JP4616031B2 - X-ray equipment - Google Patents

Description

  The present invention relates to an X-ray imaging apparatus that obtains a captured image by irradiating a subject with X-rays and detecting transmitted X-rays with an X-ray flat panel detector.

  When imaging a subject with a large axial length using a conventional X-ray imaging apparatus, for example, when performing long imaging such as a spine or a leg on a supine or stand-up imaging table, A long X-ray film was placed at a position opposite to the X-ray source, the subject was irradiated with X-rays from the X-ray source, and the X-ray film was exposed with transmitted X-rays, and images could be taken at once. . Recently, in this type of X-ray imaging apparatus, an X-ray flat panel detector known as FPD has been used instead of an X-ray film, and this X-ray flat panel detector is usually about 300 mm wide and 400 mm long, for example. Therefore, when the X-ray imaging region of the subject becomes larger in the axial direction, it cannot be captured at once. Therefore, when imaging a subject having a large axial length, as shown in FIG. 8, the X-ray source 6 and the X-ray flat detector 5 face each other in a substantially vertical direction with the subject sandwiched therebetween. The imaging is performed, and then the X-ray source 6 and the X-ray flat detector 5 are kept facing each other while being shifted in the axial direction of the subject, and the second imaging position is different from the first one. The second imaging was performed, and thereafter, the image processing unit was configured to obtain a captured image synthesized in the axial direction based on the transmitted X-ray data detected by the X-ray flat panel detector 5 at each imaging position.

  However, in the conventional X-ray imaging apparatus, imaging is performed at a plurality of imaging positions shifted in the axial direction of the subject without changing the facing relationship between the X-ray source and the X-ray flat panel detector. When the captured images were synthesized, the captured images had a sense of incongruity at the connecting portions existing in the axial direction of the subject.

  An object of the present invention is to capture a photographed image that can photograph a subject having a large axial length using a single X-ray flat panel detector and that eliminates a sense of incongruity at a joint portion that exists in the axial direction of the subject. An object is to provide an X-ray imaging apparatus that can be obtained.

The present invention includes an X-ray source that irradiates a subject with X-rays, an X-ray flat panel detector that is disposed opposite to the X-ray source with the subject interposed therebetween and detects transmitted X-rays of the subject, and the subject wherein the body axis direction of the specimen by moving the X-ray source and the X-ray flat panel detector, wherein the X-ray imaging apparatus having a moving mechanism portion which is adapted to the subject to obtain a photographed image of a plurality of imaging regions ,
Control means for controlling the moving mechanism unit so that X-rays from the X-ray source have substantially the same X-ray incident angle with respect to the X-ray flat panel detector at a connecting portion of the plurality of imaging regions;
There is disclosed an X-ray imaging apparatus comprising: means for obtaining a long-length captured image by connecting captured images of the plurality of imaging regions using information of a connection portion of the plurality of imaging regions.

Furthermore, the present invention provides the X-ray imaging apparatus, wherein the control means controls the moving mechanism unit to move to the plurality of imaging positions without changing the X-ray center position of the X-ray source. Disclose.

  The X-ray imaging apparatus according to the present invention, for example, when performing imaging at the second imaging position shifted in the body axis direction of the subject after imaging at the first imaging position, Since the facing relationship between the X-ray source and the X-ray flat panel detector can be adjusted by the moving mechanism control means so that the X-ray incident angles at the connecting portions existing in the axial direction are substantially the same, When combining the above data into a long captured image, there is no sense of incongruity in the joints existing in the body axis direction of the subject, and a single X-ray flat panel detector is used to Shooting can be performed. That is, in the conventional X-ray imaging apparatus, it is possible to eliminate a sense of incongruity caused by a large difference in the X-ray incident angle at the connecting portion existing in the axial direction of the subject.

  According to a second aspect of the present invention, there is provided an X-ray imaging apparatus according to the present invention, in which an X-ray center position of an X-ray source is seen by using a moving mechanism section provided for variously driving an X-ray source and a control section thereof. Since the X-ray source moves to a plurality of imaging positions with almost no change, the X-ray incident angles at the connecting portions of the plurality of imaging regions can be made to substantially coincide within the range of movement of the X-ray source by the conventional moving mechanism unit. It is possible to eliminate a sense of incongruity in the connecting portion existing in the body axis direction of the subject, and it is possible to image a subject having a long axial length using one X-ray flat panel detector.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing an X-ray imaging apparatus according to an embodiment of the present invention.
The illustrated X-ray imaging apparatus is known as a general fluoroscopic imaging table, and a movable top 3 on which a subject 2 is placed is disposed at the center of the main body 1, and is substantially orthogonal to the top 3. The X-ray source column 4 is arranged so as to do this. X-ray source strut 4, the X-ray source 6 for irradiating X-rays is disposed above portion to the subject 2, the throttle device 7 placed on the subject 2 side of the X-ray source 6, subject 2 The X-ray plane detector 5 is disposed opposite to the X-ray source 6 with the X-ray source 6 interposed therebetween. The main body 1 is supported so as to be rotatable by a predetermined angle. Such an X-ray source support column 4 and the top plate 3 are configured to perform various movements by a moving mechanism unit for general imaging. For example, the X-ray source support column 4 has an image system longitudinal movement that moves the subject 2 in the body axis direction, a vertical movement that moves in the vertical direction, and an inclination angle with respect to the subject 2 by the moving mechanism unit. The moving mechanism unit is configured so as to be capable of various movements such as an X-ray source oblique insertion movement that enables imaging of the image, and so that the moving mechanism unit control means performs the above-described movements in response to individual commands from a console (not shown). Is controlling. In addition, the top plate 3 is also configured to be capable of various movements such as horizontal top plate vertical movement, top plate horizontal movement, top plate up-and-down movement, top plate up / down movement, and similarly according to individual commands from the console. The moving mechanism unit control means controls the moving mechanism unit so as to perform the above-described movements.

FIG. 3 is a block configuration diagram of a drive system that performs various movements of the X-ray source column 4 and the top 3.
In addition to the operation handle and switches for individually supporting the various movements described above, the switch for turning on / off the X-ray irradiation from the X-ray source 6, and the control switch for the diaphragm device 7, A mode switching unit is configured as a touch button switch of the display unit. By operating the above-described operation handle and switches, the image system vertical movement mechanism unit 9a that moves the X-ray source support column 4 in the body axis direction of the subject 2 has an inclination angle with respect to the subject 2. X-ray source obliquely moving mechanism that enables imaging of the image, other moving mechanisms such as a vertically moving mechanism that moves the same in the vertical direction, and top plate vertical movement that drives the top 3 in the horizontal direction The mechanism part, the top plate lateral movement mechanism part that drives the part in the horizontal direction, the top plate up / down movement mechanism part that lifts and lowers the part, and the top plate up / down movement mechanism part of the part can be moved individually. A mechanism unit 9 is configured.

  Further, the console 8 includes a mode switching unit as a touch panel switch of the display unit, for example, and a long shooting mode 11a and other modes 11b and 11c are assigned to the mode switching unit. When the long shooting mode 11a is selected from the mode switching units, the moving mechanism unit control unit 10 that has the connecting unit adjustment function 12 and drives and controls the moving mechanism unit 9 to a plurality of shooting positions is operated. It is configured. This moving mechanism unit control means 10 shifts the X-ray source support column 4 in the body axis direction of the subject 2 corresponding to the long imaging mode 11a by predetermined various moving mechanism units selected from the moving mechanism unit 9. The connection adjustment function 12 controls the X-ray incidence angles of the connection portions existing between the plurality of imaging positions shifted in the body axis direction of the subject 2 to be substantially equal. The moving mechanism unit control means 10 and the connecting portion adjustment function 12 are integrally configured by a program so as to cooperate in advance.

  For example, when the long imaging mode 11a is selected for imaging the spine or leg of the subject 2, the selection signal of the long imaging mode 11a is given to the moving mechanism control unit 10, and this moving mechanism control unit Reference numeral 10 denotes a plurality of imaging positions in the body axis direction of the subject 2 by drivingly controlling the image system vertical movement 9a and the X-ray source oblique movement 9b according to a preset program. However, during the movement from one photographing position to another photographing position, a photographing instruction from the console 8 can be given.

  In order to simplify the description, in the following, when the long imaging mode 11a is selected for imaging the spine and legs of the subject 2, two imaging positions shifted in the body axis direction of the subject 2 respectively. A description will be given assuming that shooting is performed. First, as shown in FIG. 5, the X-ray source support column 4 is moved to the first imaging position and the state is changed by the moving mechanism unit control means 10 having the joint adjustment function 12, and the first imaging is performed. Thereafter, the moving mechanism control means 10 moves the X-ray source support column 4 to the second imaging position and changes the state to perform the second imaging. Thereafter, the image processing unit (not shown) transmits the transmitted X-ray data acquired from the X-ray flat panel detector 5 in the first imaging and the transmitted X-ray acquired from the X-ray flat panel detector 5 in the second imaging. A long composite photographed image is obtained by combining the data.

  The moving mechanism control means 10 that moves and changes the state of the X-ray source column 4 to the first imaging position and then moves and changes the state of the X-ray source column 4 to the second imaging position is various. Configuration is conceivable. For example, an X-ray diagnostic apparatus known as a general fluoroscopic imaging table as shown in FIG. 1 has a video system vertical movement mechanism unit 9a that drives the X-ray source support column 4 in the horizontal direction to enable various imaging and the like. And a moving mechanism section control means having a connecting section adjusting function 12 using these movements. 10 can be configured, or the movement of the top plate 3 can be added thereto. The X-ray source column 4 is driven by the moving mechanism control means 10 having the connecting portion adjusting function 12 to control the first imaging position shown in FIG. 1 and the second imaging position shown in FIG. Hold. That is, as shown in FIG. 1, the oblique angle moving mechanism 9b of the moving mechanism 9 rotates a predetermined angle clockwise about the rotation axis of the X-ray source column 4 to obtain the first imaging position. When driving from the first imaging position to the second imaging position shown in FIG. 2, the X-ray source support column 4 is slightly moved to the foot side of the subject 2 by the video system vertical movement mechanism unit 9a. The X-ray source moving unit 4b rotates the X-ray movable unit 4 counterclockwise by a predetermined angle.

At this time, the moving mechanism control means 10 having the connecting portion adjusting function 12 rotates the X-ray source column 4 by a predetermined angle in the counterclockwise direction from the first imaging position only by the X-ray source oblique movement mechanism 9b. Thus, instead of obtaining the second imaging position, the X-ray source support column 4 is moved slightly to the foot side of the subject 2 by the image system vertical movement 9a, and the X-ray source oblique angle moving mechanism unit 9b. The second imaging position is obtained by the movement of rotating the X-ray source column 4 by a predetermined angle in the counterclockwise direction. These two movements may be reversed in order, but in any case, due to the two movements, the X-ray center 6a of the X-ray source 6 in the X-ray source column 4 appears to be almost as shown in FIG. I try not to move. Therefore, the X-ray incident angle α at the connecting portion between the first imaging section and the second imaging section shown in FIG.

FIG. 4 is a flowchart showing an operation when the above-described X-ray imaging apparatus performs imaging in the long imaging mode.
Now, assuming that the long photographing mode 11a is selected on the console 8 in step S1, the moving mechanism unit control means 10 having the connecting portion adjustment function 12 in step S2 after performing positioning through the front and rear thereof, An imaging position switching signal to the first imaging position is given to the video system vertical movement mechanism section 9a and the X-ray source oblique movement mechanism 9b of the movement mechanism section 9. The video system vertical movement mechanism 9a and the X-ray source oblique movement mechanism 9b that have received this signal are driven and controlled in accordance with a program set in advance by the movement mechanism control means 10 having the joint adjustment function 12. In step S <b> 3, the video system vertical movement mechanism unit 9 a moves the X-ray source support column 4 to the head side along the body axis of the subject 2, and the X-ray source oblique movement mechanism 9 b moves the subject 2. The X-ray source support column 4 is rotated clockwise by a predetermined angle on a vertical plane including the body axis, and is held at the first imaging position shown in FIG. At this time, the X-ray flat panel detector 5 connected to the lower portion of the X-ray source column 4 rotates slightly because the rotation axis of the X-ray source column 4 is located in the vicinity of the pole as described above. 6 is exactly opposite.

  Thereafter, if it is detected in step S4 that the X-ray source column 4 has correctly held the first imaging position, a first imaging command is given from the console 8 in step S5. Then, after X-rays are irradiated from the X-ray source 6 and transmitted through the subject 2, the transmitted X-rays are detected by the X-ray flat detector 5, and the digital data obtained by the X-ray flat detector 5 is processed. Collected by. At this time, as shown in FIG. 5, the X-ray incident angle on the connecting portion side in the first imaging section is α.

  Subsequently, at step S6, the movement mechanism unit control means 10 gives a shooting position switching signal to the second shooting position when the completion of the first shooting is detected. This second shooting position switching signal may be programmed to be automatically output by the moving mechanism control means 10 or other means after detecting the completion of the first shooting in step S6. However, the operator may give from the console 8. In response to the second shooting position switching signal in step S7, the moving mechanism control means 10 having the joint adjusting function 12 drives and controls the moving mechanism 9. In step S8, the video vertical moving mechanism 9a is controlled. The X-ray source 6 is slightly moved to the foot side of the subject 2 on a vertical plane including the body axis of the subject 2, and the X-ray source oblique movement mechanism 9 b moves the X-ray source 4 counterclockwise. The second imaging position shown in FIG. At this time, the X-ray flat panel detector 5 accurately opposes the X-ray source 6 even at the second imaging position in conjunction with the movement of the X-ray source column 4.

  As a result, the X-ray center 6a of the X-ray source 6 is almost in the same position as if it does not appear to move, and the X-ray source column 4 is counterclockwise around the X-ray center 6a as shown in FIG. It becomes the same state as rotating by a predetermined angle in the direction. Therefore, as can be seen from FIG. 5, the X-ray incident angle α of the connecting portion in the first imaging section and the second imaging section is the same as in the first imaging.

Thereafter, if the X-ray source 6 and the X-ray plane detector 5 accurately hold the second imaging position in step S9, a second imaging command is given from the console 8 in step S10. Then, after X-rays are irradiated from the X-ray source 6 and transmitted through the subject 2, the transmitted X-rays are detected by the X-ray flat detector 5, and the digital data obtained by the X-ray flat detector 5 is processed. Collected by. Thereafter, if it is detected in step S11 that the second shooting has been completed, the shooting in the long shooting mode 11a is completed.

  Thereafter, the processing means can obtain a captured image of the entire imaging region of the subject 2 based on the digital data acquired at the time of the first imaging and the digital data acquired at the time of the second imaging. At this time, as shown in FIG. 5, the X-ray incident angles α at the connecting portion between the first imaging section and the second imaging section existing in the body axis direction of the subject 2 are substantially equal. For this reason, when the digital data detected at the first photographing position and the second photographing position are combined to form a photographed image of one photographing part, as shown in FIG. The sense of incongruity of the photographed image that has conventionally occurred due to the difference in the X-ray incident angle is eliminated, and an easy-to-see photographed image can be obtained. Further, the processing means may be configured to perform processing for converting a plurality of digital data in the axial direction of the subject 2 into one continuous captured image immediately after completion of imaging, or processing for separately capturing each captured image. And may be configured to be juxtaposed or synthesized according to subsequent requirements.

  In the X-ray imaging apparatus shown in FIG. 5, the moving mechanism unit control means 10 having the joint adjustment function 12 is configured to perform a first imaging section and a second imaging section that exist in the body axis direction of the subject 2. The first shooting position and the second shooting position are determined so that the boundary does not overlap at all, but the first shooting section and the second shooting position are known as processing in the long shooting mode. It is also possible to create an overlap portion between the second imaging section and the boundary portion, and to delete the overlap portion data when obtaining a composite X-ray fluoroscopic image.

  Further, as shown in FIG. 5, the moving mechanism unit control means 10 drives the X-ray source column 4 so that the X-ray incident angles α of the connecting portions existing in the body axis direction of the subject 2 are substantially equal. The difference between the X-ray incident angle α1 at the connecting portion of the first imaging section and the X-ray incident angle α2 at the connecting portion of the second imaging section is within 10 degrees, preferably various moving mechanism sections. Increase the position control accuracy by a within a few degrees. The X-ray incident angle is set in such a manner that the X-ray incident angle α1 at the connecting portion of the conventional first imaging section and the X-ray incident angle α2 at the connecting portion of the second imaging section shown in FIG. This is significantly smaller than the difference between the two, and the uncomfortable feeling at the joint after synthesis can be remarkably improved.

  The X-ray imaging apparatus described above can also perform imaging in other modes 11b and 11c other than the long imaging mode, and the top 3 and the X-ray source column 4 are provided for imaging in other modes 11b and 11c. It may be configured to perform other operations. In the above-described embodiment, the case has been described in which the imaging of the subject 2 is performed twice at the two imaging positions that are shifted in the body axis direction in the long imaging mode. The present invention can also be applied to a case where imaging is performed at two or more imaging positions that are shifted in the body axis direction.

  According to such an X-ray imaging apparatus, the position of the X-ray center 6a of the X-ray source 6 is not apparently changed, in other words, the X at the connection portion of each imaging section existing in the body axis direction of the subject 2. Since the moving mechanism unit control means 10 drives and controls the X-ray source column 4 so that the line incident angles α are substantially the same, when the long imaging mode 11a is selected, the X-ray center 6a is set as an apparent fulcrum. As described above, the X-ray source support column 4 is driven so that the X-ray incident angle α at the joint portion is substantially equal, and a plurality of times of imaging can be performed. The imaging region can be imaged, and a captured image can be obtained in which a sense of incongruity is eliminated at the connecting portion in the axial direction of the subject 2.

  In addition, the above-described X-ray imaging apparatus performs oblique angle imaging by swinging the X-ray source column 4 and the video system vertical movement mechanism unit 9a that moves the X-ray source column 4 in the body axis direction of the subject 2. When it is adopted in a general fluoroscopic imaging table having an X-ray source obliquely-inclined and moving mechanism unit 9b that enables the moving mechanism unit control to operate when the long imaging mode 11a is selected as a control system by a program. Since the connection adjustment function 12 that cooperates with the means 10 is added or only the moving mechanism control means 10 having the connection adjustment function 12 is provided, a simple configuration eliminates the uncomfortable feeling at the connection portion during long shooting. An X-ray imaging apparatus can be obtained.

  FIG. 6 is a block diagram showing a drive system of an X-ray imaging apparatus according to another embodiment of the present invention. In the previous embodiment, the fluoroscopic imaging table having the X-ray source support column 4 in which the X-ray source 6 and the X-ray flat detector 5 are connected has been described. However, the X-ray imaging apparatus includes the X-ray source 6 and the X-ray source. The present invention is applied to a structure in which the flat detector 5 is separated from each other so as to perform independent movements.

  The console 8 usually has a mode switching unit configured as a touch button switch of the display unit. When the long shooting mode 11a is selected from the mode switching unit, the connection unit adjusting function 12 is set by the selection signal. The moving mechanism control unit 10a having the operation is operated. The X-ray source moving mechanism unit control means 10a, as in the case of the previous embodiment, performs the image system vertical moving mechanism unit 9a and the X-ray source oblique line which are part of the X-ray source moving mechanism unit 15 according to a preset program. It is configured to drive and control the entrance angle moving mechanism 9b and the like. The selection signal for the long photographing mode 11a is also given to the detector moving mechanism section control means 10b, and the detector moving mechanism section control means 10b performs various movements 14 of the detector moving mechanism section 13 according to a preset program. The drive control is performed so that the position or state corresponds to the X-ray source 6 in the long imaging mode 11a.

FIG. 7 is a flowchart showing an imaging procedure when the long imaging mode 11a is selected by the X-ray imaging apparatus described above.
Now, assuming that the long imaging mode 11a is selected on the console 8 in step S1, the X-ray source moving mechanism unit control having the connecting portion adjusting function 12 is performed in step S2 after positioning through the front and rear. The means 10a provides the X-ray source moving mechanism 15 with an imaging position switching signal to the first imaging position. The video system vertical movement mechanism 9a and the X-ray source oblique movement mechanism 9b, etc. of the X-ray source movement mechanism 15 that has detected this are driven and controlled in accordance with a preset program, and the video system vertical movement is performed in step S3. The mechanism unit 9a moves the X-ray source 6 to the head side along the body axis of the subject 2, and the X-ray source oblique movement mechanism unit 9b moves on a vertical plane including the body axis of the subject 2. The X-ray source 6 is rotated clockwise by a predetermined angle and held at the first imaging position similar to that shown in FIG.

  Thereafter, as step S3a, a step of driving and controlling the detector moving mechanism unit 13 is added so that the X-ray flat detector 5 faces the X-ray source 6 accurately. The X-ray flat panel detector 5 is adjusted in the first time that has already been given to the detector moving mechanism control means 10b after the position and state of the X-ray source 6 are determined at the first imaging position. In accordance with a switching signal to the imaging position, various movements 14 of the detector moving mechanism unit 13 are driven and controlled in accordance with a preset program so that the position or state accurately corresponds to the X-ray source 6. The subsequent operations from step S4 to S7 are the same as those shown in FIG. In step S8, the X-ray source moving mechanism control unit 10a moves the X-ray source 6 slightly toward the foot of the subject 2 on the vertical plane including the body axis of the subject 2 by the video system vertical moving mechanism 9a. At the same time, the X-ray source 4 is rotated in the counterclockwise direction by the X-ray source obliquely-inclined moving mechanism unit 9b to obtain the second imaging position similar to that shown in FIG.

  In the subsequent step S8a, after the position and state of the X-ray source 6 at the second imaging position are determined, switching to the second imaging position already given to the detector moving mechanism control means 10b is performed. According to the signal, various movements 14 of the detector moving mechanism 13 are driven and controlled in accordance with a preset program, and the X-ray flat panel detector 5 is brought into a position or a state corresponding to the X-ray source 6 accurately. The subsequent operation is the same as in FIG.

  Even in such an X-ray imaging apparatus, the position of the X-ray center 6a of the X-ray source 6 is not apparently changed, in other words, as shown in FIG. 5, as in the case described in the previous embodiment. Since the X-ray source moving mechanism control unit 10a having the connecting part adjusting function 12 is provided so that the X-ray incident angles α at the connecting parts of the imaging sections existing in the body axis direction of the subject 2 are substantially the same, When the scale imaging mode 11a is selected, the X-ray source column 4 is driven as if the X-ray center 6a is an apparent fulcrum, and the X-ray incident angle α at the joint portion is made substantially equal to perform multiple imaging. It is possible to perform imaging of a large imaging region in the body axis direction by using one X-ray flat panel detector 5, and eliminates a sense of incongruity in the connecting portion of the subject 2 in the body axis direction. A photographed image can be obtained.

  The X-ray imaging apparatus according to the present invention is not limited to the fluoroscopic imaging table having the configuration shown in the drawing, but has other configurations, for example, the moving mechanism unit 9 from the console 8 side without the long imaging mode selection unit 11 shown in FIG. Can be applied to a configuration in which the attitude and position of the X-ray source support column 4 are directly controlled by controlling the X-ray source column 4.

It is a front view which shows the X-ray diagnostic apparatus by one embodiment of this invention. It is a front view which shows the other state of the X-ray diagnostic apparatus shown in FIG. It is a block block diagram which shows the principal part of the drive system of the X-ray diagnostic apparatus shown in FIG. It is a flowchart which shows the operation | movement at the time of the long imaging | photography mode by the X-ray diagnostic apparatus shown in FIG. It is explanatory drawing which shows the X-ray incident angle at the time of the long imaging | photography mode by the X-ray diagnostic apparatus shown in FIG. It is a block block diagram which shows the principal part of the drive system of the X-ray diagnostic apparatus by other embodiment of this invention. It is a flowchart which shows the operation | movement at the time of the long imaging | photography mode by the X-ray diagnostic apparatus shown in FIG. It is explanatory drawing which shows the X-ray incident angle at the time of the long imaging | photography mode by the conventional X-ray diagnostic apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Subject 4 X-ray source support | pillar 5 X-ray plane detector 6 X-ray source 6a X-ray center 7 Aperture device 9 Movement mechanism part 9a Image | video system vertical movement mechanism part 9b X-ray source diagonally-inclination moving mechanism part 10 Moving mechanism control means 11a Long shooting mode 12 Linking section adjustment function

Claims (2)

An X-ray imaging apparatus capable of long imaging, comprising a fluoroscopic imaging table having a top plate for placing a subject and an X-ray source column arranged substantially orthogonal to the top plate,
An X-ray source disposed on the opposite side of the top plate and above the X-ray source column;
An X-ray flat panel detector that can be disposed at a position facing the X-ray source across the top plate;
Rutotomoni moving the X-ray source posts the body axis of the subject, the possible shooting an inclined angle with respect to the subject about the same level position as the X-ray flat panel detector as an axis of rotation A moving mechanism unit that performs oblique insertion of the X-ray source column ,
The X-ray source column is moved to two imaging positions , which are a plurality of positions shifted in the body axis direction of the subject for long imaging, and a connecting portion existing between the two imaging positions shifted. A moving mechanism control means for driving and controlling the moving mechanism so that the X-ray incident angles from the X-ray source are substantially equal;
An X-ray imaging apparatus capable of long imaging.   2. The apparatus according to claim 1, wherein the moving mechanism unit control unit controls the moving mechanism unit to move to the plurality of imaging positions without changing an X-ray center position of the X-ray source. X-ray imaging device that can measure the scale.

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