JP2012045332A - Radiographic image capturing system, radiographic image capturing method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To capture a long radiographic image by imaging at a plurality of imaging positions spaced at appropriate intervals without time and efforts when a kind or a direction of a radiographic apparatus to be used is altered in capturing the long radiographic image by capturing a plurality of radiographic images by moving the radiographic apparatus.SOLUTION: In performing long-length radiography for capturing a plurality of radiographic images at the plurality of different imaging positions to obtain the long radiographic image by moving a cassette housing 46 in a prescribed direction while an attachable and detachable electronic cassette 32 for acquiring the radiographic image of a subject 30 by detecting radiation that is emitted from a radiation source and transmits through the subject is loaded on the cassette housing 46, a length in the prescribed direction in an imaging region of the electronic cassette 32 loaded on the cassette housing 46 is specified to determine an interval between the plurality of the imaging positions based on the specified length, and the cassette housing 46 is moved to capture the radiographic image at each of the plurality of imaging positions spaced at determined intervals.

Description

  The present invention relates to a radiation image capturing system, a radiation image capturing method, and a program for capturing a radiation image indicated by radiation emitted from a radiation source and transmitted through a subject.

  2. Description of the Related Art A system that captures a radiographic image using a cassette that stores a film or an imaging plate is known. In recent years, radiation detectors such as flat panel detectors (FPDs), which can arrange radiation sensitive layers on TFT (Thin Film Transistor) active matrix substrates and convert radiation directly into digital data, have been put into practical use. A system for taking a radiographic image with a cassette is also known.

  By the way, when taking full-length lower limb photography and whole spine photography for the purpose of bone measurement etc. as medical image photography, since the photographing part of the subject covers a wide range, long photography is used to grasp the whole. There is a need to do. As a technique for performing long imaging, a radiation source for irradiating radiation, a radiation image detector for detecting radiation irradiated from the radiation source and transmitted through the subject, or at least one of the subject with respect to the body axis direction of the subject A parallel movement mechanism that can move substantially in parallel, and a cooperative movement mechanism that moves the radiation source to a position facing the radiation image detector so as to cooperate with the movement of the radiation image detector. There is known an apparatus that emits radiation to a radiation image detector at a plurality of positions having different relative positions. (See Patent Document 1).

JP 2005-270277 A

  In the technique disclosed in Patent Document 1, the type (size) of the radiation detector is set in advance, and long imaging is performed by moving the cassette in accordance with the movement distance (interval between a plurality of imaging positions). However, when changing the size and orientation of the cassette to be used according to the subject or the like, it is necessary to manually set the moving distance, which requires time and effort for calculation and setting. For example, when a cassette that is not square is attached and removed, the cassette is used in a vertically long state to reduce the number of shots and give priority to the image quality / dose surface, and when the subject is wide horizontally (for example, a person with a large body) Etc.), since the moving distance is different from the case where the cassette is photographed in the horizontally long state, it is preferable that the moving distance can be determined and changed smoothly.

  The present invention has been made to solve the above problems, and in the case of taking a long radiographic image by taking a plurality of radiographic images at different imaging positions while moving the radiographic apparatus, Even if the type and orientation of the radiation imaging device to be used are changed, a radiation imaging system capable of capturing a long radiation image by capturing images at a plurality of imaging positions with appropriate intervals without taking time and effort An object of the present invention is to provide a radiographic imaging method and program.

  To achieve the above object, the radiographic imaging system according to the first aspect of the present invention is a detachable radiographic apparatus that detects a radiation irradiated from a radiation source and transmitted through a subject to acquire a radiographic image of the subject. When performing long imaging to obtain a long radiation image by capturing a plurality of radiographic images at a plurality of different imaging positions while moving the mounting section in a predetermined direction with the mounting section mounted on the mounting section. A specifying unit that specifies a length in the predetermined direction of an imaging region of the radiation imaging apparatus mounted on the unit, and a determination that determines an interval between the plurality of imaging positions based on the length specified by the specifying unit Means, and moving means for moving the mounting portion so that a radiographic image is taken at each of a plurality of imaging positions separated by an interval determined by the determining means.

  According to such a configuration, in order to determine the distance between the plurality of imaging positions by specifying the length in the moving direction of the mounting portion in the imaging region of the radiographic apparatus, the type of the radiographic apparatus used for long imaging, Even if the orientation is changed, it is possible to take a long radiographic image by taking images at a plurality of imaging positions at appropriate intervals without taking time and effort.

  In the present invention, as in the invention described in claim 2, the determining means determines the length specified by the specifying means or a length shorter than the length specified by the specifying means as the interval. You may make it do.

  According to a third aspect of the present invention, there is further provided designation means for designating a length of the long radiation image in the predetermined direction, and the determination means has a length in the predetermined direction as the designation means. The interval may be determined so that the long radiation image having a length equal to or longer than the length designated by the above is obtained.

  In addition, as in the invention described in claim 4, there is further provided an index drawing cover capable of covering a movable range of the mounting portion and in which a plurality of indexes are drawn side by side in the predetermined direction, and the specifying unit Is based on an image indicating an index included in a radiographic image obtained when provisional imaging is performed in a state in which a movable range of the mounting unit on which the radiation imaging apparatus is mounted is covered with the index drawing cover, The length may be specified.

  According to a fifth aspect of the present invention, the mounting unit includes a detecting unit that detects an orientation of the mounted radiographic apparatus with respect to the mounting unit, and the specifying unit is mounted on the mounting unit. A type acquisition unit that acquires a type of the radiographic apparatus to be performed, the longitudinal dimension and the lateral dimension of the imaging region of the radiographic apparatus determined according to the type acquired by the type acquisition unit, and the detection The length in the predetermined direction of the imaging region of the radiation imaging apparatus may be specified based on the direction detected by the means.

  According to a sixth aspect of the present invention, the radiation imaging apparatus is provided with detection means for detecting an orientation of the radiation imaging apparatus with respect to the mounting unit, and the specifying unit is a type of radiation imaging apparatus to be mounted on the mounting unit. A size acquisition unit that acquires the length of the imaging region of the radiation imaging apparatus determined in accordance with the type acquired by the type acquisition unit, the size in the short direction, and the direction detected by the detection unit Based on the above, the length in the predetermined direction of the imaging region of the radiation imaging apparatus may be specified.

  According to a seventh aspect of the present invention, the radiation imaging apparatus is provided with storage means for storing information indicating the type of the radiation imaging apparatus in advance, and the type acquisition means is provided for the radiation imaging apparatus mounted on the mounting portion. The type may be acquired by reading the information from the storage unit.

  Further, as in the invention described in claim 8, further comprising a setting means for setting a type of radiation imaging apparatus to be mounted on the mounting portion, wherein the type acquisition means has the type set by the setting means. You may make it acquire and use as a kind of radiography apparatus with which the said mounting part was mounted | worn.

  Further, as in a ninth aspect of the invention, a long imaging region that can cover the movable range of the mounting unit and is determined according to the type of the radiographic apparatus and the mounting direction, and the length A shooting area drawing cover on which each of the shooting areas at the plurality of shooting positions for shooting the shooting area of the scale is drawn may be further provided.

  The radiographic image capturing method of the invention of claim 10 is a state in which a detachable radiographic apparatus that detects a radiation irradiated from a radiation source and transmitted through a subject and acquires a radiographic image of the subject is mounted on the mounting portion. When performing long imaging to obtain a long radiation image by capturing a plurality of radiographic images at a plurality of different imaging positions while moving the mounting unit in a predetermined direction, the radiation imaging mounted on the mounting unit The length of the imaging region of the apparatus in the predetermined direction is specified, the interval between the plurality of imaging positions is determined based on the specified length, and each of the plurality of imaging positions separated by the determined interval The mounting portion is moved so that a radiographic image is taken.

  Therefore, according to the present invention, since it operates in the same manner as the invention described in claim 1, the type and orientation of the radiation imaging apparatus used for long imaging is changed as in the invention described in claim 1. In addition, it is possible to take a long radiographic image by taking images at a plurality of imaging positions at appropriate intervals without taking multiple hands.

  According to a further aspect of the invention, there is provided a computer equipped with a detachable radiation imaging apparatus that detects radiation that has been irradiated from a radiation source and transmitted through a subject and obtains a radiation image of the subject. When performing long imaging to obtain a long radiation image by capturing a plurality of radiographic images at a plurality of different imaging positions while moving the mounting unit in a predetermined direction, the radiation imaging apparatus mounted on the mounting unit Identification means for specifying the length of the imaging region in the predetermined direction, determination means for determining intervals between the plurality of imaging positions based on the length specified by the specification means, and intervals determined by the determination means And a moving means for moving the mounting portion so that a radiographic image is captured at each of a plurality of imaging positions separated from each other.

  Therefore, according to the present invention, since the computer can be operated in the same manner as the invention described in claim 1, the type of radiation imaging apparatus used for long imaging, Even if the orientation is changed, it is possible to take a long radiographic image by taking images at a plurality of imaging positions at appropriate intervals without taking time and effort.

  According to the present invention, when a long radiographic image is captured by capturing a plurality of radiographic images at a plurality of different imaging positions while moving the radiographic apparatus, the type of radiographic apparatus used for long imaging Even if the orientation is changed, it is possible to take an image of a long radiation image by taking images at a plurality of imaging positions at an appropriate interval without taking time and effort.

It is a block diagram which shows the structure of the radiographic imaging system which concerns on embodiment. It is a permeation | transmission perspective view which shows the internal structure of the electronic cassette concerning embodiment. It is a top view of the cassette holding | maintenance part which concerns on embodiment. (A) is a figure which shows the state which mounted | worn with the rectangular electronic cassette with respect to the cassette holding | maintenance part shown in FIG. 3, (B) is this electronic with respect to the cassette holding | maintenance part shown in FIG. It is a figure which shows the state which mounted | wore with the cassette vertically. It is a figure which shows an example of the cover by which the image in which each of the imaging | photography area | region in the some imaging | photography position for image | photographing a long imaging | photography area | region and this long imaging | photography area | region was drawn was drawn. It is a block diagram which shows the principal part structure of the electrical system of the radiographic imaging system which concerns on embodiment. It is a figure which shows an example of the processing routine performed with a console. It is explanatory drawing explaining the movement procedure of the electronic cassette (cassette accommodating part) in the case of image | photographing in three imaging positions. It is a figure which shows the other example of a cassette holding | maintenance part. (A) is a figure which shows the state which mounted | worn with the rectangular electronic cassette with respect to the cassette holding | maintenance part shown in FIG. 9, (B) is this electronic with respect to the cassette holding | maintenance part shown in FIG. It is a figure which shows the state which mounted | wore with the cassette vertically. It is a figure which shows the other example of a cover. It is a figure which shows an example of the table in which the value of the space | interval d was registered corresponding to the kind and mounting direction of an electronic cassette.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a diagram illustrating an example of an arrangement state of each device in a radiographic image capturing system (hereinafter referred to as “imaging system”) according to the present embodiment. 1A shows a side view of the photographing stand 45, and FIG. 1B shows a front view of the photographing stand 45. As shown in FIG.

  The imaging system captures a radiographic image by an operation of a doctor, a radiographer, or the like (hereinafter referred to as a photographer). The imaging system transmits a radiation generator 34 that irradiates the subject with radiation X having a dose in accordance with the exposure conditions from a radiation source 130 (see also FIG. 6), and the subject's imaging target site. A portable radiographic apparatus incorporating a radiation detector 60 (see also FIG. 2 and FIG. 6) that generates radiation by absorbing the radiation X and generates image information indicating a radiation image based on the generated charge amount. (Hereinafter referred to as an electronic cassette) 32, an imaging table 45 that holds the electronic cassette 32, an electronic cassette 32, a radiation generator 34, and a console 42 that controls the imaging table 45.

  The imaging table 45 includes a base unit 10. The base unit 10 is provided with rails along the body axis direction (vertical direction in FIG. 1) of the subject 30, and supports the slide coupling unit 12 so as to be slidable (movable). A slide rail portion 14 is connected to the slide connecting portion 12. Therefore, when the slide connecting part 12 is moved in the vertical direction along the rail of the base part 10, the slide rail part 14 is moved in the vertical direction integrally with the slide connecting part 12 (first slide).

  Furthermore, a rail is provided on the slide rail portion 14 along the vertical direction, and holds the slide support portion 16 so as to be movable in the vertical direction. The slide support portion 16 supports a cassette storage portion 46 that can store the electronic cassette 32. Accordingly, when the slide support portion 16 is moved in the vertical direction along the rail provided on the slide rail portion 14, the cassette storage portion 46 is moved in the vertical direction integrally with the slide support portion 16 (second second). slide).

  In the present embodiment, the first slide is manually performed by the photographer, and is performed to adjust the height of the slide rail portion 14 according to the size (height) of the subject 30. The second slide is performed by a motor (not shown) provided on the imaging table 45. When a long radiographic image is captured, the cassette storage unit 46 is moved to capture images at a plurality of imaging positions. Done to do.

  The cassette housing part 46 has an insertion part 46A, and a cassette holding part 40 capable of holding the electronic cassette 32 is inserted from the insertion part 46A (with the upper holding part 20 shown in FIG. 3 facing upward). The cassette storage section 46 is slidable in the vertical direction as described above in a state in which the cassette holding section 40 inserted from the insertion section 46A is stored.

  The cassette holding unit 40 is configured to hold the electronic cassette 32. That is, in the imaging system according to the present embodiment, the cassette storage unit 46 is placed in the body axis direction of the subject 30 (this embodiment) with the cassette holding unit 40 holding the electronic cassette 32 mounted on the cassette storage unit 46. In the embodiment, the apparatus is configured to be capable of long imaging in which a plurality of radiographic images are captured at a plurality of different imaging positions while moving in the vertical direction) to obtain a long radiation image.

  Here, the configuration of the electronic cassette 32 will be described. FIG. 2 shows an internal configuration of the electronic cassette 32 according to the present exemplary embodiment.

  As shown in the figure, the electronic cassette 32 includes a housing 54 made of a material that transmits the radiation X, and has a waterproof and airtight structure. When the electronic cassette 32 is used in an operating room or the like, there is a risk that blood and other germs may adhere. Therefore, one electronic cassette 32 can be used repeatedly by sterilizing and cleaning the electronic cassette 32 as necessary with a waterproof and hermetic structure. A connection terminal 32 </ b> A is provided on a side surface of the housing 54.

  Inside the housing 54 are a grid 58 for removing scattered radiation of the radiation X by the patient from the irradiation surface 56 side of the housing 54 irradiated with the radiation X, and a radiation detector 60 for detecting the radiation X transmitted through the patient. , And a lead plate 62 that absorbs backscattered radiation X is disposed in order. Note that the irradiation surface 56 of the housing 54 may be configured as a grid 58.

  In addition, on the other end side inside the housing 54, an electronic circuit including a microcomputer and a case 31 that houses a power supply unit 96 that can be charged are disposed. The radiation detector 60 and the electronic circuit are operated by electric power supplied from the power supply unit 96 disposed in the case 31. In order to avoid various circuits housed in the case 31 from being damaged by the radiation X irradiation, it is desirable to arrange a lead plate or the like on the irradiation surface 56 side of the case 31.

  Next, the configuration of the cassette holding unit 40 that holds the electronic cassette 32 will be described.

  FIG. 3 shows a configuration of the cassette holding unit 40 according to the present embodiment.

  The cassette holding unit 40 includes an upper holding unit 20 and a lower holding unit 21. The upper holding unit 20 is provided with four switches 24A, 24B, 24C, and 24D. Hereinafter, when the description is made without distinguishing each switch, the alphabets A to D at the end are omitted. Each switch 24 is configured to be pushed into the upper holding portion 20 when pushed up from below while protruding from the upper holding portion 20. The switch 24 is turned off when it protrudes from the upper holding portion 20 and is turned on when it is pushed into the upper holding portion 20.

  One end of each of the support portions 22 </ b> A and 22 </ b> B is connected to both end portions of the upper holding portion 20. The other end of the support portion 22A is connected to one end of the elastic member 23A, and the other end of the support portion 22B is connected to one end of the elastic member 23B. The other end of each of the elastic member 23 </ b> A and the elastic member 23 </ b> B is connected to both end portions of the lower holding portion 21. The elastic members 23A and 23B are constituted by, for example, a spring or the like, and extend and contract in the vertical direction. The elastic members 23A and 23B are configured such that the distance between the upper holding portion 20 and the lower holding portion 21 can be expanded and contracted in the vertical direction.

  Both end portions of the lower holding portion 21 have a plurality of steps and are formed in symmetrical left and right steps. The plurality of steps are set so as to correspond to the widths in the longitudinal direction and the short direction of the plurality of types of electronic cassettes 32 (if the number of electronic cassettes 32 to be used is one, it may be one). Is formed. In the present embodiment, the dimensions (vertical and horizontal dimensions) of the photographing area of the electronic cassette 32 are defined according to the type of the electronic cassette 32.

  FIG. 4A shows a rectangular electronic cassette 32 (for example, an electronic cassette 32 whose shooting area is a half-cut size) sideways with respect to the cassette holding unit 40 (the short direction of the electronic cassette 32 is the moving direction of the electronic cassette 32). 4B is a diagram illustrating a state in which the electronic cassette 32 is mounted vertically with respect to the cassette holding portion 40 (the longitudinal direction of the electronic cassette 32 is the moving direction of the electronic cassette 32). It is a figure which shows the state mounted | worn in direction.

  As shown in FIG. 4A, when the electronic cassette 32 is mounted sideways with respect to the cassette holding portion 40, all of the four switches 24A, 24B, 24C, 24D are pushed into the upper holding portion 20, Turns on. Further, as shown in FIG. 4B, when the electronic cassette 32 is mounted vertically with respect to the cassette holding unit 40, only the four switches 24A are turned off, and the three switches 24B, 24C, 24D The switches are pushed into the upper holding unit 20 and are turned on.

  As described above, in the present embodiment, the mounting direction of the electronic cassette 32 with respect to the cassette holding unit 40 (hereinafter sometimes simply referred to as the mounting direction) is detected by the ON / OFF state of the switch 24 provided in the cassette holding unit 40. It is possible to do. Information indicating the ON / OFF state of each switch 24 (hereinafter referred to as switch information) is transmitted to the console 42 via a connection terminal 40A (see also FIG. 6) provided in the cassette holding unit 40.

  The storage means such as the HDD 110 of the console 42 stores the type and mounting direction of the electronic cassette 32 and the ON / OFF state information of the four switches 24 in association with each other. The console 42 can specify the mounting direction from the switch information transmitted from the cassette holding unit 40 and the type of the electronic cassette 32.

  In addition, it is comprised in the cassette storage part 46 which concerns on this Embodiment so that the removable cover 18 can be mounted | worn. As shown in FIG. 1, when the cover 18 is attached to the cassette storage unit 46, the cover 18 can cover the movable range of the cassette storage unit 46 while hanging downward from the upper end of the cassette storage unit 46. It is said to be a big size.

  The cover 18 has a long radiographic imaging region (hereinafter referred to as a long radiographic region) according to the type of the electronic cassette 32 to be attached to the cassette holding unit 40 and the mounting direction of the electronic cassette 32 with respect to the cassette holding unit 40. In this case, the long photographing region and the photographing regions at a plurality of photographing positions for photographing the long photographing region are drawn.

  In the example shown in FIG. 5, a long shooting area and a plurality of shootings for shooting the long shooting area when the electronic cassette 32 whose shooting area is half-cut size is mounted vertically with respect to the cassette holding unit 40. An image 18A showing each of the shooting regions at the position, a long shooting region when the electronic cassette 32 is mounted sideways with respect to the cassette holding unit 40, and a plurality of shootings for shooting the long shooting region An image 18B showing each of the shooting regions at the position is drawn. Here, each imaging region is drawn so that a part of each imaging region imaged at adjacent imaging positions overlaps.

  For example, when a long shooting area is uniquely determined according to the type and mounting direction of the electronic cassette 32 to be mounted on the cassette holding unit 40, a cover on which each of the long shooting area and each shooting area is drawn. By attaching and using 18, the photographer can easily determine which electronic cassette 32 should be attached in which direction with reference to the cover 18.

  Next, with reference to FIG. 6, the configuration of the main part of the electrical system of the imaging system according to the present embodiment will be described.

  As shown in the figure, the radiation detector 60 built in the electronic cassette 32 is configured by laminating a photoelectric conversion layer that absorbs radiation X and converts it into charges on a TFT active matrix substrate 66. The photoelectric conversion layer is made of amorphous a-Se (amorphous selenium) containing, for example, selenium as a main component (for example, a content rate of 50% or more), and when irradiated with radiation X, a charge corresponding to the amount of irradiated radiation. By generating a certain amount of charge (electron-hole pairs) internally, the irradiated radiation X is converted into a charge. The radiation detector 60 is indirectly charged using a phosphor material and a photoelectric conversion element (photodiode) instead of the radiation-charge conversion material that directly converts the radiation X such as amorphous selenium into an electric charge. May be converted to As phosphor materials, gadolinium sulfate (GOS) and cesium iodide (CsI) are well known. In this case, radiation X-light conversion is performed using a phosphor material, and light-charge conversion is performed using a photodiode of a photoelectric conversion element.

  In addition, on the TFT active matrix substrate 66, a pixel unit 74 (in FIG. 6) includes a storage capacitor 68 for storing the charge generated in the photoelectric conversion layer and a TFT 70 for reading out the charge stored in the storage capacitor 68. A number of photoelectric conversion layers corresponding to the individual pixel portions 74 are schematically shown as the photoelectric conversion portions 72.) A large number of photoelectric conversion layers are arranged in a matrix, and photoelectric conversion occurs as the electronic cassette 32 is irradiated with the radiation X. The charges generated in the layers are stored in the storage capacitors 68 of the individual pixel portions 74. As a result, the image information carried on the radiation X irradiated to the electronic cassette 32 is converted into charge information and held in the radiation detector 60.

  The TFT active matrix substrate 66 is extended in a certain direction (row direction), a plurality of gate wirings 76 for turning on / off the TFTs 70 of the individual pixel portions 74, and a direction orthogonal to the gate wirings 76. A plurality of data wirings 78 are provided so as to read the stored charge from the storage capacitor 68 via the TFT 70 which is extended in the (column direction) and turned on. Individual gate lines 76 are connected to a gate line driver 80, and individual data lines 78 are connected to a signal processing unit 82. When charges are accumulated in the storage capacitors 68 of the individual pixel portions 74, the TFTs 70 of the individual pixel portions 74 are sequentially turned on in units of rows by a signal supplied from the gate line driver 80 via the gate wiring 76. The charge stored in the storage capacitor 68 of the pixel unit 74 for which is turned on is transmitted as an analog electrical signal through the data wiring 78 and input to the signal processing unit 82. Accordingly, the charges accumulated in the storage capacitors 68 of the individual pixel portions 74 are sequentially read out in units of rows.

  On the other hand, the signal processing unit 82 includes an amplifier and a sample hold circuit provided for each data wiring 78, and the charge signal transmitted through the individual data wiring 78 is amplified by the amplifier and then supplied to the sample hold circuit. Retained. Further, a multiplexer and an A / D (analog / digital) converter are sequentially connected to the output side of the sample and hold circuit, and the charge signals held in the individual sample and hold circuits are sequentially (serially) input to the multiplexer. The digital image data is converted by an A / D converter.

  An image memory 90 is connected to the signal processing unit 82, and image data output from the A / D converter of the signal processing unit 82 is sequentially stored in the image memory 90. The image memory 90 has a storage capacity capable of storing image data for a plurality of frames, and image data obtained by imaging is sequentially stored in the image memory 90 every time a radiographic image is captured.

  The image memory 90 is connected to a cassette control unit 92 that controls the operation of the entire electronic cassette 32. The cassette control unit 92 includes a microcomputer, and includes a CPU (central processing unit) 92A, a memory 92B including a ROM (Read Only Memory) and a RAM (Random Access Memory), an HDD (Hard Disk Drive), and a flash memory. A non-volatile storage unit 92 </ b> C is provided. The storage unit 92C stores in advance type information indicating its own type. The storage unit 92 </ b> C also stores a program for transmitting stored type information to the console 42 via the communication unit 95 when a request for type information is received from the console 42.

  A communication unit 95 is connected to the cassette control unit 92. The communication unit 95 is connected to the connection terminal 32A, and controls transmission of various information to and from the console 42 via the connection terminal 32A.

  The electronic cassette 32 is provided with a power supply unit 96, and the various circuits and elements described above (gate line driver 80, signal processing unit 82, image memory 90, wireless communication unit 94, cassette control unit 92, etc.) The power is supplied from the power supply unit 96. The power supply unit 96 incorporates the above-described battery (secondary battery) 96A so as not to impair the portability of the electronic cassette 32, and supplies power from the charged battery 96A to various circuits and elements. In FIG. 6, the power supply unit 96 and various circuits and wirings for connecting each element are not shown.

  On the other hand, the console 42 is configured as a server computer, and includes a display 100 that displays an operation menu, captured radiographic images, and the like, and a plurality of keys, and inputs various information and operation instructions. An operation panel 102.

  The console 42 according to the present embodiment includes a CPU 104 that controls the operation of the entire apparatus, a ROM 106 that stores various programs including a control program in advance, a RAM 108 that temporarily stores various data, and various data. It includes an HDD 110 that stores and holds, a display driver 112 that controls display of various types of information on the display 100, and an operation input detection unit 114 that detects an operation state of the operation panel 102. In addition, the console 42 is connected to the connection terminal 42A, and a communication interface (I / F) unit 116 that transmits and receives various kinds of information such as an exposure condition to and from the radiation generator 34 via the connection terminal 42A and a communication cable. And various information of switch information between the cassette communication unit 118 that transmits and receives various information such as exposure conditions and image data to and from the electronic cassette 32 and the cassette holding unit 40 that holds the electronic cassette 32 And a holding unit communication unit 122. Further, the console 42 includes a motor control unit 120 that controls a motor driver 44 that drives a motor for moving the slide support unit 16 described above along the rail of the slide rail unit 14.

  The CPU 104, ROM 106, RAM 108, HDD 110, display driver 112, operation input detection unit 114, communication I / F unit 116, cassette communication unit 118, motor control unit 120, and holding unit communication unit 122 are mutually connected via the system bus BUS. It is connected to the. Therefore, the CPU 104 can access the ROM 106, RAM 108, and HDD 110, controls display of various information on the display 100 via the display driver 112, and the radiation generator 34 via the communication I / F unit 116. Control of transmission / reception of various information to / from, control of transmission / reception of various information to / from the electronic cassette 32 via the cassette communication unit 118, control of transmission / reception of various information to / from the cassette holding unit 40 via the holding unit communication unit 122, The motor driver 44 can be controlled via the motor control unit 120. Further, the CPU 104 can grasp the operation state of the user with respect to the operation panel 102 via the operation input detection unit 114.

  The radiation generator 34 is provided with a connection terminal 34 </ b> A for communicating with the console 42. The console 42 is provided with a connection terminal 42 </ b> A for communicating with the radiation generator 34. The connection terminal 34A of the radiation generator 34 and the connection terminal 42A of the console 42 are connected by a communication cable. The radiation generator 34 also includes a communication I / F unit 132 that transmits and receives various types of information such as exposure conditions between the radiation source 130 that emits the radiation X and the console 42, and the communication I / F unit 132. And a radiation source control unit 134 for controlling the radiation source 130 based on the received exposure conditions.

  The radiation source control unit 134 is configured by a microcomputer and stores the received exposure conditions and posture information. The exposure conditions received from the console 42 include information such as tube voltage, tube current, and irradiation period. The radiation source controller 134 irradiates the radiation X from the radiation source 130 based on the received exposure conditions.

  The radiation source 130 includes an X-ray tube and a collimator, and a laser light source that irradiates a laser for specifying a vertical range (hereinafter referred to as a long imaging range) of a long imaging region in the vicinity of the collimator. 136 is provided. The laser light source 136 emits red or green laser light. Laser irradiation by the laser light source 136 is controlled by the laser control unit 138.

  Furthermore, the radiation generator 34 includes an operation unit 140 and a swing mechanism unit 142. The swing mechanism unit 142 includes a swing shaft, and swings the radiation source 130 and the laser light source 136 in the vertical direction using the swing shaft as a rotation axis. The head swing mechanism 142 enables the irradiation position of the radiation X of the radiation source 130 and the laser light of the laser light source 136 to be changed. The photographer operates the operation unit 140 to operate the swinging operation of the swing mechanism unit 142 or to input an instruction for turning on / off the laser light source 136 to the laser control unit 138. The operation unit 140 includes a button 140A (see also FIG. 1). During the swinging operation by the swing mechanism 142, the photographer can specify the long shooting range by pressing the button 140A with the laser light source 136 turned on. The swing mechanism unit 142 operates based on instruction information received from the console 42 via the communication I / F unit 132 in addition to the operation by the operation unit 140.

  The cassette holding unit 40 includes a connection terminal 40A, a detection unit 25, and a communication unit 26. The communication unit 26 is connected to the holding unit communication unit 122 of the console 42 via the connection terminal 40A. The detection unit 25 includes the above-described four switches 24A, 24B, 24C, and 24D, and a signal processing unit that generates switch information by converting the ON / OFF state of each switch 24 into a digital signal. . The switch information converted by the signal processing unit is transmitted to the console 42 via the communication unit 26.

  Next, the operation of the imaging system according to the present embodiment will be described.

  First, when the photographer connects the electronic cassette 32 and the console 42, the console 42 starts executing the processing routine shown in FIG. A program for this processing routine is stored in the ROM 106 and executed by the CPU 104.

  In step 200, the type information stored in the electronic cassette 32 is read. Specifically, a request for type information is transmitted to the electronic cassette 32. When receiving the request for the type information, the cassette control unit 92 of the electronic cassette 32 reads out the type information stored in advance in the storage unit 92C and transmits it to the console 42 via the communication unit 95. Thereby, the console 42 acquires the type information indicating the type of the electronic cassette 32 from the electronic cassette 32.

  In step 202, after the electronic cassette 32 is set in the cassette holding unit 40, switch information is requested from the cassette holding unit 40, and the switch information is acquired from the cassette holding unit 40.

  In step 204, the mounting direction of the electronic cassette 32 is specified based on the type information acquired from the electronic cassette 32 and the switch information acquired from the cassette holding unit 40, and the type information of the electronic cassette 32 and the electronic cassette 32 Based on the mounting direction, the vertical length of the photographing area of the electronic cassette 32 is specified. Hereinafter, an example of a method for specifying the length in the vertical direction of the imaging region of the electronic cassette 32 will be specifically described.

  As described above, the vertical and horizontal dimensions of the imaging area of the electronic cassette 32 are defined by the type of the electronic cassette 32. Therefore, when the shooting area of the electronic cassette 32 is rectangular, the length of the shooting area in the longitudinal direction and the short direction can be determined by the type of the electronic cassette 32. A table in which the type information is associated with the length in the longitudinal direction and the short direction of the imaging region is stored in advance in the HDD 110 of the console 42 and is stored in association with the type information acquired from the electronic cassette 32. By reading the lengths of the area in the longitudinal direction and the short direction, the dimensions of the imaging area of the electronic cassette 32 attached (held) to the cassette holding unit 40 are acquired.

  Next, the mounting orientation of the electronic cassette 32 with respect to the cassette holding unit 40 is determined from the ON / OFF state of each switch 24 indicated by the switch information received from the cassette holding unit 40. In the example shown in FIG. 4A, since all the switches 24 are in the ON state, it is determined that they are in the horizontal direction. In the example shown in FIG. 4B, only the switch 24A is in the OFF state, and the other switches 24B , 24C and 24D are in the ON state, and thus are determined to be in the vertical orientation.

  When the mounting direction of the electronic cassette 32 indicates the vertical orientation, the length in the longitudinal direction of the imaging area of the electronic cassette 32 is specified as the vertical length of the imaging area of the electronic cassette 32. In addition, when the detection result of the mounting direction of the electronic cassette 32 received from the cassette holding unit 40 indicates the horizontal orientation, the length in the short direction of the shooting area of the electronic cassette 32 is set as the shooting area of the electronic cassette 32. It is specified as the length in the vertical direction. When the shooting area of the electronic cassette 32 is a square, the length of one side of the shooting area is stored in the table, and the length of one side of the shooting area is kept as it is without determining the mounting direction. The vertical length of the imaging area of the electronic cassette 32 is used.

  Next, in step 206, information indicating the upper end position and the lower end position of the long shooting range (long shooting range information) is acquired. This will be specifically described below.

  The photographer sets the electronic cassette 32 in the cassette holding unit 40 and then stores the cassette holding unit 40 in the cassette storage unit 46 with the upper holding unit 20 facing upward. Further, the photographer operates the operation unit 140 of the radiation generator 34 to start irradiation of the laser light from the laser light source 136. Also, the photographer stands the patient 30 as the subject 30 in front of the imaging table 45 and manually slides the slide connecting portion 12 so that the height of the center position in the vertical direction of the rail provided on the slide rail portion 14 ( (Z direction) is moved to the center (Z = 0) of the long shooting range to be shot in accordance with the height of the subject 30. Information indicating the sliding amount (movement amount) at this time is transmitted from the console 42 to the radiation generating apparatus 34. The head swing mechanism 142 performs a head swing operation according to this information, and the irradiation position of the laser light is adjusted to Z = 0 (the center height of the rail of the slide rail portion 14).

  Subsequently, the photographer operates the operation unit 140 to cause the swing mechanism unit 142 to swing. Thereby, the irradiation position of a laser beam goes up and down. The photographer designates the upper and lower ends of the long photographing range while visually confirming the laser beam. Specifically, when the irradiation position of the laser beam is moved to each of the upper end position and the lower end position of the desired long photographing range, the button 140A of the operation unit 140 is pressed and designated. Information indicating the irradiation position of the laser beam when the button 140A is pressed is transmitted to the console 42 via the communication I / F unit 132 as long imaging range information.

  The console 42 acquires the long imaging range information by receiving the long imaging range information from the radiation generator 34.

  In step 208, intervals d between a plurality of shooting positions for shooting the long shooting area are determined. Specifically, when the overlap amount (the length in the vertical direction of the overlapping area when shooting is performed so that a part of the adjacent shooting areas overlap) is determined in advance, the specified electronic cassette 32 is specified. The length obtained by subtracting the overlap amount from the vertical length of the imaging region is determined as the interval d. If the overlap amount is not 0, the interval d is shorter than the vertical length of the imaging region of the specified electronic cassette 32. Further, when the overlap amount is set to 0, the length in the vertical direction of the imaging region of the specified electronic cassette 32 is determined as the interval d between the plurality of imaging positions as it is. When the number of shooting positions is variable, the overlap amount is a, the vertical length of the specified shooting area of the electronic cassette 32 is b, and the length of the specified long shooting range is set. X can be obtained so as to satisfy the formula “{bx−a (x−1)} ≧ c”, where c is the number of shooting positions and x is the number of shooting positions.

  In addition, the overlap amount range (upper limit value and lower limit value) is determined in advance, and for example, the number of shooting positions is determined in advance as three places (the number of shots may be referred to as three). If there is an overlap amount, the three shooting positions are set so that the range in which the overlap amount is within a predetermined range and the length in the vertical direction is longer than the length of the designated long shooting range is shot. The interval d is determined.

  For example, when the overlap amount is a, the vertical length of the imaging region of the specified electronic cassette 32 is b, and the length of the designated long imaging range is c, the following formula “ (3b-2a) ≧ c ”is satisfied. Here, the range of the overlap amount is defined, and a is variable within this range. Therefore, a within the range and satisfying the above mathematical formula is obtained, and a value obtained by subtracting the determined value of a from b. Is determined as an interval d.

  Note that the method of determining the interval d is not limited to the example described here, and various methods can be employed.

  In step 210, the cassette storage unit 46 (slide support unit 16) is moved to the plurality of imaging positions so that the radiation images are captured at the plurality of imaging positions separated by the determined interval d, and the plurality of imaging is performed. Control is performed so that a radiographic image is taken at each position.

  Hereinafter, an example of the movement of the cassette storage unit 46 (slide support unit 16) will be described. Here, a case where shooting is performed at three shooting positions will be described as an example with reference to FIG.

  First, the motor driver 44 is controlled by the motor control unit 120, and the cassette storage unit 46 (slide support unit 16) is adjusted so that the vertical center position of the photographing area of the electronic cassette 32 is at a height of z = d. Move.

  In this state, the first radiation image is taken. Specifically, instruction information is transmitted from the console 42 to the electronic cassette 32 so that charge accumulation is started by the radiation detector 60 of the electronic cassette 32, and the radiation source 130 is directed toward the imaging region at this imaging position. Instruction information (including information indicating an exposure condition and an imaging position) is transmitted from the console 42 to the radiation generator 34 so that the radiation X is emitted from the console 42. In response to this, the swing mechanism 142 of the radiation generator 34 changes the irradiation position of the radiation X by the swing operation, and the radiation source controller 134 determines that the radiation X corresponding to the exposure condition instructed in advance is generated. The radiation source 130 is controlled so as to be irradiated. In order to avoid X-ray irradiation on unnecessary portions, the X-ray irradiation range is adjusted with a collimator as appropriate.

  The charges accumulated for a certain period of time by the radiation detector 60 are input to the signal processing unit 82 via each data wiring 78, converted into digital image data by the signal processing unit 82, and stored in the image memory 90. Then, the cassette control unit 92 of the electronic cassette 32 reads the image data from the image memory 90 and transmits it to the console 42. Thereby, the console 42 can receive the image data of the first radiation image.

  Next, the motor control unit 120 controls the motor driver 44 so that the vertical center position of the imaging area of the electronic cassette 32 is set to a height of z = 0 (the slide support unit 16). Move.

  In this state, a second radiation image is taken. The shooting method is the same as that for the first image.

  Similarly, the cassette storage section 46 (slide support section 16) is moved so that the vertical center position of the imaging area of the electronic cassette 32 is at a height of z = −d.

  In this state, a third radiographic image is taken. The shooting method is the same as that for the first image.

  In addition, the imaging | photography method of a some radiographic image is not limited to this. For example, the cassette storage unit 46 may be moved in order from the lower shooting position to the upper shooting position for shooting. First, the cassette storage unit 46 is moved to the middle shooting position among a plurality of shooting positions, and then moved from that position to the upper shooting position for shooting, and then moved to the lower shooting position. You may make it photograph. In any case, the cassette storage section 46 is moved so that the intervals between the plurality of shooting positions are the determined interval d.

  In step 212, image data of a plurality of radiographic images obtained by imaging are connected and combined to generate image data indicating a long radiographic image. For the overlap region, image data of any one of the radiographic images may be used, or image data obtained by combining two radiographic images may be used. Image data indicating the generated long radiation image is displayed on the display 100.

  When the electronic cassette 32 is replaced, the above processing routine is repeated from the beginning. When only the mounting direction of the electronic cassette 32 with respect to the cassette holding unit 40 is changed, the process is repeated from step 202 of the above processing routine. If the long cassette shooting range is changed and shooting is performed with the electronic cassette 32 mounted in the same orientation, the process is repeated from step 206.

  As described above in detail, according to the present embodiment, the cassette holder 46 is held in the predetermined direction (here, the subject) with the cassette holder 40 holding the electronic cassette 32 attached to the cassette holder 46. When taking a long image to obtain a long radiation image by photographing a plurality of radiation images at a plurality of different photographing positions while moving in the direction of 30 body axes (vertical direction), photographing of the mounted electronic cassette 32 The vertical length of the area is specified, and the interval between the plurality of imaging positions is determined based on the specified length, and the radiographic image is captured at each of the plurality of imaging positions separated by the determined interval. Therefore, even if the type and mounting orientation of the electronic cassette 32 to be used are changed, an appropriate movement interval is determined without taking time and a long radiation image is obtained. Shoot It is possible. Accordingly, since a single apparatus can easily shoot long images regardless of whether the electronic cassette 32 is in a portrait or landscape orientation, the photographer can select the type and attachment of the electronic cassette 32 in accordance with a desired long image area. The direction can be selected.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. Various changes or improvements can be added to the above-described embodiment without departing from the gist of the invention, and embodiments to which the changes or improvements are added are also included in the technical scope of the present invention.

  The above embodiments do not limit the invention according to the claims (claims), and all the combinations of features described in the embodiments are essential for the solution means of the invention. Is not limited. The embodiments described above include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. Even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, as long as an effect is obtained, a configuration from which these some constituent requirements are deleted can be extracted as an invention.

  For example, in the above embodiment, the example in which the mounting orientation of the electronic cassette 32 is detected by the plurality of switches 24 provided in the cassette holding unit 40 has been described. However, the present invention is not limited to this example. A plurality of optical sensors may be arranged, and the mounting direction of the electronic cassette 32 may be detected from the shielding state of the plurality of sensors.

  For example, the cassette holding part 40 can be configured as shown in FIG. In the upper holding part 20 of the cassette holding part 40, a plurality of optical sensors (four sensors of optical sensors 29A, 29B, 29C, 29D in the figure) are arranged instead of the four switches 24. A sensor support portion 27 is connected.

  FIG. 10A is a diagram showing a state in which a rectangular electronic cassette 32 (for example, an electronic cassette 32 having a half-cut imaging area) is mounted horizontally on the cassette holding unit 40 shown in FIG. 10 (B) is a diagram showing a state in which the electronic cassette 32 is mounted vertically with respect to the cassette holding unit 40 shown in FIG.

  As shown in FIG. 10A, when the electronic cassette 32 is mounted sideways with respect to the cassette holding portion 40, the three optical sensors 29A, 29B, and 29C are shielded, and the optical sensor 29D is exposed. It becomes a state. Further, as shown in FIG. 10B, when the electronic cassette 32 is mounted vertically with respect to the cassette holding portion 40, all four sensors of the optical sensors 29A, 29B, 29C, and 29D are shielded. It becomes.

  As described above, the cassette holding unit 40 illustrated in FIG. 9 is configured to be able to detect the mounting direction of the electronic cassette 32 with respect to the cassette holding unit 40 based on the shielding state of the plurality of optical sensors 29. Information indicating the shielding state of each optical sensor 29 is transmitted to the console 42 via a connection terminal 40 </ b> A (see also FIG. 6) provided in the cassette holding unit 40.

  In the HDD 110 of the console 42, the type and mounting direction of the electronic cassette 32 and the information on the shielding states of the four optical sensors 29 are stored in association with each other. The console 42 can determine the mounting orientation from the information indicating the shielding state of each optical sensor 29 transmitted from the cassette holding unit 40 and the type of the electronic cassette 32.

  In the above description, the example in which the mounting orientation of the electronic cassette 32 is detected by the switch 24 or the optical sensor 29 in the cassette holding unit 40 has been described. However, the present invention is not limited to this. You may provide in the cassette 32 side. For example, the pressure detected when the edge of the electronic cassette 32 comes into contact with any step of the lower holding portion 21 of the cassette holding portion 40 is detected on the electronic cassette 32. Any of such pressure sensors may be provided, and the console 42 may acquire the detection results of the provided sensors. The console 42 can specify the mounting direction from the detection results of these sensors.

  In the above description, the example in which the type of the electronic cassette 32 is acquired by reading the type information stored in the electronic cassette 32 has been described. However, the present invention is not limited to this, and the type of the electronic cassette 32 is displayed on the display of the console 42. A setting screen for setting information to be displayed may be displayed, and the photographer may operate the operation panel 102 to input and set information indicating the type of the electronic cassette 32 on the setting screen. The type information set here can be acquired and used as the type of the electronic cassette 32 to be attached to the cassette holding unit 40.

  In the above-described embodiment, the example in which the length of the imaging region of the electronic cassette 32 (in the body axis direction of the subject 30) is specified according to the type and mounting direction of the electronic cassette 32 has been described. It is not limited. For example, instead of the cover 18 shown in FIG. 5, a cover 18 in which a plurality of indices (markers) 18C are drawn side by side as shown in FIG. 11 is prepared. In a state where the cover 18 is hung downward from the upper end portion of the cassette storage unit 46, the movable range of the cassette storage unit 46 is covered, and in this state, a radiographic image is temporarily captured. The length of the imaging region of the electronic cassette 32 (in the body axis direction of the subject 30) may be specified based on the image indicating the index 18C included in the radiographic image captured at this time. For example, it can be specified by the number of indices 18C reflected in the radiation image.

  In the above-described embodiment, an example has been described in which a photographer can designate a long shooting range and the interval d between a plurality of shooting positions is obtained in accordance with the long shooting range. However, the present invention is not limited to this. For example, when operating so that the long imaging region is uniquely determined according to the type and mounting orientation of the electronic cassette 32 (that is, the long imaging region is fixed according to the type and mounting orientation of the electronic cassette 32). The interval d may be obtained as described above in accordance with the long imaging region. In addition, a fixed value of the interval d may be set in advance according to the type and mounting orientation of the electronic cassette 32, and the set value may be read and determined as the interval d between a plurality of shooting positions for long shooting. . For example, as shown in FIG. 12, the distance d depends on the type (type A, type B, type C...) Of the electronic cassette 32 and the mounting direction (moving in the longitudinal direction of the cassette, moving in the lateral direction of the cassette). Is stored in advance in the HDD 110 or the like of the console 42, and after identifying the type and mounting orientation of the electronic cassette 32, the corresponding interval d is read out from the table, and the read interval d is used for long shooting. Is determined as an interval d between the plurality of shooting positions. This also provides the same effect as described above.

  In the above embodiment, the radiation generating device 34 is provided with the swing mechanism 142 and the swinging operation is performed, so that the irradiation position of the radiation X of the radiation source 130 and the laser light of the laser light source 136 is changed. Although the configuration example has been described, the present invention is not limited to this. For example, instead of the head swing mechanism 142, the support movement that supports the radiation source 130 and the laser light source 136 so as to be movable in the vertical direction (vertical direction in FIG. 1). A mechanism may be provided to change the irradiation position of the radiation X of the radiation source 130 and the laser light of the laser light source 136 by moving the radiation source 130 and the laser light source 136 in the vertical direction by the support moving mechanism. Good.

  Moreover, although the said embodiment demonstrated using X-rays as a radiation, it is not specifically limited to this, A gamma ray etc. may be sufficient.

  Moreover, in the said embodiment, although the electronic cassette 32 and the imaging stand 45 were used for the long imaging | photography in a standing position, you may use the electronic cassette 32 and the imaging | photography stand 45 for the long imaging | photography in a standing position. In this case, long photographing can be performed by configuring the photographing stand 45 so that the electronic cassette 32 moves in the horizontal direction.

  In the above embodiment, a long radiation image is captured by moving the electronic cassette 32 having a radiation detector that can directly convert radiation into digital data and capturing a plurality of radiation images at a plurality of imaging positions. Although the example has been described, the present invention is not limited to the electronic cassette 32. For example, a stimulable phosphor sheet (also referred to as an imaging plate) that stores radiation energy or a cassette (CR cassette) that stores a film is moved to move a plurality of sheets. A long radiation image may be captured by capturing a plurality of radiation images at the imaging position.

  Moreover, in the said embodiment, the case where it communicates by radio | wireless between the electronic cassette 32 and the console 42, between the radiation generator 34 and the console 42, and between the cassette holding | maintenance part 40 and the console 42 is demonstrated. However, the present invention is not limited to this, and for example, at least one of these may be configured to perform communication by wire.

  In addition, the configuration of the electronic cassette 32 (see FIG. 2) and the configuration of the imaging system (see FIG. 1) described in the above embodiment are merely examples, and unnecessary portions are within the scope not departing from the gist of the present invention. Needless to say, can be deleted, a new part can be added, or the connection state can be changed.

  Further, the processing flow of various programs described in the above embodiment (see FIG. 7) is also an example, and unnecessary steps are deleted or new steps are added within the scope of the present invention. Needless to say, the processing order can be changed.

DESCRIPTION OF SYMBOLS 10 Base part 12 Slide connection part 14 Slide rail part 16 Slide support part 18 Cover 24A-24D Switch 25 Detection part 26 Communication part 27 Sensor support part 29A-29D Optical sensor 32 Electronic cassette 34 Radiation generator 40 Cassette holding part 42 Console 45 Camera stand 46 Cassette compartment

Claims (11)

A plurality of different radiation imaging apparatuses that detect radiation emitted from a radiation source and pass through the subject and acquire a radiation image of the subject are mounted on the mounting unit while the mounting unit is moved in a predetermined direction. When taking a plurality of radiation images at an imaging position to obtain a long radiation image, the length in the predetermined direction of the imaging region of the radiation imaging apparatus attached to the attachment unit is specified. Specific means,
Determining means for determining intervals between the plurality of shooting positions based on the length specified by the specifying means;
Moving means for moving the mounting portion so that a radiographic image is captured at each of a plurality of imaging positions separated by an interval determined by the determining means;
Radiographic imaging system equipped with. The radiographic imaging system according to claim 1, wherein the determining unit determines, as the interval, a length specified by the specifying unit or a length shorter than a length specified by the specifying unit. Further comprising a designating means for designating the length of the long radiation image in the predetermined direction;
The said determination means determines the said space | interval so that the said elongate radiographic image whose length of the said predetermined direction is more than the length designated by the said designation | designated means will be obtained. Radiation imaging system. It is possible to cover a movable range of the mounting portion, and further includes an index drawing cover in which a plurality of indexes are drawn side by side in the predetermined direction,
The specifying means is an image showing an index included in a radiographic image obtained when provisional imaging is performed in a state in which a movable range of the mounting unit on which the radiation imaging apparatus is mounted is covered with the index drawing cover. The radiographic image capturing system according to claim 1, wherein the length is specified based on the radiographic image capturing system. The mounting unit includes a detecting unit that detects an orientation of the mounted radiographic apparatus with respect to the mounting unit;
The specifying unit includes a type acquiring unit that acquires a type of a radiographic apparatus to be mounted on the mounting unit, and is a dimension in a longitudinal direction of an imaging region of the radiographic apparatus that is determined according to the type acquired by the type acquiring unit. The length in the predetermined direction of the imaging region of the radiation imaging apparatus is specified based on the dimension in the lateral direction and the direction detected by the detection means. The radiographic imaging system described. The radiation imaging apparatus is provided with detection means for detecting the orientation of the radiation imaging apparatus with respect to the mounting unit
The specifying unit includes a type acquiring unit that acquires a type of a radiographic apparatus to be mounted on the mounting unit, and is a dimension in a longitudinal direction of an imaging region of the radiographic apparatus that is determined according to the type acquired by the type acquiring unit. The length in the predetermined direction of the imaging region of the radiation imaging apparatus is specified based on the dimension in the lateral direction and the direction detected by the detection means. The radiographic imaging system described. A storage means for storing in advance information indicating the type of the radiation imaging apparatus is provided,
The radiographic image capturing system according to claim 5, wherein the type acquiring unit acquires the type by reading the information from the storage unit of the radiation imaging apparatus mounted on the mounting unit. A setting unit for setting a type of radiation imaging apparatus to be mounted on the mounting unit;
The radiographic image capturing system according to claim 5, wherein the type acquiring unit acquires the type set by the setting unit and uses the type set as the type of the radiographic apparatus mounted on the mounting unit. A long imaging region that can cover a movable range of the mounting unit and is determined according to the type of the radiation imaging apparatus and the mounting direction, and the plurality of imagings for imaging the long imaging region The radiographic imaging system according to any one of claims 6 to 8, further comprising an imaging area drawing cover in which each imaging area at a position is drawn. A plurality of different radiation imaging apparatuses that detect radiation emitted from a radiation source and pass through the subject and acquire a radiation image of the subject are mounted on the mounting unit while the mounting unit is moved in a predetermined direction. When taking a plurality of radiographic images at an imaging position to obtain a long radiographic image, the length in the predetermined direction of the imaging region of the radiation imaging apparatus attached to the attachment unit is specified. ,
Based on the specified length, determine an interval between the plurality of shooting positions,
A radiographic image capturing method of moving the mounting portion so that a radiographic image is captured at each of a plurality of imaging positions separated by the determined interval. Computer
A plurality of different radiation imaging apparatuses that detect radiation emitted from a radiation source and pass through the subject and acquire a radiation image of the subject are mounted on the mounting unit while the mounting unit is moved in a predetermined direction. When taking a plurality of radiation images at an imaging position to obtain a long radiation image, the length in the predetermined direction of the imaging region of the radiation imaging apparatus attached to the attachment unit is specified. Specific means,
Based on the length specified by the specifying means, a determining means for determining an interval between the plurality of imaging positions, and a radiographic image is captured at each of the plurality of imaging positions separated by the interval determined by the determining means. Moving means for moving the mounting portion so that
Program to function as.

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