JP2016150155A - X-ray fluoroscopic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray fluoroscopic apparatus by which it is possible for a subject or an operator to grasp a present see-through/photographing situation or a condition for setting seeing-through/photographing.SOLUTION: A projector 41 is provided beside an X-ray tube 2 as image projection means for projecting an arbitrary image on a top plate 1 on which a subject is placed. By providing the project 41 beside the X-ray tube 2, setting an image indicating a present see-through/photographing situation or a condition for setting seeing-through/photographing (e.g., a positioning support image), and projecting the set image on the top plate 1, it is possible for a subject or an operator to grasp a present see-through/photographing situation or a condition for setting seeing-through/photographing when the subject or the operator sees the image projected on the top plate 1.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an X-ray fluoroscopic imaging apparatus that performs fluoroscopy or radiography.

  Conventionally, as this type of apparatus, a top plate on which a subject is placed is tilted up and tilted to perform fluoroscopy or imaging (see, for example, Patent Document 1). As shown in step S2 (paragraph number “0029”) of FIG. 2 of Patent Document 1, when the subject is positioned (hereinafter referred to as “positioning”), the subject is seen and imaged.

  In the X-ray fluoroscopic apparatus, before starting a test on a subject who is a patient, depending on the content of the test, the body part of the subject (digestive organ, respiratory organs, legs, arms, shoulders) For example, an operator (for example, an engineer) needs to properly position the body of the subject with respect to the X-ray tube / X-ray detector. Depending on the type of examination, positioning may be performed multiple times in one examination in order to see and photograph different parts of the body or to see and photograph the same part from different directions.

  If proper positioning is not performed, the following problems occur. The entire region of interest does not fall within the irradiation area, the body part of the region of interest overlaps with the body part of the region of interest, and a good fluoroscopic image cannot be obtained. Problems occur, such as irradiating the line and causing unnecessary exposure.

  In a conventional X-ray fluoroscopic apparatus, positioning is performed by lighting an illumination field lamp provided in a collimator when positioning at the start of an examination. Specifically, by turning on the illumination field lamp, the engineer knows which area on the tabletop is irradiated with X-rays, and how the engineer places the patient's body on the tabletop In view of the above, positioning was performed by giving a voice instruction to the patient or by directly touching and guiding the patient. Also, when positioning during the examination, the engineer gives verbal positioning instructions to the patient in the examination room through the microphone from the operation room, or the engineer reenters the examination room and directly touches the patient for guidance. By doing so, positioning was performed.

  In addition, as an example in which accurate positioning is required, there is a case where it is desired to observe the progress of recovery related to a body part for a specific patient across months. At this time, in order to perform accurate image comparison, for the images that are fluoroscopically / photographed, the positioning of the patient's body part is accurately performed at the same location and in the same direction with respect to the X-ray tube / X-ray detector every time. It is necessary to have been taken through and photographed.

JP 2014-113310 A (page 5, FIG. 2)

  However, with respect to the positioning described above, there is a problem in that it is difficult for the patient himself / herself who is inspected to know how to position himself / herself spontaneously. Therefore, as described above, an instruction by an engineer's voice or a trouble of directly touching and guiding the patient occurs.

  Further, at this time, there is a problem that it is difficult for the patient to perform proper positioning only by an instruction from the engineer. For example, when positioning the shooting of the hand, it is detailed where the hand is placed on the top, where the arm is placed, what the palm is, the wrist angle, the finger is opened, etc. The voice needs to be indicated and the patient needs to know it properly.

  This problem is particularly noticeable in changing positioning during inspection. The patient is on or near the equipment in the laboratory and the technician is operating the equipment from the operating room. Therefore, when positioning by the instruction by the engineer's voice is not successful, the engineer moves to the examination room each time, and it takes time and effort to directly touch and guide the patient. This effort is generated every time a different part is imaged or a specific part is to be seen through and photographed from a different direction, causing a delay in examination time.

  In addition, when it is desired to observe the recovery process of a body part for a specific patient across the month and day, it is difficult to accurately position the body part of the patient at the same place and at the same angle each time. In particular, it is difficult to perform the same positioning as the previous time only with the illumination field lamp. Therefore, for example, it is necessary to observe the X-ray image at the time of the previous inspection on the monitor, assume the previous positioning from there, and practice the same positioning as the previous time. However, in practice, it is difficult to reproduce the previous positioning by comparing the X-ray image on the monitor with the current patient on the top board. In particular, when the engineer is different from the previous one, it is more difficult to achieve the same positioning as the previous one.

  The present invention has been made in view of such circumstances, and provides an X-ray fluoroscopic imaging apparatus that allows a subject or an operator to easily grasp the current fluoroscopy / imaging status or conditions for setting fluoroscopy / imaging. The purpose is to do.

In order to achieve such an object, the present invention has the following configuration.
That is, an X-ray fluoroscopic apparatus according to the present invention is an X-ray fluoroscopic apparatus that includes an image system including an X-ray tube and an X-ray detector disposed so as to face the X-ray tube, and performs fluoroscopy or imaging using the image system. In addition, image projection means for projecting an arbitrary image on the top plate on which the subject is placed is provided beside the X-ray tube.

  [Operation / Effect] According to the X-ray fluoroscopic apparatus of the present invention, the image projection means for projecting an arbitrary image on the top plate on which the subject is placed is provided beside the X-ray tube. By providing the image projecting means beside the X-ray tube, setting an image indicating the current fluoroscopy / imaging situation or conditions for setting fluoroscopy / imaging, and projecting the set image on the top board The subject or operator can view the image projected on the top board and can easily grasp the current fluoroscopic / imaging situation or conditions for setting the fluoroscopic / imaging.

  The top plate is not necessarily included in the configuration of the X-ray fluoroscopic apparatus. For example, in the case where the X-ray fluoroscopic apparatus is an apparatus including a mobile round trolley, the top plate is not included in the configuration of the mobile round trolley. Of course, the top plate may be included in the configuration of the X-ray fluoroscopic apparatus. As an arrangement mode of the image projection means, when the image projection means further includes a collimator that is attached to the X-ray tube and narrows down the X-rays emitted from the X-ray tube, the image projection means is attached outside the collimator. A mode and the mode attached inside the collimator are mentioned. Further, the image projected on the top board by the image projection means may be an error message, a warning, an X-ray condition, or the like, or a positioning support image of the subject.

  When the image projected on the top plate is a positioning support image, an image projecting unit is provided beside the X-ray tube, and the positioning support image is projected onto the top plate so that the positioning support image is received. The subject or the operator can easily grasp the positioning as viewed by the sample or the operator. As a result, positioning can be performed easily and accurately, or the same positioning as the previous time can be easily and accurately reproduced. In addition, since the image projection means is provided beside the X-ray tube, the effect of the movement of the X-ray tube can be considered by projecting and displaying the positioning support image at the same position as the exposure area from the actual X-ray tube. It is possible to cope with the positioning.

  When the image projected on the top board is a positioning support image, it is preferable to include image registration means for registering an arbitrary image as a positioning support image. An operator (for example, an engineer) can register an arbitrary image as a positioning support image.

  In the case where the image projected on the top board is a positioning support image, it is preferable to include first image selection means for selecting the positioning support image according to the examination content. A positioning support image can be automatically selected according to the examination content (for example, the region of interest is a hand, the whole human body).

  When the image projected on the top board is a positioning support image, a second image selection unit that selects the positioning support image at an arbitrary timing may be provided. An operator (for example, an engineer) can manually select a positioning support image at an arbitrary timing. Further, both the first image selection unit and the second image selection unit described above may be provided, and the selection of the positioning support image may be performed automatically or manually as appropriate.

  When the image projected on the top board is a positioning support image, image display / non-display switching means for switching display / non-display of the positioning support image may be provided. For example, in the case of positioning before fluoroscopy or before imaging (that is, before the start of examination), or when the positioning changes during fluoroscopy or imaging (that is, during examination), the positioning support image is displayed and the positioning is completed During or during the inspection, the positioning support image is hidden. Switching between display / non-display of the positioning support image may be performed manually by an operator (for example, an engineer) at an arbitrary timing, or may be automatically performed according to the examination state.

  When the image projected on the top board is a positioning support image, it is preferable to include display position adjusting means for adjusting the display position of the positioning support image based on the movement of the video system. By adjusting the display position of the positioning support image to the same position as the exposure area by the video system, it is possible to cope with positioning in consideration of the influence of the movement of the X-ray tube / X-ray detector of the video system.

  According to the X-ray fluoroscopic imaging apparatus of the present invention, the image projection unit that projects an arbitrary image on the top plate on which the subject is placed is provided on the side of the X-ray tube, thereby being projected on the top plate. The subject or the operator can see the image, and the subject or the operator can easily grasp the current fluoroscopic / imaging situation or conditions for setting the fluoroscopic / imaging.

1 is a schematic perspective view of an X-ray fluoroscopic apparatus according to an embodiment. 1 is a schematic front view of an X-ray fluoroscopic apparatus according to an embodiment. 1 is a schematic side view and a block diagram of an X-ray fluoroscopic apparatus according to an embodiment. This is an example in which a character string and a silhouette image of a part of a human body are displayed as a positioning support image from a projector. This is an example in which a silhouette image of the entire human body is displayed as a positioning support image from a projector. In this example, an X-ray image captured in the past is displayed as a positioning support image from the projector. It is an example of the aspect which attached the projector inside the collimator. 1 is a block diagram of an X-ray fluoroscopic apparatus according to an embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
1 is a schematic perspective view of an X-ray fluoroscopic apparatus according to the embodiment, FIG. 2 is a schematic front view of the X-ray fluoroscopic apparatus according to the embodiment, and FIG. 3 is an X-ray according to the embodiment. It is the schematic side view and block diagram of a fluoroscopic imaging device. In FIG. 3, illustration of the top plate holding unit and the like is omitted, and in FIG. 1 to FIG.

  As shown in FIGS. 1 to 3, the X-ray fluoroscopic apparatus includes a top plate 1 on which a subject M is placed, an X-ray tube 2 that emits X-rays toward the subject M, and a subject M. A flat panel X-ray detector (FPD: Flat Panel Detector) (hereinafter abbreviated as “FPD”) 3 for detecting X-rays transmitted through the light source. The FPD 3 is accommodated in the top plate 1. The top plate 1 corresponds to the top plate in the present invention, the X-ray tube 2 corresponds to the X-ray tube in the present invention, and the flat panel X-ray detector (FPD) 3 is the X-ray detection means in the present invention. It corresponds to.

  The X-ray fluoroscopic apparatus includes a support column 21 that supports the X-ray tube 2 and a main column 31 that supports the top plate 1. On the irradiation side of the X-ray tube 2, a collimator 22 that controls the irradiation field by adjusting the opening amount of the X-rays irradiated from the X-ray tube 2 is disposed. In the case of fluoroscopy, a dose of X-rays weaker than that of imaging is irradiated from the X-ray tube 2, the FPD 3 detects the X-rays, and a plurality of X-ray images are displayed on a monitor 13 (see FIG. 3). (Refer to the following) in real time. In the case of imaging, X-rays are emitted from the X-ray tube 2 and the FPD 3 detects the X-rays. The collimator 22 corresponds to the collimator in the present invention.

  The main column 31 is erected on a base 32 installed on the floor surface, and a top plate holding portion 33 for holding the top plate 1 so that it can be tilted (tilted) is disposed. The main column 31 is erected on the base 32 installed on the floor, and the top plate holding part 33 for holding the top plate 1 is disposed, so that the top plate 1 is held in the state where the top plate 1 is held. The FPD 3 accommodated in the FPD 3, the support 21 that supports the FPD 3 at the other end, the X-ray tube 2 supported at one end of the support 21, and the collimator 22 disposed on the irradiation side of the X-ray tube 2 are also supported.

  Within the top plate holding portion 33, a fan-shaped rack 34 that rotates and tilts the top plate 1 around the axis of the horizontal axis, a support shaft 35 that is inserted into the fan-shaped rack 34 and the main column 31, and a fan-shaped rack 34. A pinion 36 to be fitted, a rotating shaft 37 having the pinion 36 disposed at one end, and a motor 38 for rotating the rotating shaft 37 are accommodated. When the motor 38 rotates the rotating shaft 37, the pinion 36 disposed at one end of the rotating shaft 37 rotates, and the fan rack 34 fitted to the pinion 36 rotates the supporting shaft 35 in conjunction with the rotation of the pinion 36. It rotates around the support shaft 35 as a fulcrum. By rotating the sector rack 34 around the support shaft 35, the top plate 1 is rotated around the axis of the horizontal axis to be inclined.

  As described above, when the top plate 1 rotates and tilts around the horizontal axis, the top plate 1 can be tilted to a standing posture, a tilted posture, or a horizontal posture (an upright posture). In conjunction with the inclination of the top plate 1, the X-ray tube 2 and the FPD 3 are inclined, and the support column 21 that supports the X-ray tube 2 is also inclined. When the top plate 1 is tilted to the upright posture, the distance from the rotational position around the horizontal axis of the top plate 1 to the lower portion of the top plate 1 is the height from the support shaft 35 of the support column 31 to the lower portion of the support column 31. If it is longer than this, the standing posture cannot be realized. In this case, the standing posture can be realized by moving the top plate 1 upward.

  In addition, as shown in FIG. 3, the X-ray fluoroscopic apparatus has a support column 21 and an X-ray tube 2 and a collimator 22 supported on the column 21 along the longitudinal direction which is the body axis of the subject M. In order to translate the column, the column driving mechanism 4 that drives a motor (not shown) and the FPD drive that drives a motor (not shown) to translate the FPD 3 relative to the top plate 1 along the longitudinal direction. The mechanism 5, the top plate rotation mechanism 6 that drives the motor 38 (see FIG. 2) to tilt (tilt) the top plate 1, and the axis of the connecting shaft (that is, the axis orthogonal to the body axis) An X-ray tube rotating mechanism 7 that drives a motor (not shown) to rotate the X-ray tube 2 around the core, and an A / D converter that digitizes and extracts an X-ray detection signal that is a charge signal from the FPD 3 8 and A / D converter 8 The image processing unit 9 that performs various processes based on the X-ray detection signals that have been processed, the controller 10 that controls these components, the memory unit 11 that stores processed X-ray images, and the like, An input unit 12 that performs input settings, a monitor 13 that displays a processed X-ray image, and the like are provided. In addition, since the high voltage generation part etc. which generate | occur | produce the tube voltage and tube current of the X-ray tube 2 are not related to the characteristic part, illustration and description are abbreviate | omitted.

  The image processing unit 9 performs various types of image processing (for example, processing such as offset correction, lag correction, and gradation correction) on the X-ray detection signal obtained by the FPD 3. In the X-ray fluoroscopic apparatus, the FPD 3 detects X-rays transmitted through the subject M, and performs image processing in the image processing unit 9 based on the detected X-rays to create an X-ray image. M is seen or photographed.

  The controller 10 is configured by a central processing unit (CPU) and the like, and the memory unit 11 is configured by a storage medium represented by ROM (Read-only Memory), RAM (Random-Access Memory), and the like. Yes. The input unit 12 includes a pointing device represented by a mouse, a keyboard, a joystick, a trackball, a touch panel, and the like.

  Next, the configuration other than the above-described configuration (particularly the projector) in the X-ray fluoroscopic apparatus will be described with reference to FIGS. FIG. 4 is an example in which a character string and a silhouette image of a part of a human body are displayed as a positioning support image from the projector, and FIG. 5 is an example in which a silhouette image of the entire human body is displayed as a positioning support image from the projector. FIG. 6 is an example in which an X-ray image captured in the past is displayed as a positioning support image from the projector, and FIG. 7 is an example of an aspect in which a projector is attached inside the collimator. 8 is a block diagram of the X-ray fluoroscopic apparatus according to the embodiment.

  In addition, the X-ray fluoroscopic apparatus includes image projection means for projecting an arbitrary image on the top board 1 beside the X-ray tube 2. In the present embodiment, a positioning support image of the subject M (see FIGS. 2 and 3) will be described as an example of an image projected on the top board 1 by the image projecting unit.

  As an image projection means for projecting the positioning support image onto the top board 1, a projector 41 may be used as shown in FIGS. Further, a specific projector is not particularly limited, and a CRT projector, a liquid crystal projector, or the like may be used. Further, the type of light emitted from the projector 41 is not particularly limited. The arrangement position of the image projecting means represented by the projector 41 and the like is not particularly limited as long as it is beside the X-ray tube 2 and is provided in the X-ray tube 2 as shown in FIGS. Therefore, it may be attached outside the collimator 22 (see FIGS. 1 to 3), or may be attached at the position of the illumination field lamp inside the collimator 22 as shown in FIG. For example, the light irradiated from the projector 41 is reflected by the reflecting mirror 22 a of the collimator 22, and the projector 41 is attached so that the light passes through the leaf 22 b of the collimator 22. In FIG. 7, in order to clearly show the projector 41, the reflecting mirror 22a, and the leaf 22b inside the collimator 22, the casing of the collimator 22 is illustrated by a two-dot chain line. The projector 41 corresponds to the image projection means in this invention.

  In addition, about the top plate 1, it is formed with resin similarly to the past. Therefore, the positioning support image by the light irradiated from the projector 41 can be projected onto the top board 1 and the positioning support image displayed on the top board 1 can be easily confirmed. If possible, a part of the top plate 1 may be formed of a material that can be projected onto the screen, and the positioning support image may be projected onto the screen. The screen type is not particularly limited, as exemplified by a diffusion type (matte screen), a regression type (bead screen), a reflection type (pearl screen), and the like. By such screen projection, each image represented by the positioning support image from the projector 41 can be confirmed more clearly.

  Positioning support images include, for example, a silhouette image (see FIG. 4) of a part of a target region (region of interest) to be seen and photographed in an examination, a silhouette image (see FIG. 5) of the whole body (see FIG. 5), a patient The character string of the instruction to the patient ("Please place your hand over the image" in FIG. 4), X-ray image of a person with a body shape similar to the patient, X-ray image of the patient taken in the past (Fig. 6).

  In addition, as shown in FIG. 8, the X-ray fluoroscopic apparatus includes a fluoroscopic table 42, an image registration unit 43, an image database unit 44, positioning image selection units 45 and 46, a positioning image adjustment unit 47, and fluoroscopic table information. A management unit 52 and an inspection information management unit 53 are provided. The image registration unit 43 corresponds to the image registration unit in the present invention, and the positioning image selection unit 45 corresponds to the first image selection unit and the image display / non-display switching unit in the present invention, and the positioning image selection unit 46. Corresponds to the second image selection means in the present invention, the positioning image adjustment unit 47 corresponds to the display position adjustment means in the present invention, and the video system 51 corresponds to the video system in the present invention.

  The see-through table 42 includes the top plate 1 (see also FIGS. 1 to 6) described above, and also includes a video system 51 and a positioning image display unit 48. The video system 51 includes the above-described X-ray tube 2 (see also FIGS. 1 to 6) and the FPD 3 (see also FIGS. 1 to 3) disposed opposite thereto.

  The image registration unit 43 registers an arbitrary image as a positioning support image. Specifically, for example, the above-described silhouette image of the human body (see FIG. 4), the silhouette image of the entire human body (see FIG. 5), a character string for instructions to the patient (see FIG. 4), and similar to the patient An image (positioning support image) for assisting positioning, such as an X-ray image (see FIG. 6) of a person having a body shape or the patient taken in the past, is displayed in the image database unit 44 by an operation from the operator. The image registration unit 43 is configured to register.

  The image database unit 44 is configured to write and store a positioning support image registered by the image registration unit 43, an X-ray image of a specific patient imaged in the past, and the like. The positioning support image registered in the image database unit 44 is read out and sent to the positioning image selection units 45 and 46. When the positioning support image according to the examination content is automatically selected by the positioning image selection unit 45, the selected positioning support image is sent to the positioning image selection unit 45, and the positioning image selection unit 46 When the positioning support image is manually selected, the selected positioning support image is sent to the positioning image selection unit 46.

  The positioning image selection unit 45 selects a positioning support image according to the examination content. Specifically, based on the examination content stored in advance in the examination information management unit 53, the positioning support image corresponding to the examination content is automatically selected from the image database unit 44, and the subsequent positioning is performed. The positioning image selection unit 45 is configured to be sent to the image adjustment unit 47.

  In this embodiment, the positioning image selection unit 45 also has a function of switching display / non-display of the positioning support image. In the present embodiment, the positioning image selection unit 45 includes a central processing unit (CPU) different from the controller 10 (see FIG. 3) described above or the controller 10. Therefore, switching between display / non-display of the positioning support image is automatically performed in accordance with the inspection status of the inspection content stored in advance in the inspection information management unit 53. Of course, the function of switching the display / non-display of the positioning support image may not be a CPU or a controller. When the above-described input unit 12 (see FIG. 3) is configured with a function for switching the display / non-display of the positioning support image, the positioning support image is displayed / hidden by an operation from the operator at an arbitrary timing. Switch manually.

  The positioning image selection unit 46 selects a positioning support image at an arbitrary timing. Specifically, the positioning image selection unit is configured to manually select the positioning support image from the image database unit 44 by an operation from the operator at an arbitrary timing and send it to the subsequent positioning image adjustment unit 47. 46 is configured. The image registration unit 43 and the positioning image selection unit 46 are configured by the input unit 12 described above.

  The positioning image adjustment unit 47 adjusts the display position of the positioning support image based on the movement of the video system 51. Specifically, the position for displaying the positioning support image selected by the positioning image selection units 45 and 46 based on the position information of the video system 51 and the position information of the top board 1 acquired from the fluoroscopic table information management unit 52. Adjust.

  The positioning image display unit 48 receives the image data related to the positioning support image adjusted by the positioning image adjustment unit 47 and controls the image to be displayed on the top plate 1 by projecting it on the top plate 1. At this time, control is performed so that the positioning support image is displayed on the top board 1 at the display position adjusted by the positioning image adjustment unit 47. The positioning image adjustment unit 47 and the positioning image display unit 48 are each configured by a CPU different from the controller 10 described above, or are configured by the controller 10.

  The fluoroscopic table information management unit 52 is configured to write and store the current position information of the video system 51 and the position information of the top board 1. Moreover, the inspection information management unit 53 is configured to write and store the inspection contents and the like in advance. As the examination content, for example, the region of interest is information such as a hand, the entire human body, and the like. The image database unit 44, the fluoroscopic table information management unit 52, and the examination information management unit 53 are configured by the memory unit 11 (see FIG. 3) described above.

  According to the X-ray fluoroscopic apparatus according to the present embodiment, the image projection means (projector 41 in FIGS. 4 to 7) that projects an arbitrary image on the top plate 1 on which the subject M is placed is connected to the X-ray tube 2. Beside or inside. The image projection means (projector 41) is provided beside the X-ray tube 2 and an image indicating the current fluoroscopic / imaging status or conditions for setting fluoroscopic / imaging is set, and the set image is displayed on the top 1 By projecting upward, the subject M or the operator sees the image projected on the top board 1, and the subject M or the operator sets the current fluoroscopic / imaging status or conditions for setting the fluoroscopic / imaging. It can be easily grasped.

  As described above, the image projection means (projector 41) is arranged in the case where the image projection unit (projector 41) is further provided with the collimator 22 attached to the X-ray tube 2 and restricting X-rays emitted from the X-ray tube 2. The means (projector 41) includes an aspect (see FIGS. 4 to 6) attached outside the collimator 22, and an aspect (see FIG. 7) attached inside the collimator.

  In this embodiment, the image projected on the top board 1 by the image projecting means (projector 41) is a positioning support image of the subject M. When the image projected onto the top board 1 is a positioning support image as in the present embodiment, an image projecting means (projector 41) is provided beside the X-ray tube 2 and the positioning support image is displayed on the top board 1. By projecting onto the subject, the subject M and the operator can see the positioning support image, and the subject M and the operator can easily grasp the positioning.

  For example, the subject M, who is a patient, can visually recognize how to perform positioning by visually recognizing the positioning support image. This eliminates the trouble of the technician repeating voice instructions and the technician moving to the examination room and directly touching and guiding the patient, thereby shortening the time required for positioning and thus the entire examination. .

  In addition, by using the positioning support image, it is possible to perform the same positioning every time, or by displaying an X-ray image of the target region (region of interest) of the patient taken in the past as a positioning support image. The same positioning as when the image was taken can be reproduced and the inspection can be carried out, and the accuracy of follow-up observation across the month and day is improved.

  As a result, positioning can be performed easily and accurately, or the same positioning as the previous time can be easily and accurately reproduced. Further, since the image projecting means (projector 41) is provided beside the X-ray tube 2, the positioning support image is projected and displayed at the same position as the exposure area from the actual X-ray tube 2 to thereby display the X-ray tube. It is possible to cope with positioning in consideration of the influence of movement of 2.

  Further, when the image projected on the top board 1 is a positioning support image as in the present embodiment, an image registration means for registering an arbitrary image as a positioning support image (in this embodiment, the image registration unit 43). Is preferably provided. An operator (for example, an engineer) can register an arbitrary image as a positioning support image.

  In addition, when the image projected on the top board 1 is a positioning support image as in the present embodiment, first image selection means for selecting a positioning support image according to the inspection content (in this embodiment, for positioning) An image selection unit 45) is preferably provided. A positioning support image can be automatically selected according to the examination content (for example, the region of interest is a hand, the whole human body).

  In addition, when the image projected on the top board 1 is a positioning support image as in the present embodiment, second image selection means for selecting the positioning support image at an arbitrary timing (in this embodiment, the positioning image) A selection unit 46) may be provided. An operator (for example, an engineer) can manually select a positioning support image at an arbitrary timing. Further, as shown in FIG. 8 of the present embodiment, both the first image selection means (positioning image selection section 45) and the second image selection means (positioning image selection section 46) are provided, and the positioning support image is appropriately selected. The selection may be switched between automatic and manual.

  Further, when the image projected on the top board 1 is a positioning support image as in the present embodiment, image display / non-display switching means for switching between display / non-display of the positioning support image (positioning in this embodiment) The image selection unit 45 may also be provided. For example, in the case of positioning before fluoroscopy or before imaging (that is, before the start of examination), or when the positioning changes during fluoroscopy or imaging (that is, during examination), the positioning support image is displayed and the positioning is completed During or during the inspection, the positioning support image is hidden. Regarding the switching of the display / non-display of the positioning support image, as described above, when the function of switching the display / non-display of the positioning support image is configured by the input unit 12, an operator (for example, an engineer) can perform at any timing. When the function for switching the display / non-display of the positioning support image is configured by the CPU or the controller as in the present embodiment, it may be automatically performed according to the inspection state.

  Further, when the image projected on the top board 1 is a positioning support image as in the present embodiment, display position adjusting means (this book) that adjusts the display position of the positioning support image based on the movement of the video system 51 In the embodiment, it is preferable to provide a positioning image adjustment unit 47). By adjusting the display position of the positioning support image to the same position as the exposure area by the video system 51, the influence of the movement of the X-ray tube 2 and X-ray detector (FPD3 in this embodiment) of the video system is taken into consideration. It can correspond to positioning.

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

  (1) In the embodiment described above, the X-ray fluoroscopic apparatus has the configuration shown in FIGS. 1 to 3, but is not limited to the configuration shown in FIGS. 1 to 3. For example, the X-ray fluoroscopic apparatus may be a tomographic apparatus that performs tomographic imaging, or may be an apparatus that includes a mobile round-table cart.

  (2) In the above-described embodiment, a flat panel X-ray detector (FPD) has been described as an example of the X-ray detector. However, like the image intensifier (I.I), it is normally used. If it is an X-ray detector, it will not specifically limit.

  (3) In the above-described embodiments, the top plate is included in the configuration of the X-ray fluoroscopic apparatus, but the top plate is not necessarily included in the configuration of the X-ray fluoroscopic apparatus. For example, in the case where the X-ray fluoroscopic apparatus is an apparatus including a mobile round trolley, the top plate is not included in the configuration of the mobile round trolley.

  (4) In the above-described embodiment, the positioning support image of the subject has been described as an example of the image projected on the top board by the image projecting unit (the projector 41 in the embodiment). It is not limited to the positioning support image of the subject. The image may be an error message or warning, or may be an X-ray condition such as tube current (mA) or tube voltage (kV).

  (5) In the above-described embodiment, the image registration unit (image registration unit 43 in the embodiment) that registers an arbitrary image as a positioning support image is provided. However, for example, an image is not necessarily displayed when only a certain technique is performed. It is not necessary to provide registration means (image registration unit 43). However, when performing fluoroscopy and photographing with various techniques, it is preferable to provide image registration means (image registration unit 43) as in the embodiment.

  (6) In the embodiment described above, the first image selection means (positioning image selection unit 45 in the embodiment) that selects a positioning support image according to the examination content and the second image that selects the positioning support image at an arbitrary timing. Although both selection means (positioning image selection unit 46 in the embodiment) are provided, both are not necessarily provided, and both are not necessarily provided when only a certain technique is performed. However, when performing fluoroscopy and photographing with various techniques, as in the embodiment, the first image selection unit (positioning image selection unit 45) and the second image selection unit (positioning image selection unit 46). It is preferable to provide at least one of them.

  (7) In the above-described embodiment, the image display / non-display switching means for switching between display / non-display of the positioning support image (in the embodiment, the positioning image selection unit 45 is also used) is provided. It is not necessary to provide switching means (positioning image selection unit 45). However, when it is desired to manually switch between displaying / hiding the positioning support image at an arbitrary timing or automatically depending on the examination status, the image display / hidden switching means is provided as in the embodiment. It is preferable to provide.

  (8) In the above-described embodiment, the display position adjusting unit (positioning image adjusting unit 47 in the embodiment) that adjusts the display position of the positioning support image based on the movement of the video system is provided. It is not necessary to provide (positioning image adjusting unit 47). However, in order to cope with positioning in consideration of the influence of the movement of the video X-ray tube / X-ray detector, it is preferable to provide display position adjusting means (positioning image adjusting unit 47) as in the embodiment. .

  As described above, the present invention is suitable for a medical device apparatus.

DESCRIPTION OF SYMBOLS 1 ... Top plate 2 ... X-ray tube 22 ... Collimator 3 ... Flat panel type X-ray detector (FPD)
DESCRIPTION OF SYMBOLS 41 ... Projector 43 ... Image registration part 45,46 ... Positioning image selection part 47 ... Positioning image adjustment part 51 ... Video system M ... Subject

Claims (9)

An image system comprising an X-ray tube and an X-ray detector disposed opposite to the X-ray tube;
An X-ray fluoroscopic imaging apparatus that performs fluoroscopy or imaging with the video system,
An X-ray fluoroscopic imaging apparatus comprising image projection means for projecting an arbitrary image on a top plate on which a subject is placed, beside the X-ray tube. The X-ray fluoroscopic apparatus according to claim 1,
X-ray fluoroscopic imaging characterized by further comprising a collimator attached to the X-ray tube and restricting X-rays emitted from the X-ray tube, wherein the image projecting means is attached outside the collimator. apparatus. The X-ray fluoroscopic apparatus according to claim 1,
X-ray fluoroscopic imaging characterized by further comprising a collimator attached to the X-ray tube and restricting X-rays radiated from the X-ray tube, wherein the image projecting means is attached inside the collimator. apparatus. The X-ray fluoroscopic apparatus according to any one of claims 1 to 3,
The X-ray fluoroscopic imaging apparatus, wherein the image projected on the top board by the image projecting means is a positioning support image of the subject. The X-ray fluoroscopic apparatus according to claim 4,
An X-ray fluoroscopic apparatus comprising image registration means for registering an arbitrary image as the positioning support image. The X-ray fluoroscopic apparatus according to claim 4 or 5,
An X-ray fluoroscopic apparatus comprising: first image selection means for selecting the positioning support image according to examination contents. The X-ray fluoroscopic apparatus according to any one of claims 4 to 6,
An X-ray fluoroscopic apparatus comprising: second image selection means for selecting the positioning support image at an arbitrary timing. The X-ray fluoroscopic apparatus according to any one of claims 4 to 7,
An X-ray fluoroscopic apparatus comprising image display / non-display switching means for switching between display / non-display of the positioning support image. The X-ray fluoroscopic apparatus according to any one of claims 4 to 8,
An X-ray fluoroscopic apparatus comprising: a display position adjusting unit that adjusts a display position of the positioning support image based on movement of the video system.