is centered from one end of the horizontal bar 23. The X-ray source 10b is responsible for imaging in the range from the center to the other end. Further, the imaging control device 12 causes the X-ray source 10a and 10b to alternately repeat imaging and movement (the other performs imaging while one of the X-ray sources 10a and 10b is moving). 10b and the movement mechanisms 28a and 28b are controlled.

  In Patent Document 1, although two X-ray sources are provided, since they repeatedly alternate between slide and radiography, there is a difference in radiographing time, and the patient's movement during that period, in particular, pulse and respiration are affected. Even if a plurality of X-ray images in different directions are acquired and generated, a clear three-dimensional image cannot be obtained. In the first place, optimization of the X-ray source position, X-ray irradiation direction, and X-ray dose according to the imaging target and imaging site is not taken into consideration. From this point, it is impossible to obtain a clear three-dimensional image.

JP 2012-65768 A JP 2012-133897 A

http://beam-physics.kek.jp/bpc/procs/suzuki.pdf “Development and application of dry cell-powered micro-electron accelerator and high-energy X-ray source” 29 March 2009 Ryoichi Suzuki Industrial Technology Center Institute "

  Therefore, an object of the present invention is to provide a portable 3D display X-ray imaging apparatus that is portable and can acquire a clear three-dimensional image at an imaging location while ensuring low exposure.

In order to solve the above problems, the present invention provides:
(1)
Portable, equipped with a plurality of X-ray sources, irradiates X-rays from different directions, shoots a plurality of two-dimensional images with different shooting directions, and uses them to perform three-dimensional A portable 3D display X-ray imaging apparatus for generating and displaying an image,
A main body with a built-in controller for controlling the irradiation amount and irradiation timing of the X-ray, a support shaft erected from the main body, an arm rotatably connected to the support shaft, a frame rotatably connected to the arm, and An X-ray irradiator configured by two or more X-ray sources installed in the frame and irradiating the imaging object with X-rays upon application of a pulse high voltage;
A digital X-ray image sensor for sensing X-rays transmitted through the imaging object;
An image generating unit that converts the two-dimensional image data transmitted from the X-ray image sensor into different three-dimensional image data based on different imaging directions;
A 3D monitor for displaying a 3D image based on the 3D image data;
A portable 3D display X-ray imaging apparatus comprising:
(2)
The controller may vary one or more of a pulse high voltage value, a pulse width, and the number of pulses in accordance with the imaging target to vary the X-ray irradiation amount (1) A portable 3D display X-ray imaging apparatus described in 1.
(3)
The portable 3D display X-ray imaging apparatus according to (1), wherein the support shaft is a shaft that can be moved up and down.
(4)
The frame includes a distance meter for measuring a distance to the imaging target, and the shaft moves up and down based on a distance measurement result to the imaging target by the distance meter, and the height position of the X-ray irradiation unit The portable 3D display X-ray imaging apparatus according to (1), wherein the portable 3D display X-ray imaging apparatus is moved to an optimal position in accordance with the imaging target.
(5)
The frame includes a video camera that captures the shape of the imaging target, and the shaft moves up and down based on the captured image of the video camera, and the height position of the X-ray irradiation unit is set according to the imaging target. The portable 3D display X-ray imaging apparatus according to (1), wherein the portable 3D display X-ray imaging apparatus is moved to an optimal position.
(6)
The frame includes a video camera that captures the shape of the object to be imaged, the X-ray source rotates based on the image captured by the video camera, and the X-ray irradiation direction is set in an optimum direction according to the shape of the object to be imaged. The portable 3D display X-ray imaging apparatus according to (1), which is automatically set to
(7)
The portable 3D display X-ray imaging apparatus according to (1), wherein a collimator is provided at an emission port of the X-ray source, and the collimator is moved to change and control the irradiation direction of the X-ray.
(8)
The frame includes a video camera that captures the shape of the imaging target, and the frame expands and contracts in the direction of the adjacent X-ray source based on the captured image of the video camera, and the X-ray source is positioned in the lateral direction. The portable 3D display X-ray imaging apparatus according to (1), wherein the X-ray irradiation position is moved optimally according to the shape of the imaging target by moving.
(9)
The controller applies the pulse high voltage to all the X-ray sources within one cycle of the pulse and / or respiration of the patient who is the imaging target, so that the X-ray is irradiated to the imaging target, and the 3 The portable 3D display X-ray imaging apparatus according to (1), wherein the three-dimensional image data is generated.
(10)
The controller generates the pulse high voltage synchronized with the phase of the pulse or / and breathing cycle of the patient to be imaged, and applies the pulse high voltage to the X-ray source, so that X-rays are captured. The portable 3D display X-ray imaging apparatus according to (1), wherein the object is irradiated and the three-dimensional image data is generated.
(11)
The X-ray image sensor slides the imaging target range, acquires a plurality of two-dimensional image data of the imaging target, and the image generation unit acquires the three-dimensional image data of the imaging target based on the plurality of two-dimensional image data. The portable 3D display X-ray imaging apparatus according to (1), wherein:
(12)
The generation by the image generation unit is to generate three-dimensional image data according to an imaging condition and algorithm optimum for the imaging region stored in advance by selecting the imaging region to be imaged. The portable 3D display X-ray imaging apparatus according to (1).
(13)
The portable 3D display X-ray imaging apparatus according to (1), wherein the X-ray source includes a carbon nanostructure cold cathode X-ray tube.
(14)
The portable 3D display X-ray imaging apparatus according to (1), wherein the main body includes a telescopic leg that can be expanded and contracted in a horizontal direction.
It was.

  Since this invention is the above structure, the following effects are exhibited. Multiple X-ray sources, for example, cold cathode X-ray tubes, more specifically, carbon nanostructure triodes, are used as X-ray sources, and three-dimensional images are generated at the shooting location by taking digital X-ray images. A small portable 3D display X-ray imaging apparatus capable of displaying can be provided.

  As a result, it can be purchased at a low price, it is easy to move, the problem of installation space is solved, and high-precision X-ray stereoscopic imaging and medical examination are possible. In addition to medical examinations, it can be easily introduced at animal hospitals and rounds. Furthermore, it can be applied to non-destructive X-ray inspection of various devices for industrial use.

  Also, the X-ray irradiation unit moves up and down, and the X-ray source rotates and moves laterally, so that the X-ray dose and X-ray irradiation position / direction can be optimized according to the imaging region, and stored in advance. According to the set parameters, it can be automatically set. By optimizing, it leads to low exposure and long battery life.

  As a result, a clear X-ray image with low exposure can be taken and stereoscopic viewing is possible, so that highly accurate examination is possible. Lower exposure by setting and correcting the height position of the X-ray irradiation unit based on the measurement target range detected by the video camera provided in the frame and the distance measurement result of the X-ray irradiation unit and the imaging target by the distance meter. Thus, a highly accurate stereoscopic image can be displayed.

  In addition, a pulsed high voltage is applied to all cold-cathode X-ray tubes within one pulse or respiration cycle, for example within 0.5 seconds, or synchronized to the phase or / and respiration of the patient's pulse cycle. By applying the high pulse voltage, the affected part is irradiated with X-rays to generate a three-dimensional image, so that a clear three-dimensional image with little influence of movement of the object to be imaged, particularly pulse and respiration is displayed. Can do. The present invention can also be applied to a subject to be photographed with a certain rhythmic movement.

It is the schematic diagram (A) of the portable 3D display X-ray imaging apparatus which is this invention, and the schematic diagram (B) at the time of compact accommodation. It is a control block diagram of a portable 3D display X-ray imaging apparatus. It is explanatory drawing of a carbon nanostructure triode type cold cathode X-ray tube. It is an example of the use condition figure in the hospital room of the portable 3D display X-ray imaging apparatus which is this invention. It is an example of the use condition figure outside the hospital of the portable 3D display X-ray imaging apparatus which is this invention. It is explanatory drawing of the production | generation of the pulse high voltage synchronizing with the phase of the cycle of a pulse or / and a respiration. It is explanatory drawing at the time of sliding an X-ray image sensor and displaying a wide imaging | photography object as a stereo image.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

  As shown in FIG. 1, a portable 3D display X-ray imaging apparatus 1 that is an example of the present invention is portable, includes a plurality of X-ray sources, and irradiates an imaging target with X-rays 5p from different directions. Here, a portable 3D display X-ray that captures a plurality of two-dimensional X-ray images of the patient 10 (human body) in different imaging directions and generates and displays a three-dimensional image (stereoscopic image 8d) on the spot using them. An imaging apparatus, which includes an X-ray irradiation device 6, an X-ray image sensor 7, an image generation unit, and a 3D monitor 8a.

  The X-ray irradiation device 6 includes a main body 2, a support shaft 3, an arm 4, and an X-ray irradiation unit 5.

  The main body 2 includes a telescopic leg 2f that can extend and contract at the joint 2g in a direction that does not cause the X-ray irradiation device 6 to fall down due to the weight of the X-ray irradiation unit 5 from the lower part substantially parallel to the installation surface of the main body 2 (horizontal direction) The caster 2a provided at the bottom of the main body 2 and the telescopic legs 2f and the handle 2b attached to the top.

  The main body 2 can be easily moved by the casters 2a and the handle 2b. For example, two telescopic legs 2f are provided at the bottom of the main body 2 so as to be V-shaped, U-shaped, etc. in plan view, and the X-ray irradiation unit 5 is overlapped by extending the telescopic legs 2f during imaging. Now, it is possible to prevent the X-ray irradiation device 6 from overturning and to retract the telescopic leg 2f when the X-ray irradiation device 6 is moved so that the X-ray irradiation device 6 can be stored compactly. The extendable legs 2f may be connected to the main body 2 so as to be rotatable without extending or contracting, and may be expanded or contracted.

  Furthermore, on the upper surface, a 3D monitor and operation panel 2c that controls and adjusts the irradiation intensity, time, and number of X-rays 5p, and further displays a stereoscopic image 8d is provided. It also has a start on / off switch, a drive power supply switch, and the like.

  The 3D monitor and operation panel 2c may have a 3D monitor and an operation panel as separate bodies. On the other hand, instead of operating the 3D monitor / operation panel 2c, a control signal 8b may be transmitted from the PC 8 to each device of the main body 2 (wired or wireless communication).

  Inside the main body 2, a battery 2 d that is a drive power source of the portable 3D display X-ray imaging apparatus 1 is built-in. A commercial power source may be used instead of the battery 2d. They can be used together, and can be switched by a drive power source switch provided in the main body 2.

  The main body 2 further includes a controller 9 that controls the irradiation amount and irradiation timing of the X-ray 5p. Details of the controller 9 will be described later with reference to FIG.

  The support shaft 3 is composed of a shaft 3a that is erected from the main body 2 and can be moved up and down (inserted and removed from the main body 2), and a stopper 3b that locks and releases the shaft 3a. By providing the shaft 3a, the distance between the affected part and the X-ray irradiation part 5 can be set optimally. By providing the shaft 3a with a motor, it is possible to automatically control the height of the shaft and the position of the X-ray irradiation unit 5 (distance from the imaging target) according to a command from the controller 9.

  The arm 4 is rotatably connected to the upper end portion of the support shaft 3 (shaft 3a), and adjusts the direction of the X-ray irradiation unit 5. Here, the rotation part which is provided in the connection part of the two joints 4a and the shaft 3a, the connection part of the joint 4a and the joint 4a, and the connection part of the X-ray irradiation part 5, and connects each so that rotation is possible. 4b. By providing the rotating unit 4b with a motor, the angles of the arm 4 and the X-ray irradiation unit 5 can be automatically controlled by a command from the controller 9.

  The X-ray irradiation unit 5 includes a frame 5n that is rotatably connected to the other end of the arm 4, and four (first to fourth) X-rays that are rotatably fixed to the frame 5n and emit X-rays 5p. It consists of a carbon nanostructure triode cold cathode X-ray tube 5a, which is an example of a cold cathode X-ray tube as a source, a distance meter 5r, and a video camera 5t.

  The frame 5n is convexly curved upward, the four carbon nanostructure triode cold cathode X-ray tubes 5a are fixed at equal intervals, and the emission ports 5g of the respective X-rays 5p are to be imaged ( It is directed to the affected area. Further, an expansion / contraction part 5w is provided between the X-ray sources, and the expansion / contraction part 5w can expand and contract in the lateral direction in the direction of the adjacent X-ray source to slide the position of the X-ray source in the lateral direction. By providing the extendable portion 5w with a motor, the position of the X-ray source and the carbon nanostructure triode cold cathode X-ray tube 5a can be automatically controlled in the lateral direction by a command from the controller 9.

  The controller 9 automatically controls the height of the shaft 3a and the X-ray irradiation unit 5, the rotation angle of the X-ray source, and the position of the X-ray source in the lateral direction (the direction orthogonal to the direction connecting the imaging target and the frame 5n). By setting, it is possible to acquire a combination of two-dimensional images that is optimal for the imaging unit to be imaged.

  The X-ray source has an X-ray tube, for example, a carbon nanostructure triode cold cathode X-ray tube 5a, held by a mold, shielded by lead other than the irradiation direction, and has an exit port 5g. In the drawing, for convenience, the X-ray tube is shown as being exposed. When the X-ray source rotates, the X-ray tube also rotates. That is, the rotation of the X-ray source is synonymous with the rotation of the X-ray tube or the emission port 5g.

  The four (first to fourth) carbon nanostructure triode-type cold cathode X-ray tubes 5a are the same as shown in FIG. 3A, and are equidistant from the object to be imaged as shown in FIG. The internal structure is shown in FIG. In operation, the X-ray irradiation unit 5 is built in a box that is shielded by lead or the like except for the irradiation direction.

  Note that it is essential for the generation of the stereoscopic image 8d according to the present invention that two or more X-ray sources (X-ray tubes) are provided with parallax, and the accuracy of the stereoscopic image 8d increases every time three or four. Will improve. It is desirable to use four X-ray tubes from the viewpoint of miniaturization and image accuracy. The carbon nanostructure triode-type cold cathode X-ray tube 5a does not require preheating and can suppress standby power, and thus is particularly effective when increasing the number of X-ray tubes. Contributes to long-term use and light weight of the battery 2d.

  As shown in FIG. 5B, as the X-ray source, for example, there is a carbon nanostructure triode cold cathode X-ray tube (for example, an output of 70 kV to 120 kV), which is small and has a pulse high voltage. Upon application, electrons 5e generated at the carbon nanostructure cold cathode 5d on the cathode 5b side are irradiated onto the target 5f on the anode 5c side to generate X-rays 5p, which are emitted from the emission port 5g. By providing a motor in the X-ray source, the direction of the exit port 5g of the X-ray source can be automatically controlled by a command from the controller 9.

  In place of the rotation of the X-ray source, a collimator can be provided at the exit 5g of the X-ray source, and the X-ray direction can be changed and controlled by moving such as sliding or rotating. Similar to the movement of the X-ray source, the collimator can also automatically set the X-ray irradiation direction in the optimum direction according to the shape of the object to be imaged based on the image captured by the video camera. The collimator is also used to adjust the shape of the X-ray 5p.

  The principle and configuration of driving with a dry cell, a battery, and a commercial power source are described in detail in Patent Document 2 and Non-Patent Document 1. As shown in FIG. 2, the power supply (battery 2d) supplies negative and positive pulse high voltages 9a to the cathode 5b and the anode 5c of the carbon nanostructure triode cold cathode X-ray tube 5a, respectively. For the pulse high voltage 9a, the controller 9 varies the pulse high voltage value in accordance with the object to be imaged to vary the X-ray irradiation amount, thereby realizing optimum and low exposure.

  The distance meter 5r is provided in the frame 5n and is a laser distance meter or the like that measures the distance to the object to be imaged. The controller 9 automatically controls the distance meter 5d based on the distance measurement result (distance information 5s in FIG. 2). A signal 9d (FIG. 2) is generated and sent to the drive device of the shaft 3a, and the shaft 3a moves up and down to move the height position of the X-ray irradiation unit 5 to the optimum position according to the imaging target (part). Can be used for

  The video camera 5t is provided in the frame 5n and photographs the shape of the photographing target. The video camera 5t then captures the object to be imaged (patient 10), recognizes the shape of the object to be imaged in the visual field 5y, and based on the image (shape information 5u in FIG. 2), the controller 9 automatically controls the signal 9d. (FIG. 2) is generated, a command is sent to each device, and each device is automatically controlled.

  For example, the height of the shaft and the angle of the arm 4 are optimally automatically set so as to adjust the height of the X-ray irradiator 5 in order to capture the optimal range of the imaging target, and the X-ray source rotates to capture the imaging target. By automatically setting the irradiation direction of the X-rays 5p in the optimum direction according to the position and shape of the X-ray, the X-ray source is moved in the horizontal direction by expanding and contracting the expansion / contraction part 5w of the frame 5n, so that the shape of the object to be imaged is obtained. Accordingly, it can be used to optimize the X-ray irradiation position.

  Further, the controller 9 automatically controls the X-ray dose, the value of the pulse high voltage 9a, the pulse width, and the number of pulses that are optimal for the imaging target and the imaging site, and ensures a low exposure of the imaging target, while the sharp image of the stereoscopic image 8d is obtained. It can also be displayed.

  The video from the video camera can also be used to grasp the state of breathing and the movement of the subject.

  As shown in FIG. 1 (B), the X-ray irradiation apparatus 6 thus configured houses the shaft 3a in the main body 2 when not in use or further moves, and the arm 4 and the X-ray irradiation unit 5 are connected. It can be turned, bent and folded compactly.

  The X-ray image sensor 7 is disposed below the imaging target (affected part of the patient 10), and irradiates the X-ray 5p from above, so that the X-ray 5p transmitted through the imaging target (affected part) is a digital two-dimensional image. It is detected as data 7a (base data of three-dimensional X image data), and is transmitted to the image generation unit by wired or wireless communication.

  Examples of the X-ray image sensor 7 include a scintillator, a CCD, a CMOS, and a CdTe semiconductor.

  The image generation unit digitally generates three-dimensional image data 9c based on a plurality of two-dimensional image data 7a transmitted from the X-ray image sensor 7 and having different photographing directions. As shown in FIG. This is performed by the image generation software 9b stored in the recording unit of the controller 9 or the image generation software stored in the PC 8.

  Here, description will be made assuming that the image is generated by the image generation software 9b incorporated in the controller 9. The image generation software 9b can use a conventional CT technique or a digital three-dimensional technique that generates a two-way digital X-ray image in a stereoscopic manner. The generation of the stereoscopic image 8d includes correction, synthesis, and reconstruction of the two-dimensional image data 7a, the three-dimensional image data 9c, and the stereoscopic image 8d.

  The 3D monitor 8a is provided in the PC 8 or the main body 2 (3D monitor / operation panel 2c), acquires the 3D image data 9c generated by the image generation unit (wired or wireless communication), and uses the 3D image data 9c as a basis. Are displayed as a three-dimensional image (stereoscopic image 8d).

  Here, the 3D monitor 8a is a display capable of three-dimensional display of the PC 8. It is also possible to display a plurality of stereoscopic images 8d of a plurality of combinations corresponding to the X-rays 5p irradiated from the four carbon nanostructure triode cold cathode X-ray tubes 5a. In comparison, the state of the affected part can be grasped in detail.

  Next, the controller 9 will be described in detail with reference to FIG. The controller 9 includes a computer (including a CPU) such as a microcomputer, a pulse high voltage generation circuit, a recording unit, and image generation software 9b stored in the recording unit.

  The carbon nanostructure triode cold cathode X-ray tube 5a is driven by the high voltage pulse high voltage 9a generated by the pulse high voltage generation circuit of the controller 9, and emits X-rays 5p. The first to fourth carbon nanostructure triode cold cathode X-ray tubes 5a sequentially irradiate X-rays 5p by applying a pulse high voltage 9a.

  The pulse high voltage 9a is stored for each imaging region stored in advance so as to satisfy imaging conditions (voltage value, current value, pulse width, number of pulses, distance between the imaging object and the X-ray irradiation unit, etc.) according to the region to be imaged. Based on the optimal parameters of The pulse high voltage 9a is desirably applied to all X-ray sources within one cycle of the pulse 10a and / or the breath 10b of the patient 10 to be imaged and within 0.5 seconds. By doing so, a clearer stereoscopic image 8d can be obtained in a short time.

  The pulse high voltage 9a is generated in synchronization with the phase of the pulse 10a or / and the breathing 10b of the patient 10 (see FIG. 6), that is, calculated and controlled by a computer, and the carbon nanostructure tripolar type. It is sequentially sent to the cold cathode X-ray tube 5a.

  As a result, the two-dimensional image data 7a is acquired in synchronization with the phase of the pulse 10a or / and the breath 10b of the patient 10, and is acquired by eliminating the influence of the pulse 10a or / and the breath 10b. Become.

  With such a method, even if a sufficient current value to the cold cathode tube cannot be secured in a short time, even if shooting for a long time (several seconds), the influence on heartbeat and breathing is reduced and clear. 3D image data for displaying a stereoscopic image 8d can be generated.

  The stereoscopic image 8d is processed into data that can be stereoscopically viewed by the image generation software 9b stored in the recording unit of the controller 9 based on the two-dimensional image data 7a transmitted from the X-ray image sensor 7. Then, it is transmitted to the PC 8 as three-dimensional image data 9c and can be observed as a three-dimensional image (stereoscopic image 8d) on the 3D monitor 8a.

  As illustrated in FIG. 2, the stereoscopic image capturing pair includes a stereoscopic image capturing pair A corresponding to the X-ray 5 p of the first and second carbon nanostructure triode cold cathode X-ray tube 5 a, the second and second stereo image capturing pairs. 3D image capturing pair B corresponding to 3 X-rays 5p, 3D image capturing pair C corresponding to third and fourth X-rays 5p, and the like can be exemplified.

  In addition, it is possible to form a stereoscopic image photographing pair by the first and third or fourth combination, and the second and fourth combination. Furthermore, it is also possible to generate the three-dimensional image data 9c by incorporating the two-dimensional image data 7a in the direction different from the three-dimensional image data 9c generated from the two-dimensional two-dimensional image data 7a.

  Thus, by providing the carbon nanostructure triode cold cathode X-ray tube 5a as a plurality of X-ray sources, the X-ray 5p of the plurality of carbon nanostructure triode cold cathode X-ray tubes 5a is supported. It is possible to generate various three-dimensional images 8d.

  A three-dimensional image (stereoscopic image 8d) by a combination of various two-dimensional image data can be displayed side by side on the 3D monitor 8a. From these three-dimensional images, the doctor can select a three-dimensional image in a suitable direction according to the affected area, or compare it with other three-dimensional images to observe the affected area in detail.

  On the other hand, according to the imaging part to be imaged, the pulse high voltage 9a is sent only to the necessary cold cathode X-ray tube or the photographed two-dimensional image data 7a is selected according to the algorithm stored in the image generation unit in advance. It is also possible to generate three-dimensional image data.

  The algorithm corresponding to the region is selected by the doctor from the 3D monitor / operation panel 2c, the PC 8 operation, or the video camera image according to the imaging region, and is sent to the controller 9 as a control signal 8b and stored. Selected algorithm.

  According to the selected algorithm, the two-dimensional image data 7a is acquired and selected by an optimal combination of imaging parts, and three-dimensional image data 9c is generated. Based on the three-dimensional image data 9c, the stereoscopic image 8d is displayed on the 3D monitor 8a.

  Next, a specific usage example of the portable 3D display X-ray imaging apparatus 1 according to the present invention will be described with reference to FIGS.

  As shown in FIG. 4, an example of using a portable 3D display X-ray imaging apparatus in the hospital will be described. Since the portable 3D display X-ray imaging apparatus 1 according to the present invention is a small and low-exposure portable type, when a doctor makes a round-trip to the hospital room 12, the doctor 10 brings it to the hospital room and lies on the bed 12a. X-ray imaging of the affected area is possible.

  Then, based on a plurality of two-dimensional image data 7a having different shooting directions, three-dimensional image data 9c can be generated on the spot and confirmed as a stereoscopic image 8d on the 3D monitor 8a. For the stereoscopic image 8d, the PC 8 acquires the three-dimensional image data 9c by communication 8e with the main body 2, or acquires the two-dimensional image data 7a by communication with the main body 2, and the three-dimensional image data 9c by the image generation software of the PC 8. Is generated and displayed on the 3D monitor 8a.

  First, the portable 3D display X-ray imaging apparatus 1 according to the present invention is carried into the hospital room 12, the X-ray image sensor 7 is placed under the affected area, and then the X-ray irradiation apparatus 6 is moved to the vicinity of the affected area to support the support shaft 3. Is adjusted to an optimum height, and the arm 4 and the X-ray irradiation unit 5 are rotated to an optimum position for the affected part. These are determined in advance for the imaging region, and can be automatically controlled by parameters stored in the controller 9. The same applies to FIG. Subsequently, the doctor or the operator 11 operates the PC 8 or the 3D monitor / operation panel 2c to irradiate the X-ray 5p from the X-ray irradiation unit 5. When the X-ray irradiation apparatus 6 is operated by the PC 8, as shown in FIG. 4, in addition to wired communication, a control signal 8b is sent to the X-ray irradiation apparatus 6 by wireless communication 8e, and the X-ray irradiation apparatus 6 is It can also be operated.

  As a result, a digital X-ray image is acquired by the X-ray image sensor 7, and a doctor can observe the stereoscopic image 8d on the 3D monitor 8a to confirm the detailed state of the affected area. By doing so, the doctor can accurately determine the subsequent treatment and the like.

  As shown in FIG. 5, an example of using the portable 3D display X-ray imaging apparatus 1 according to the present invention outside a hospital, for example, at a patient's home or outdoors will be described.

  Since the portable 3D display X-ray imaging apparatus 1 according to the present invention is small and portable with low exposure, the doctor brings the patient 10 to his / her home when the patient 10 visits his / her home, and the patient 10 is there. X-ray imaging can be performed.

  Then, based on a plurality of two-dimensional image data 7a having different shooting directions, three-dimensional image data 9c can be generated on the spot and confirmed as a stereoscopic image 8d on the 3D monitor 8a.

  A bed for the patient 10 may not be prepared at home or outdoors 13. If at home, the patient may lie on the futon 13a, etc., but since the shaft 3a expands and contracts up and down, it is optimal for the patient 10 lying on the floor by contracting the shaft 3a. The height of the X-ray irradiation unit 5 can be set.

  First, the portable 3D display X-ray imaging apparatus 1 according to the present invention is carried into a place where the patient 10 is present, the X-ray image sensor 7 is placed under the affected part, and then the X-ray irradiation apparatus 6 is moved to the vicinity of the affected part. The support shaft 3 is slid and adjusted to the optimum height, and the arm 4 and the X-ray irradiation unit 5 are rotated to the optimum position for the affected part. Subsequently, the doctor or the operator 11 operates the PC 8 or the 3D monitor / operation panel 2c to irradiate the X-ray 5p from the X-ray irradiation unit 5.

  As a result, a digital X-ray image is acquired by the X-ray image sensor 7, and a doctor can observe the stereoscopic image 8d on the 3D monitor 8a to confirm the detailed state of the affected area. By doing so, the doctor can accurately determine the subsequent treatment, the transfer location, and the like.

  Next, with reference to FIG. 7, a method for generating a wide range of stereoscopic images 8d to be photographed will be described. As shown in FIG. 7A, in order to acquire a wide range of stereoscopic images 8d to be photographed, a detection device 7b incorporating an X-ray image sensor 7 that slides in the horizontal direction is used.

  As shown in the schematic cross-sectional view of FIG. 7B, the detection device 7b includes a box 7c, a rail 7d that guides the movement of the X-ray image sensor 7, a built-in box 7c, and is positioned on the rail 7d. It consists of a moving X-ray image sensor 7 and a drive source for moving the X-ray image sensor 7.

  The box 7c is a material that transmits X-rays 5p. The box 7c includes the X-ray image sensor 7 therein, and includes a moving mechanism for the X-ray image sensor 7, and is placed under the imaging target.

  The moving mechanism includes a rail 7d, a driving source such as a motor and a spring for moving the X-ray image sensor 7, and a power source serving as a driving force for the driving source. The power source may be the battery 2d of the main body 2.

  When the imaging target is a wide range, when the X-ray image sensor 7 is small, a detection device 7b that slides in the horizontal direction may be employed. Further, by reducing the area of the X-ray image sensor 7, the manufacturing cost can be kept low, and a highly accurate stereoscopic image 8d equivalent to an image sensor having a large area of the X-ray detection unit can be generated. .

DESCRIPTION OF SYMBOLS 1 Portable 3D display X-ray imaging apparatus 2 Main body 2a Caster 2b Handle 2c 3D monitor and operation panel 2d Battery 2f Telescopic leg 2g Joint 3 Support axis 3a Shaft 3b Stopper 4 Arm 4a Joint 4b Rotating part 5 X-ray irradiation part 5a Carbon nano Structure tripolar cold cathode X-ray tube 5b Cathode 5c Anode 5d Carbon nanostructure cold cathode 5e Electron 5f Target 5g Outlet 5h Middle pole 5i Hole 5k Ground 5n Frame 5p X-ray 5r Distance meter 5s Distance information 5t Video camera 5u Shape information 5w Expansion / contraction part 5y Field of view 6 X-ray irradiation device 7 X-ray image sensor 7a Two-dimensional image data 7b Detection device 7c Box 7d Rail
8 PC
8a 3D monitor 8b control signal 8d stereoscopic image 8e communication 9 controller 9a pulse high voltage 9b image generation software 9c 3D image data 9d automatic control signal 10 patient 10a pulse 10b breathing 11 doctor or operator 12 hospital room 12a bed 13 home or outdoors 13a Futon

Claims (14)

Portable, equipped with a plurality of X-ray sources, irradiates X-rays from different directions, shoots a plurality of two-dimensional images with different shooting directions, and uses them to perform three-dimensional A portable 3D display X-ray imaging apparatus for generating and displaying an image,
A main body with a built-in controller for controlling the irradiation amount and irradiation timing of the X-ray, a support shaft erected from the main body, an arm rotatably connected to the support shaft, a frame rotatably connected to the arm, and An X-ray irradiator configured by two or more X-ray sources installed in the frame and irradiating the imaging object with X-rays upon application of a pulse high voltage;
A digital X-ray image sensor for sensing X-rays transmitted through the imaging object;
An image generating unit that converts the two-dimensional image data transmitted from the X-ray image sensor into different three-dimensional image data based on different imaging directions;
A 3D monitor for displaying a 3D image based on the 3D image data;
A portable 3D display X-ray imaging apparatus comprising: 2. The X-ray irradiation amount is variable, wherein the controller varies at least one of a pulse high voltage value, a pulse width, and a pulse number according to the imaging target. A portable 3D display X-ray imaging apparatus described in 1. The portable 3D display X-ray imaging apparatus according to claim 1, wherein the support shaft is a shaft that can be moved up and down. The frame includes a distance meter for measuring a distance to the imaging target, and the shaft moves up and down based on a distance measurement result to the imaging target by the distance meter, and the height position of the X-ray irradiation unit The portable 3D display X-ray imaging apparatus according to claim 1, wherein the portable 3D display X-ray imaging apparatus is moved to an optimal position in accordance with the imaging target. The frame includes a video camera that captures the shape of the imaging target, and the shaft moves up and down based on the captured image of the video camera, and the height position of the X-ray irradiation unit is set according to the imaging target. The portable 3D display X-ray imaging apparatus according to claim 1, wherein the portable 3D display X-ray imaging apparatus is moved to an optimal position. The frame includes a video camera that captures the shape of the object to be imaged, the X-ray source rotates based on the image captured by the video camera, and the X-ray irradiation direction is set in an optimum direction according to the shape of the object to be imaged. The portable 3D display X-ray imaging apparatus according to claim 1, wherein the portable 3D display X-ray imaging apparatus is automatically set. The portable 3D display X-ray imaging apparatus according to claim 1, wherein a collimator is provided at an exit of the X-ray source, and the collimator is moved to change and control the irradiation direction of the X-ray. The frame includes a video camera that captures the shape of the imaging target, and the frame expands and contracts in the direction of the adjacent X-ray source based on the captured image of the video camera, and the X-ray source is positioned in the lateral direction. The portable 3D display X-ray imaging apparatus according to claim 1, wherein the X-ray irradiation position is optimally moved according to the shape of the imaging target by moving. The controller applies the pulse high voltage to all the X-ray sources within one cycle of the pulse and / or respiration of the patient who is the imaging target, so that the X-ray is irradiated to the imaging target, and the 3 The portable 3D display X-ray imaging apparatus according to claim 1, wherein dimensional image data is generated. The controller generates the pulse high voltage synchronized with the phase of the pulse or / and breathing cycle of the patient to be imaged, and applies the pulse high voltage to the X-ray source, so that X-rays are captured. The portable 3D display X-ray imaging apparatus according to claim 1, wherein the object is irradiated and the three-dimensional image data is generated. The X-ray image sensor slides the imaging target range, acquires a plurality of two-dimensional image data of the imaging target, and the image generation unit acquires the three-dimensional image data of the imaging target based on the plurality of two-dimensional image data. The portable 3D display X-ray imaging apparatus according to claim 1, wherein: The generation by the image generation unit is to generate three-dimensional image data according to an imaging condition and algorithm optimum for the imaging region stored in advance by selecting the imaging region to be imaged. The portable 3D display X-ray imaging apparatus according to claim 1. The portable 3D display X-ray imaging apparatus according to claim 1, wherein the X-ray source includes a carbon nanostructure cold cathode X-ray tube. The portable 3D display X-ray imaging apparatus according to claim 1, wherein the main body includes a telescopic leg that can be expanded and contracted in a horizontal direction.