JP2011167295A - Radiographic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radiographic apparatus having good operationality capable of confirming the movement of a subject by sight even when a monitor blocks one part of a window for observing the subject. <P>SOLUTION: An X-ray imaging apparatus 1 includes a first camera 21 imaging a complement image H0, and the complement image is edited with trimming, expanding and reducing and displayed in a blocking area of a monitor 35. The blocking area is one part of the monitor 35 where a subject M can not be seen because the monitor 35 blocks the sight line of an operator. If the monitor 35 is not mounted, the operator would directly see one part of the subject with eyes within the blocking area, and the one part of the subject M is displayed in the blocking area. Accordingly, the operator can confirm the blocking area in the monitor 35 as if the blocking area is transparent when the edited image H1 is displayed in the blocking area. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a radiographic apparatus that acquires a radiographic image of a subject, and more particularly to a radiographic apparatus that includes a monitor that displays a radioscopic image or the like.

  A medical institution is equipped with a radiation imaging apparatus that acquires a radiation image of a subject. Such a radiographic apparatus includes a radiation source that emits radiation and a radiation detector that detects the radiation. The radiation imaging apparatus includes an operation console for inputting an operator's instruction, and the operator can give various instructions to the radiation imaging apparatus through the operation console. The radiation imaging apparatus is provided with a monitor that displays a radioscopic image of the subject, various operation icons, and imaging conditions. The surgeon operates the console while referring to the monitor to take a picture.

  The operator can change the position of the subject M by operating the console. In the examination of the stomach wall with barium and the like, radiographic images are acquired one after another while moving the subject M.

  By the way, there may be a protective wall between the subject and the surgeon that suppresses the radiation exposure of the surgeon. The protective wall is provided with a window so that the operator can observe the subject. The positional relationship among the window, the monitor, and the console will be described. FIG. 14 shows the field of view of the operator. During the operation on the console, the subject M looks to the operator as shown in FIG. An example of a radiation imaging apparatus having such a configuration is disclosed in Patent Document 1.

  Refer to FIG. Glass or the like is fitted in the window 54 provided in the protective wall 53. The surgeon can see the subject through this window. A monitor 55 and a console 56 are provided in front of the protective wall 53 (window 54) as viewed from the surgeon. The operator operates the console 56 while observing the subject M through the window, and observes the radiation image reflected on the monitor 55. In order to facilitate the operation of the surgeon, it is better to place the window 54, the monitor 55 and the console 56 in the center as viewed from the surgeon. Otherwise, the surgeon will operate with an unreasonable posture. Therefore, the window 54, the monitor 55, and the console 56 are arranged in the vertical direction within the operator's field of view, and the monitor 55 is not placed beside the window 54.

JP 2001-204738 A

  However, the radiation imaging apparatus configured as described above has the following problems. That is, in recent years, the size of the monitor 55 has increased, and the monitor 55 itself blocks the view of the operator. When the size of the monitor 55 is increased, it is convenient to display a larger radiographic image. On the other hand, a part of the window 54 provided on the back side of the monitor 55 as viewed from the operator is hidden by the monitor 55. Therefore, as shown in FIG. 14, the operator cannot monitor the lower part of the window 54. The shaded area in the display area of the monitor 55 in the figure is the shielding area S. The shielding area S is an area of the monitor 55 where the monitor 55 blocks the window 54 when viewed from the operator.

  Therefore, the surgeon must stand up only when he / she wants to mainly observe the subject M, or directly observe the window 54 from the side of the monitor 55, and the operability of the radiation imaging apparatus is deteriorated. .

  When the monitor 55 is made smaller, the monitor 55 does not block the window 54. However, in that case, the size of the radiation image that can be displayed on the monitor 55 is limited. Further, in recent years, the manufactured monitor 55 is only large, and it is difficult to prepare a small monitor 55. If an attempt is made to prepare a small monitor 55 in such a situation, the cost of the radiation imaging apparatus is increased.

  In some radiography apparatuses, the state of the subject M is captured as a moving image with a camera as shown in FIG. 15, and this image is displayed on the monitor 55 in real time. Such a setting is made for the purpose of making the surgeon recognize the state of the subject M difficult to see from the window 54 more clearly. However, in such a radiographic apparatus, the complexity of the operator's work has not been improved so much. This is because the video taken from the camera is obtained when the subject is viewed from a different angle from the operator, and it is difficult to move the subject based on this. Even in such a setting, it is difficult to visually recognize the subject M by being obstructed by the monitor 55.

  The present invention has been made in view of such circumstances, and an object of the present invention is to surely visually recognize the movement of the subject even when the monitor blocks a part of the window for observing the subject. An object of the present invention is to provide a radiographic apparatus that can perform the above operation and has excellent operability.

The present invention has the following configuration in order to solve the above-described problems.
That is, a radiographic apparatus according to the present invention includes a top plate on which a subject is placed, a radiation source that irradiates radiation, a radiation detection unit that detects radiation, a top plate moving unit that moves the top plate, An input means for inputting a movement instruction to the plate moving means; a radiation image generating means for generating a radiation image in which a radiation image of the subject is reflected based on a detection signal output from the radiation detecting means; an operator and a subject Provided between the specimen and a display means for displaying a radiographic image and a complementary image edited by a complementary image editing means described later, and provided on the back side of the display means as viewed from the operator operating the input means. A first camera that captures the subject; a complementary image generating means that generates a complementary image in which the movement of the subject is reflected based on a signal output from the first camera; and Complementary image editing means for reducing the size of the display means, and the display means, when the portion that is blocking the subject as seen from the surgeon is used as a shielding area, the display means if the display means is not provided The complementary image portion corresponding to the portion of the subject visually recognized by the operator within the range of the shielding region is displayed on the shielding region.

  [Operation / Effect] The radiation imaging apparatus according to the present invention includes a first camera provided on the back side of the display means. For the surgeon, the back side of the display means is a blind spot. The first camera is provided to compensate for the blind spot of the operator. Then, the complementary image captured by the first camera is displayed on the display means and is visually recognized by the operator.

  According to the present invention, the complementary image is subjected to editing such as trimming / enlarging / reducing and displayed on the display means. Assuming that the edited complementary image is an edited image, the edited image is displayed within a shielded area that is a portion that is not visible to the operator when the display means blocks the subject. Then, the shielding area displays a portion of the subject that the operator will directly observe within the shielding area when the display means is not provided. Therefore, if the edited image is displayed in the shielding area, it can be recognized as if the shielding area in the display means is transparent from the viewpoint of the operator. As described above, the radiographic apparatus according to the present invention has a configuration as if the image of the subject reaches the operator through the shielding area of the display means. As a result, when the operator moves the top board, it is displayed in the shielding area of the display means how the subject is doing behind the display means. Can be provided.

  In addition, a protective wall is provided between the above-described subject and the input means and prevents the operator from being exposed to radiation, and the protective wall is provided with a window through which the operator observes the subject. Is more desirable as long as it is a portion of the display means that blocks the window when viewed by the operator.

  [Operation / Effect] The above-described configuration shows a specific configuration of the present invention. That is, according to the above-described configuration, the protective wall is provided between the subject and the input means, and the window for observing the subject is provided on the protective wall. The shielding area is a portion of the display means that blocks the window as viewed from the operator. Since the operator observes the subject through the window, it is sufficient to determine the shielding region based on the position of the window that can be seen by the operator (see FIG. 5).

  In addition, the above-described second camera for monitoring the operator's line of sight is provided, and the complementary image editing unit executes the editing of the complementary image every time the position of the operator's line of sight changes. If it is not provided, a portion of the complementary image corresponding to the portion of the subject that the operator visually observes within the range of the shielding area is acquired, and the display means shields the newly acquired complementary image after editing. It is more desirable to display in the area.

  [Operation / Effect] According to the above-described configuration, the display of the shielding region can be changed in accordance with the movement of the operator's line of sight. When the surgeon changes the line of sight, it appears to the surgeon that the relative position of the display means and the subject has changed. If the supplementary image is edited in accordance with the movement of the operator's line of sight, the image of the subject displayed in the shielding area of the display means moves together with the movement of his / her line of sight. Looks like. In this way, there is no positional discrepancy between the subject that the operator views directly regardless of the change of the operator's line of sight and the image of the subject that the operator views through the display means (see FIG. 7). .

  The supplementary image editing unit includes a storage unit that stores a relation table in which the position of the operator's line of sight monitored by the second camera is associated with the complementary image editing mode performed by the complementary image editing unit. The related table operates by referring to the related table. The related table allows the first camera to photograph the subject with the mark, and the position of the mark reflected in the shielding area and the position of the mark where the surgeon actually looks at the subject. The editing mode of the complementary image is determined so as to be the same, and the editing mode is determined at each position of the operator's line of sight recognized by the second camera, so that the position of the line of sight and the editing determined at that time are determined. It is more desirable to associate each of these forms.

  [Operation / Effect] The above-described configuration shows how the complementary image is edited in accordance with the movement of the operator's line of sight. That is, the complementary image editing means refers to the related table and changes the editing style of the complementary image. In particular, the complementary image editing unit changes the trimming position of the complementary image using the related table. The association table associates the operator's line-of-sight position with the image editing style, and the complementary image editing means searches the association table for an editing style suitable for the current operator's line-of-sight position. It has become. This association table is generated by causing the first camera to photograph a marked subject while changing the position of the operator's line of sight.

  Further, it is more desirable that the above-described input means is provided with shielding area range setting means for allowing the operator to set the shielding area range in the display means.

  [Operation / Effect] According to the above-described configuration, the operator can easily adjust the size of the shielding region. Depending on the height of the surgeon, the degree of overlap between the display means and the subject changes. If it is set as the above structures, an operator can adjust the magnitude | size of a shielding area | region so that it may be suitable for own visual recognition.

  In addition, in the above-described input unit, if the display unit is not provided, a portion of the complementary image corresponding to the portion of the subject that the operator visually observes within the shielded region is displayed in the shielded region. It is more desirable if display switching means is provided for allowing the operator to select whether to display the entire complementary image on the display means.

  [Operation / Effect] With the above-described configuration, if the complementary image edited by the complementary image editing unit can be displayed in the occlusion area, the display unit can select whether to display the entire complementary image that has not been trimmed. Can do.

  In the radiographic apparatus according to the present invention, the complementary image captured by the first camera is subjected to editing such as trimming / enlarging / reducing and displayed on the shielding area of the display means. The shielding area is a part of the display means in which the display means blocks the operator's line of sight and makes the subject invisible. In this shielded area, a part of the subject that the operator will directly view within the shielded area when the display means is not provided is displayed. Therefore, if the edited image is displayed in the shielding area, it can be recognized as if the shielding area in the display means is transparent from the viewpoint of the operator.

1 is a functional block diagram illustrating a configuration of an X-ray imaging apparatus according to Embodiment 1. FIG. It is a schematic diagram explaining the movement of the top plate which concerns on Example 1. FIG. It is a perspective view explaining the protective wall which concerns on Example 1. FIG. FIG. 3 is a schematic diagram for explaining a positional relationship of each unit according to the first embodiment. FIG. 3 is a schematic diagram illustrating how an operator according to Example 1 looks. FIG. 3 is a schematic diagram illustrating how an operator according to Example 1 looks. FIG. 3 is a schematic diagram illustrating how an operator according to Example 1 looks. It is a top view explaining the creation method of the related table which concerns on Example 1. FIG. It is a schematic diagram explaining the creation method of the related table which concerns on Example 1. FIG. FIG. 3 is a plan view illustrating the configuration of the console according to the first embodiment. FIG. 3 is a schematic diagram illustrating a configuration of a console according to the first embodiment. FIG. 3 is a schematic diagram illustrating a configuration of a console according to the first embodiment. FIG. 3 is a schematic diagram illustrating a configuration of a console according to the first embodiment. It is a schematic diagram explaining the structure of the X-ray imaging apparatus of a conventional structure. It is a schematic diagram explaining the structure of the X-ray imaging apparatus of a conventional structure.

  Next, an embodiment of the radiation imaging apparatus according to Embodiment 1 will be described with reference to the drawings. The X-ray in Example 1 corresponds to the radiation of the present invention.

<Configuration of entire X-ray imaging apparatus>
FIG. 1 is a functional block diagram illustrating the configuration of the radiation imaging apparatus according to the first embodiment. As shown in FIG. 1, the X-ray imaging apparatus 1 according to the first embodiment includes a top plate 2 on which a subject M that is a subject of X-ray fluoroscopic imaging is placed, and a subject provided above the top plate 2. An X-ray tube 3 that irradiates M with a cone-shaped X-ray beam, and a sheet-like flat panel X-ray detector that is provided below the top plate 2 and detects a transmission X-ray image of the subject M ( Hereinafter, FPD is abbreviated as 4). The X-ray tube 3 corresponds to the radiation source of the present invention.

  The X-ray tube 3 is configured to repeatedly irradiate the subject M with a cone-shaped and pulsed X-ray beam according to the control of the X-ray tube control unit 6. The X-ray tube 3 is provided with a collimator that collimates the X-ray beam into a cone shape that is a pyramid.

  A configuration of the FPD 4 will be described. On the detection surface for detecting X-rays of the FDP 4, X-ray detection elements for detecting X-rays are arranged vertically and horizontally. For example, 1,024 X-ray detection elements are arranged in the body axis direction A of the subject and 1,024 in the body side direction S of the subject. The arrangement pitch is 300 μm in both the body axis direction A and the body side direction S. The FPD 4 corresponds to the radiation detection means of the present invention.

  The top plate moving mechanism 7 moves the top plate 2. If the top plate 2 can be tilted by the top plate moving mechanism 7 so that the head of the subject M is above the leg as shown in FIG. 2, the head of the subject is below the leg. It can also be inclined so that The top plate movement control unit 8 controls the top plate moving mechanism 7. The top plate moving mechanism 7 corresponds to the top plate moving means of the present invention.

  The X-ray image generation unit 11 generates an X-ray image T in which an X-ray fluoroscopic image of the subject is reflected based on the detection signal output from the FPD 4. The X-ray image T is sent to the overlay unit 15. The first camera 21 captures the subject M. Then, the complementary image generation unit 12 generates a complementary image H0 based on a signal output from the first camera 21 described later. Since the first camera 21 continuously images the subject M, the complementary image H0 is acquired continuously over time. In each of the complementary images H0, the subject illuminated by the illumination provided on the ceiling of the examination room is reflected. The X-ray image generation unit 11 corresponds to the radiation image generation unit of the present invention, and the complementary image generation unit 12 corresponds to the complementary image generation unit of the present invention.

  The complementary image editing unit 13 performs trimming / enlargement / reduction image editing on the complementary image H0 to generate an edited image H1. The edited image H1 is output to the overlay unit 15. The superimposing unit 15 superimposes the edited image H1 on the X-ray image T to generate a superimposed image G, which is sent to the monitor 35. The monitor 35 displays the superimposed image G. The complementary image editing unit 13 corresponds to complementary image editing means of the present invention, and the monitor 35 corresponds to display means of the present invention.

  When the operator gives an instruction for radiation exposure through the console 36, X-rays are emitted from the X-ray tube 3. X-rays transmitted through the subject M are detected by the FPD 4, and the FPD 4 outputs a detection signal to the X-ray image generation unit 11. The X-ray image T generated by the X-ray image generation unit 11 is overlaid with the edited image H1 by the overlapping unit 15, and the superimposed image G is displayed on the monitor 35 in real time.

  The second camera 22 captures an operator who operates the X-ray imaging apparatus 1. Then, the line-of-sight position acquisition unit 23 acquires the movement of the operator's line of sight based on the signal output from the second camera 22. Since the second camera 22 continuously images the subject M, information regarding the movement of the position of the line of sight is continuously acquired. By referring to the information regarding the movement of the position of the line of sight, it is possible to determine which direction the operator is working.

  The protective wall 25 is provided for the purpose of shielding the X-rays emitted from the X-ray tube 3 as shown in FIG. The protective wall 25 is provided so as to isolate the subject M from the surgeon, and X-rays are not absorbed by the protective wall 25 and reach the surgeon. The protective wall 25 is provided with a window 25a for observing the subject M. The surgeon observes the subject M through the window 25a. An X-ray shielding glass is fitted in the window 25a. The monitor 35, the first camera 21, and the second camera 22 are isolated from the subject M by the protective wall 25. That is, these are provided on the side where the operator is present.

  The storage unit 37 stores all the setting values and the outputs of the units in the control units 6 and 8 and the units 11, 12, 13 and 15 relating to image generation. In the storage unit 37, for example, a related table referred to by the complementary image editing unit 13 is stored. The storage unit 37 corresponds to the storage unit of the present invention. The storage unit 37 corresponds to the storage unit of the present invention.

  The X-ray imaging apparatus 1 according to the first embodiment includes a main control unit 41 that comprehensively controls the control units 6 and 8. The main control unit 41 is constituted by a CPU, and realizes the control units 6 and 8 and the units 11, 12, 13, and 15 by executing various programs.

  The console 36 is an input unit for inputting an operation of the surgeon. The specific configuration of the console 36 will be described later. The console 36 corresponds to input means of the present invention.

<Positional relationship of each part>
Next, the positional relationship of each part will be described. Point P in FIG. 4 represents the focus of the surgeon's viewpoint. If the monitor 35 is not provided, the surgeon should be able to see the portion of the region R1 beyond the window 25a from the focal point P directly. However, the monitor 35 partially hides the state beyond the window 25a. Specifically, the surgeon cannot see the region R2 directly by being obstructed by the monitor 35. Note that a display surface for displaying various images on the monitor 35 in FIG. 4 is directed to the focal point P side.

  The first camera 21 is installed on the back side of the monitor 35 as viewed from the operator. Specifically, the first camera 21 is provided in one of the line segments connecting the blind spot region R2 and the focal point P. The first camera 21 continuously captures the entire area of the window 25a. The second camera 22 is a camera attached to the monitor 35 and continuously images the operator's head. The line-of-sight position acquisition unit 23 reads the change in the position of the eyeball of the surgeon included in the output signal of the second camera 22 and sequentially acquires the change in the line-of-sight position of the operator.

<Display of monitor>
Next, the most characteristic configuration of the present invention will be described. As shown in FIG. 5, according to the configuration of the first embodiment, a part of the subject that is supposed to be hidden by the monitor 35 and should not be seen is displayed on the monitor 35. That is, when the surgeon looks at the window 25a, if the monitor 35 is not provided in the shaded area S, which is a portion of the monitor 35 that shields the inside of the window, the shield area S A portion of the window 25a that is directly viewed by the surgeon within the range is displayed. Thus, the surgeon can perform various operations by recognizing the portion where the monitor 35 and the window 25a overlap as if the monitor 35 is transparent. The image displayed in the shielding area S is a moving image displayed in real time, and if the operator moves the top board 2, the top board 2 displayed in the shielding area S is also moved accordingly. To do. The moving image displayed in the shielding area S is acquired by the first camera 21.

  Since the first camera 21 captures the entire area of the window 25a, simply moving the moving image acquired by the first camera 21 into the shielding area S does not result in the configuration shown in FIG. Therefore, it is necessary to edit the complementary image H0 acquired by the first camera 21. It is the complementary image editing unit 13 that performs this editing. The complementary image editing unit 13 is suitable for complementing the occlusion area S by extracting a portion corresponding to the occlusion area S of the complementary image H0 by trimming and applying image processing for enlargement / reduction to the extracted image. The edited image H1 is generated. At this time, the complementary image editing unit 13 refers to the information related to the position of the shielding area S stored in the storage unit 37 and the information related to the editing style.

<Transition of the operator's line of sight>
The next feature of the configuration of the first embodiment is that the display of the shielding area S is changed as the position of the operator's line of sight changes. It is assumed that the second camera 22 and the line-of-sight position acquisition unit 23 are not provided. As shown in FIG. 6, when the position of the operator's line of sight changes in the lateral direction (the width direction of the monitor 35), the positional relationship between the subject, the frame of the window 25a, and the monitor 35 that the operator directly looks at changes. . Since the image of the subject M displayed in the shielding area S of the monitor 35 assumes a state in which the operator views the monitor 35 from the front, as shown in FIGS. The image of the subject M that the person sees directly looks different from the image of the subject displayed in the shielding area S in the lateral direction.

  However, according to the configuration of the first embodiment, the line-of-sight position acquisition unit 23 detects a change in the position of the operator's line of sight, and based on this, the complementary image editing unit 13 changes the trimming position of the complementary image H0. Therefore, as shown in FIGS. 7A to 7C, there is no positional discrepancy between the image of the subject M that is directly viewed by the operator and the image of the subject displayed in the shielding region S. . When the operator's line of sight is at the current position, the complementary image editing unit 13 shields the portion of the window 25a that the operator views directly within the shielding area S when the monitor 35 is not provided. The complementary image H0 is trimmed so as to be displayed in the region S. The complementary image editing unit 13 changes the trimming position of the complementary image H0 each time the operator's line of sight changes. 6 and 7, it is assumed that the positional relationship between the frame of the window 25a viewed by the operator and the subject does not change for the purpose of brief explanation.

  In such a change in the trimming operation of the complementary image editing unit 13, the complementary image editing unit 13 acquires the position information of the operator's line of sight output from the line-of-sight position acquisition unit 23, and refers to the storage unit 37 to change the line of sight. This is done by reading the image editing mode suitable for the position. The storage unit 37 stores a related table in which the position information of the operator's line of sight and the image editing style performed by the complementary image editing unit 13 are associated with each other. The complementary image editing unit 13 searches the column of the line-of-sight position information in the related table, and acquires the image editing style corresponding to the current operator's line-of-sight position. Then, the complementary image editing unit 13 edits the complementary image H0 based on the read image editing format.

<Generation of related table>
A method for generating such a related table will be described. The association table is performed by causing the first camera 21 to photograph the subject. During this operation, the subject M is not placed on the top 2. As shown in FIG. 8, the subject 26 is marked along the vertical direction and the horizontal direction. When the subject 26 is viewed from the monitor 35 and placed behind the protective wall 25 and is photographed by the first camera 21, a part of the subject 26 with a mark is displayed in the shielding area S. In FIG. 9, the position of the grid of the subject 26 that is actually visually observed is different from the position of the grid of the subject 26 displayed in the shielding area S. The adjuster adjusts the editing style (trimming position, enlargement ratio) of the complementary image H <b> 0 so that this does not conflict. The coordinator performs the same operation while changing the position of his / her line of sight, and stores a related table in which the position of the line of sight and the position of the editing style are associated with each other in the storage unit 37.

<Configuration of console>
Finally, the configuration of the console 36 will be described. As shown in FIG. 10, the console 36 includes a shielding area range setting button 36a, a display switching button 36b, and a camera image display button 36c. When the surgeon presses the shielding area range setting button 36a, a scale bar appears on the monitor 35. When the surgeon operates the scale bar, the shielding area S on the monitor 35 can be scaled up and down as shown in FIG. it can. The superposition unit 15 that has received an instruction through the scale bar changes the pattern of the superimposed image G. The instruction of the scale bar is also output to the complementary image editing unit 13, and the complementary image editing unit 13 changes the editing style according to the size of the shielding area S. The display switching button 36b corresponds to the display switching means of the present invention, and the shielding area range setting button 36a corresponds to the shielding area range setting means of the present invention.

  When the operator presses the display switching button 36b, the shielding area S that has appeared on the monitor 35 is erased as shown in FIG. Overlaid. That is, the monitor 35 displays the entire region of the complementary image H0 (indicated by symbol D in the drawing) instead of the edited image H1. When the surgeon presses the display switching button 36b again, the state returns to the state shown in FIG. At this time, it is necessary to enlarge or reduce the complementary image H0. This operation is performed by the complementary image editing unit 13. The superposition unit 15 receives the instruction from the display switching button 36b to change the superposition image G.

  When the surgeon presses the camera image display button 36c, the shielding area S that has appeared on the monitor 35 is deleted as shown in FIG. When the surgeon presses the camera image display button 36c again, the state returns to the state shown in FIG. The superposition unit 15 receives the instruction from the camera image display button 36c to change the pattern of the superimposed image G.

  As described above, the X-ray imaging apparatus 1 according to the first embodiment includes the first camera 21 provided on the back side of the monitor 35 as viewed from the operator. For the surgeon, the back side of the monitor 35 is a blind spot. The first camera 21 is provided to compensate for the blind spot of the surgeon. The complementary image H0 captured by the first camera 21 is displayed on the monitor 35 and is visually recognized by the operator.

  According to the first embodiment, the complementary image H0 is subjected to editing such as trimming / enlarging / reducing and displayed on the monitor 35. Assuming that the edited complementary image H0 is the edited image H1, the edited image H1 is displayed in the range of the shielding area S that is a portion that is not visible to the operator when the monitor 35 blocks the subject M. Then, the shielding region S displays a part of the subject M that the operator will directly observe within the shielding region S when the monitor 35 is not provided. Therefore, if the edited image H1 is displayed in the shielding area S, it can be recognized as if the shielding area S on the monitor 35 is transparent from the viewpoint of the operator. As described above, the X-ray imaging apparatus 1 according to the first embodiment is configured as if the image of the subject M has passed through the shielding area S of the monitor 35 and reached the operator. As a result, when the operator moves the top 2, the operation of the subject M on the back side of the monitor 35 is displayed in the shielding area S of the monitor 35. The X-ray imaging apparatus 1 can be provided.

  Further, according to the configuration of the first embodiment, the protective wall 25 is provided between the subject M and the console 36, and the protective wall 25 is provided with the window 25a for observing the subject M. The shielding area S is a portion of the monitor 35 that blocks the window 25a when viewed from the operator. Since the operator observes the subject M through the window, it is sufficient to determine the shielding region S based on the position of the window 25a that can be seen by the operator.

  And according to the above-mentioned composition, the display of shielding field S can be changed according to movement of an operator's eyes. When the surgeon changes his / her line of sight, it appears to the surgeon that the relative position of the monitor 35 and the subject M has changed. If the complementary image H0 is edited in accordance with the movement of the operator's line of sight, the image of the subject M displayed on the shielding area S of the monitor 35 is also displayed together with the movement of his / her line of sight. Looks like you have moved on. In this way, there is no positional discrepancy between the subject M that is directly viewed by the surgeon and the image of the subject M that the surgeon visually recognizes through the monitor 35 regardless of changes in the operator's line of sight.

  In addition, the above-described configuration shows how the complementary image H0 is edited in accordance with the movement of the operator's line of sight. That is, the complementary image editing unit 13 changes the editing style of the complementary image H0 with reference to the related table. In particular, the complementary image editing unit 13 changes the trimming position of the complementary image H0 using the related table. The association table associates the operator's line-of-sight position and the image editing style, and the complementary image editing unit 13 searches the association table for an editing style suitable for the current operator's line-of-sight position. It has become. The association table is generated by causing the first camera 21 to photograph a marked subject while changing the position of the operator's line of sight.

  And according to the above-mentioned composition, an operator can adjust the size of shielding field S easily. The degree of overlap between the monitor 35 and the subject M changes according to the height of the operator's back. If it is set as the above structures, an operator can adjust the magnitude | size of the shielding area | region S so that it may be suitable for own visual recognition.

  According to the above-described configuration, the display switching button 36b is provided. Thereby, if the complement image H0 edited by the complement image editing unit 13 can be displayed in the occlusion area S, it is possible to select whether to display the entire complement image H0 that has not been trimmed on the monitor 35.

  The present invention is not limited to the configuration of the above-described embodiment, and can be modified as follows.

  (1) Although each embodiment described above is a medical device, the present invention can also be applied to industrial and nuclear devices.

  (2) The X-ray referred to in each of the above-described embodiments is an example of radiation in the present invention. Therefore, the present invention can be applied to radiation other than X-rays.

H0 Complementary image H1 Edited image 2 Top plate 3 X-ray tube (radiation source)
4 FPD (radiation detection means)
7 Top plate moving mechanism (top plate moving means)
11 X-ray image generation unit (radiation image generation means)
12 Complementary image generator (complementary image generator)
13 Complementary image editing part (complementary image editing means)
21 First camera 22 Second camera 25 Protective wall 25a Window 35 Monitor (display means)
36 Console (input means)
36a shielding area range setting button (shielding area range setting means)
36b Display switching button (display switching means)
37 storage unit (storage means)

Claims (6)

A top plate on which the subject is placed;
A radiation source that emits radiation;
Radiation detection means for detecting radiation;
A top plate moving means for moving the top plate;
Input means for inputting a movement instruction to the top board moving means;
A radiation image generating means for generating a radiation image in which a radiation image of a subject is reflected based on a detection signal output from the radiation detecting means;
A display unit that is provided between the operator and the subject and that displays a radiographic image and a complementary image edited by a complementary image editing unit described below;
A first camera for imaging a subject provided on the back side of the display means as viewed from an operator who operates the input means;
Complementary image generation means for generating a complementary image in which the movement of the subject is reflected based on the signal output from the first camera;
Complementary image editing means for trimming / enlarging / reducing the complementary image,
When the portion of the display means that is blocking the subject as seen from the operator is a shielding area,
The display means displays, on the shielding area, the portion of the complementary image corresponding to the part of the subject that the operator visually observes within the shielding area when the display means is not provided. A radiographic apparatus characterized by. The radiographic apparatus according to claim 1,
A protective wall is provided between the subject and the input means and prevents radiation exposure of the operator,
The protective wall is provided with a window for the operator to observe the subject,
The radiation imaging apparatus according to claim 1, wherein the shielding area is a portion of the display means that shields the window as viewed from an operator. The radiographic apparatus according to claim 1 or 2,
A second camera for monitoring the operator's line of sight;
The complementary image editing means performs the editing of the complementary image every time the position of the operator's line of sight changes, and each time within the range of the shielding area when the display means is not provided. To obtain the portion of the complementary image corresponding to the portion of the subject that the surgeon visually observes,
The radiographic apparatus, wherein the display means displays the newly acquired edited complementary image in the shielding area. The radiographic apparatus according to claim 3,
Storage means for storing an association table in which the position of the operator's line of sight monitored by the second camera is associated with the mode of editing of the complementary image performed by the complementary image editing unit;
The complementary image editing means operates with reference to the related table,
The association table causes the first camera to photograph a subject with a mark so that the position of the mark reflected in the shielding area is the same as the position of the mark where the operator actually looks at the subject. By determining the editing mode of the complementary image, and determining the editing mode at each position of the operator's line of sight recognized by the second camera, each of the line-of-sight position and the editing mode determined at that time is determined. A radiographic apparatus characterized by being associated with each other. The radiation imaging apparatus according to any one of claims 1 to 4,
The radiographic apparatus according to claim 1, wherein the input unit includes a shielding region range setting unit that allows an operator to set a range of the shielding region in the display unit. The radiographic apparatus according to any one of claims 1 to 5,
The input means displays the portion of the complementary image corresponding to the portion of the subject that the operator visually observes within the shielded area within the shielded area when the display means is not provided. Or a radiographic imaging apparatus, comprising: a display switching unit that allows an operator to select whether to display the entire complementary image on the display unit.

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