JP2020041957A - Radiation inspection device - Google Patents

Abstract

To provide a radiation inspection device allowing easy setting of proper conditions for imaging to obtain a desired quality of an image.SOLUTION: A radiation inspection device as a fluoroscopic device or a CT imaging device includes: a display unit for displaying taken images 74d with different qualities; a controller 73 for receiving a selection of an image quality by an operator; and an imaging unit for, on the basis of the condition of imaging for the quality selected by using the controller, applying radiation and taking an image of the inside of an inspection target.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a radiation inspection apparatus that detects a beam transmitted through a subject and forms an image by detecting the beam.

  A radiation inspection apparatus is an apparatus that supports nondestructive inspection of a subject, irradiates the subject with radiation represented by X-rays, detects radiation transmitted through the subject, and forms an image. For example, by observing an image generated by the radiation inspection apparatus, a void existing inside the subject can be found.

  As a radiation inspection apparatus, a fluoroscopic imaging apparatus and a CT (Computed Tomography) imaging apparatus have been widely used. The fluoroscopic apparatus includes an electron tube that generates radiation and a radiation detector. The fluoroscopic apparatus irradiates a subject with radiation from one direction, detects a two-dimensional distribution of radiation intensity attenuated in a process of transmitting through the subject, and images a transmitted image.

  Further, the CT imaging apparatus includes a mechanism for rotating a subject and a reconstruction processing unit in addition to an electron tube for generating radiation and a detector for radiation. This CT imaging apparatus irradiates radiation generated by an electron tube while rotating a subject, obtains transmission images in each view direction, creates volume data of the subject from these transmission images, and further obtains an object from the volume data. Image a cross-sectional image of the specimen.

  In a radiation inspection apparatus, for example, the tube voltage of an electron tube is related to the average energy of photons, determines the radiation transmission ability, and affects the image contrast. The tube current is related to the dose and affects the shading of the image. In the CT imaging apparatus, the number of views, which is the number of transmitted images, determines the amount of information for image reconstruction and affects the contour of the image. The number of transmitted images and the exposure time affect the SN ratio of the image.

  Therefore, an operator who handles the radiation inspection apparatus must appropriately set the imaging conditions such as the tube voltage, the tube current, the number of views, the number of integrated images, and the exposure time so that an image can be obtained with a desired image quality. However, there are many setting items for shooting conditions, and setting appropriate shooting conditions takes time and effort. Therefore, in the radiation inspection apparatus, imaging conditions according to the material of the subject are preset. The operator has called up the imaging conditions according to the material of the subject, and performed the inspection under the called-up imaging conditions.

JP-A-2002-365239

  There are various subjects to be inspected by an industrial radiation inspection apparatus used for nondestructive inspection. For example, the shape, material, existence of different materials such as resin in which metal is embedded, types of manufacturing methods, and evaluation criteria of the object are various, and appropriate imaging conditions are different. For this reason, it is often impossible to deal with the preset shooting conditions.

  If the preset shooting conditions cannot be met, it is necessary to call up the near shooting conditions and arrange the called shooting conditions by the operator. However, an operator who has little knowledge of the radiation inspection apparatus requires much labor to select setting items and set parameters for improvement.

  In particular, in the case of a CT imaging apparatus, it is not possible to confirm whether an image has an appropriate image quality from irradiation of radiation to image formation through reconstruction processing. In some cases, the operator has to repeat the inspection many times while performing trial and error on the imaging conditions. Therefore, in the case of a CT imaging apparatus, a great deal of labor is required to obtain an image of appropriate quality.

  An object of the present embodiment is to provide a radiation inspection apparatus that can easily set appropriate imaging conditions to obtain an image of a desired image quality in order to solve the above-described problem.

  In order to achieve the above object, the radiation inspection apparatus according to the present embodiment includes a display unit that displays captured images of various image quality, a controller that receives selection of an image quality by an operator, and an image quality selected by using the controller. An imaging unit configured to irradiate radiation and capture an image of the inside of the subject based on corresponding imaging conditions.

  The selection of the image quality is input of various parameters related to image quality, the controller receives input of various parameters related to image quality by an operator, and the display unit displays an image quality corresponding to the various parameters input by the controller. May be displayed, and the imaging unit may irradiate radiation and capture an image of the inside of the subject based on imaging conditions corresponding to the various parameters input by the controller.

  Alternatively, the selection of the image quality is selection of a captured image, the display unit displays a plurality of the captured images of the various image qualities at a time, and the controller selects a selection from the plurality of the captured images displayed at a time. Upon receiving, the imaging unit may irradiate radiation and capture an image of the inside of the subject based on imaging conditions corresponding to the captured image selected using the controller.

  The imaging unit may capture the captured image, and the database may store the captured image captured by the imaging unit.

It is a figure showing the whole composition of a CT imaging device. FIG. 3 is a diagram illustrating a configuration of a shooting condition setting unit. It is a schematic diagram which shows the screen of a display part. It is a schematic diagram which shows a database. 5 is a flowchart illustrating an overall operation of a shooting condition setting unit. FIG. 11 is a diagram illustrating another configuration of the shooting condition setting unit. It is a schematic diagram which shows the other example of a database. It is a schematic diagram which shows another example of the screen of a display part. It is a schematic diagram which shows another aspect of a controller.

  Hereinafter, the radiation inspection apparatus according to the present embodiment will be described in detail with reference to the drawings by exemplifying a CT imaging apparatus. FIG. 1 is a diagram showing an overall configuration of a CT imaging apparatus. The CT imaging apparatus 1 irradiates a beam passing through the subject 100 around the subject 100, creates volume data from transmission images of a plurality of views, and further creates a cross-sectional image of the subject 100 from the volume data. indicate. Thereby, the CT imaging apparatus 1 supports a non-destructive inspection based on a cross-sectional image.

  Note that the transmission image is two-dimensional distribution data of the beam intensity attenuated in the transmission process of the subject 100. The volume data is a three-dimensional distribution of CT values normalized by linearly expressing the linear attenuation coefficient according to the elemental composition and the tissue density of each part of the subject 100 based on the linear attenuation coefficient of water or air. The cross-sectional image is an image of a cross-section of the subject 100, and includes an MPR (Multi-planar reconstruction) image and a CPR (Curved planar reconstruction) image.

  The CT imaging apparatus 1 mainly includes, as an imaging unit, an irradiation source 2, a detector 3, a mounting table 4, a rotary table 5, a reconstruction processing unit 6, a horizontal movement mechanism 91, a lifting mechanism 92, and a translation mechanism 93. I have. The mounting table 4 is supported by the turntable 5, and the subject 100 is mounted thereon. The irradiation source 2 and the detector 3 are arranged to face each other across the subject 100. The reconstruction processing unit 6 is connected to the detector 3 via a signal line. The horizontal movement mechanism 91 movably supports the irradiation source 2 and the detector 3 while maintaining the positional relationship between the irradiation source 2 and the detector 3, and the elevating mechanism 92 and the translation mechanism 93 enable the mounting table 4 to move. I support it.

  The irradiation source 2 irradiates a beam transmitted through the subject 100. The beam transmitted through the subject 100 is, for example, the X-ray beam 21. The irradiation source 2 emits an X-ray beam 21 expanded in a pyramid shape having a fan angle and a cone angle with the focal point F at the apex. Note that the beam transmitted through the subject 100 is not limited to X-rays. The irradiation source 2 may emit, for example, γ-rays, ultrasonic waves, microwaves, or the like.

  The irradiation source 2 is, for example, a reflection-type or transmission-type microfocus X-ray tube or a nanofocus X-ray tube having a focus F of 1 μm or less. The X-ray tube is configured by disposing a cathode on the filament side and an anode on the target side such as tungsten in opposition. A tube current and a tube voltage according to imaging conditions are applied between the electrodes. Electrons are emitted from the filament, the electrons accelerate toward the target, and the accelerated electrons collide with the target. X-rays are emitted from the focal point F due to the collision of the electrons with the target.

  The detector 3 is located at the destination of the X-ray beam 21 transmitted through the subject 100, and is arranged to face the focal point F of the irradiation source 2. The detector 3 has a two-dimensionally expanding surface for detecting the X-ray beam 21. Then, the detector 3 detects a two-dimensional distribution of the X-ray beam 21 transmitted through the subject 100 and outputs a transmitted image of the subject 100.

  The detector 3 is, for example, a flat panel detector (FPD). The FPD has detection elements for the X-ray beam 21 arranged side by side on a surface that spreads two-dimensionally. Each detection element has a scintillator surface and a photodiode. The scintillator surface is made of cesium iodide or the like which emits light when excited by radiation. The photodiode converts the fluorescent image into a charge and stores the charge, and the TFT switch outputs the charge stored in the photodiode when an ON signal is given.

  The detector 3 may be configured by an image intensifier (II) and a camera. I. I. Expands the scintillator surface in a two-dimensional manner, and converts the two-dimensional distribution of incident radiation into a fluorescent image while increasing the luminosity of the fluorescent image. The camera is provided with an image sensor such as a CCD or a CMOS, and captures a fluorescent image.

  The mounting table 4 is disposed between the irradiation source 2 and the detector 3. The mounting surface of the mounting table 4 is a flat surface parallel to the optical axis 22 of the X-ray beam 21. The turntable 5 is provided below the mounting table 4, and rotates the mounting table 4 around a rotation axis 51. The rotation axis 51 intersects the optical axis 22 perpendicularly. The turntable 5 has, for example, a motor and a shaft. The shaft extends in accordance with the rotation shaft 51 and supports the mounting table 4. The rotation table 5 rotates the mounting table 4 around the rotation shaft 51 by 360 degrees during the irradiation of the X-ray beam 21.

  When the CT imaging apparatus 1 is of a tilt type, the mounting surface of the mounting table 4 may be tilted with respect to the optical axis 22 so that a lamino angle that is not orthogonal to the optical axis 22 is generated. Further, the CT imaging apparatus 1 may execute a half scan. In this case, the rotation angle of the turntable 5 is smaller than one rotation. Further, the CT imaging apparatus 1 may execute overscan. In this case, the rotation angle of the turntable 5 is larger than one rotation.

  The reconstruction processing unit 6 is a so-called computer, and includes a processor, a RAM, and a nonvolatile memory. The memory stores a reconstruction processing program, and the reconstruction processing unit 6 is a generation unit that generates a cross-sectional image according to the program stored in the memory. The reconstruction processing unit 6 receives the transmission images of each view output by the detector 3, creates volume data from the transmission images of these views, and generates a cross-sectional image from the volume data. For this reconstruction processing, for example, a filtered back projection method of FDK (Feldkamp, Davis, Kress) or a successive approximation method of ART (Algebraic Reconstruction Technique) is used.

  The horizontal movement mechanism 91 moves the irradiation source 2 and the detector 3 in parallel along the optical axis 22. The elevating mechanism 92 moves the mounting table 4 along the rotation shaft 51. The translation mechanism 93 moves the mounting table 4 along the rotation axis 51. The horizontal moving mechanism 91, the elevating mechanism 92, and the translating mechanism 93 change the region of interest and the photographing magnification.

  As shown in FIG. 2, such a CT imaging apparatus 1 further includes an imaging condition setting unit 7 and various control devices. The control devices are, for example, a high-voltage generating unit 81, a rotation driving unit 82, and an imaging driving unit 83. The photographing condition setting unit 7 is a computer having an interface for outputting a control signal to each control device. The imaging condition setting unit 7 and the reconstruction processing unit 6 may be configured by the same computer, or may be configured by separate computers.

  First, the shooting condition setting unit 7 sets shooting conditions. Further, the photographing condition setting unit 7 generates a control signal reflecting the set photographing condition, and outputs the control signal to the high voltage generating unit 81, the rotation driving unit 82, and the imaging driving unit 83. In the case of the CT imaging apparatus 1, the imaging conditions include the tube voltage, the tube current, the number of views, the number of integrated images or the exposure time, the beam hardening correction data, the thickness and type of the filter, and other necessary information from imaging of the subject 100 to imaging Conditions.

  The high voltage generation unit 81 generates a high voltage, and supplies the tube voltage and tube current set by the imaging condition setting unit 7 to the irradiation source 2. The rotation drive unit 82 inputs a power signal to the rotation table 5 and rotates the rotation table 5 at a rotation speed according to the number of views and the number of integrated images set by the imaging condition setting unit 7 or the exposure time. The imaging driving unit 83 accumulates the electric signal of the detector 3 generated by detecting the X-ray beam 21 according to the exposure time set by the imaging condition setting unit 7. Note that the reconstruction processing unit 6 integrates the transmitted images for the integral number set by the photographing condition setting unit 7.

  The photographing condition setting unit 7 will be described in more detail. The shooting condition setting unit 7 includes a display unit 71, an input unit 72, a controller 73, a database 74, and a time calculation unit 75. The display unit 71 includes a device having a screen such as a liquid crystal display or an organic EL display and a processor. The input unit 72 is an input device such as a mouse, a keyboard, or a touch panel. The controller 73 is a GUI interface displayed on the display unit 71, and includes the display unit 71 and a processor. The database 74 includes a memory. The time calculation unit 75 mainly includes a processor.

  The display unit 71 displays a shooting condition setting screen as shown in FIG. The part data and layout method required for the layout of the setting screen are stored in the memory, and the display unit 71 reads out the part data and the like, renders the setting screen, and displays the setting screen. On this setting screen, a captured image 74d and a controller 73 are arranged. In addition, a shooting time 74e is displayed on the setting screen.

  The controller 73 accepts selection of the material of the subject 100 to be imaged and the desired image quality of the cross-sectional image. In the controller 73, a pull-down menu 73a and a slide bar 73b are laid out. The pull-down menu 73a is used for selecting the material of the subject 100 to be imaged, and lists character strings indicating various materials. Each character string can be selected by clicking. The slide bar 73b is used for selecting image quality. Image quality parameters are allocated to the slide bar 73b for each knob position dragged using the input unit 72. The parameter is an absolute value or a relative value such as, for example, a magnitude relative to a reference.

  The selectable image quality includes, for example, the sharpness of the contour of the subject 100, the S / N ratio of the cross-sectional image, the contrast of the cross-sectional image, and the beam hardening correction strength of the cross-sectional image. The slide bar 73b is arranged on the controller 73 for each of the items related to the image quality. In the present embodiment, these items relating to image quality refer to the image quality of the cross-sectional image itself, and do not include imaging conditions that affect the image quality.

  The captured image 74d is a reference image visually representing the image quality. The image quality of the captured image 74d displayed on the display unit 71 matches the image quality selected by the controller 73. The captured image 74d is stored in the database 74 in advance. The display unit 71 reads out a captured image 74d that matches the material and image quality selected by the controller 73 from the database 74 and displays it.

  FIG. 4 is a schematic diagram showing the database 74. As shown in FIG. 4, the database 74 stores a plurality of captured images 74d. A material information 74a, an image quality information set 74b, and a shooting condition set 74c are associated with each captured image 74d. In other words, the database 74 stores a set of the captured image 74d, the material information 74a, the image quality information set 74b, and the shooting condition set 74c. In other words, in the database 74, when acquiring a cross-sectional image of the image quality indicated by the image quality information set 74b like the image quality of the captured image 74d, the imaging condition set 74c is set according to the material indicated by the material information 74a. Is remembered.

  The material information 74a indicates the material of the linked image 74d, and is character string data of, for example, aluminum or resin. The image quality information set 74b indicates the image quality of the linked captured image 74d, and includes parameters of each item related to the image quality that can be adjusted by the slide bar 73b of the controller 73. For example, the image quality information set 74b includes a parameter indicating the sharpness of the contour, a parameter indicating the SN ratio, a parameter indicating the contrast, a parameter of the beam hardening correction strength, and the like. The imaging condition set 74c includes a tube voltage, a tube current, the number of views, an integrated number or an exposure time, a beam hardening correction intensity, a filter thickness, and a tube voltage for obtaining a cross-sectional image of image quality along the linked image 74d. It consists of various shooting conditions such as types.

  The captured image 74d registered in the database 74 is volume data or a cross-sectional image obtained by imaging the subject 100 in the past. For example, when the subject 100 having a material not registered in the database 74 is photographed, the material information 74a, the image quality information set 74b, and the photographing condition set 74c are added to the input unit 72 and registered in the database 74. The registration timing may be the time of trial shooting of the subject 100 to be currently photographed. Further, the captured image 74d may be an image obtained without depending on photographing of a CG model or the like.

  The photographing condition setting unit 7 stores in advance parameters relating to each image quality and relational expressions of photographing conditions, and performs image processing and relational expressions from a set of photographed image 74d, material information 74a, image quality information set 74b, and photographing condition set 74c. , Each set of the captured image 74d, the material information 74a, the image quality information set 74b, and the imaging condition set 74c may be generated.

  In such a shooting condition setting unit 7, the controller 73 receives selection of a material and an image quality. The display unit 71 reads out the captured image 74d that matches the selected material and image quality from the database 74 and displays it on the setting screen.

  At this time, the time calculation unit 75 reads out the imaging condition set 74c associated with the material information 74a and the image quality information set 74b that match the material and image quality received by the controller 73, and performs shooting based on the number of views and the number of integrated images or the exposure time. The time 74e is calculated and displayed on the display unit 71. For example, assuming that the collection pitch of one transmission image is T seconds, the number of views is Y, and the number of integral images is Z, the shooting time 74e is derived by T × Y × Z.

  When the selection of the material and the image quality is finalized, the imaging condition setting unit 7 reads out the imaging condition set 74c corresponding to the selected material and image quality from the database 74, and outputs a control signal of each imaging condition included in the imaging condition set 74c. To the high-voltage generator 81, the rotation driver 82, and the imaging driver 83. Note that an icon of the confirm button 73c is arranged in the setting screen. The confirmation button 73c is pressed using the input unit 72 when the selection is confirmed. The photographing condition setting unit 7 finalizes the selection in response to the pressing of the enter button 73c. That is, a control signal reflecting each shooting condition included in the shooting condition set 74c is output to the control device.

  FIG. 5 is a flowchart showing the overall operation of the photographing condition setting unit 7. First, the photographing condition setting unit 7 displays the controller 73 on the setting screen of the display unit 71 (Step S01). The controller 73 receives a material selection from the pull-down menu 73a (step S02). When a material is selected using the input unit 72, the display unit 71 searches for material information 74a that matches the selected material (step S03). Then, the captured image 74d linked to the corresponding material information 74a is read and displayed (Step S04).

  Note that a plurality of captured images 74d are linked to the same material information 74a, but the captured images 74d read in response to the material selection are determined in advance. For example, the captured image 74d read in response to the material selection may be a captured image 74d having an intermediate image quality.

  Next, when the knob of each slide bar 73b is dragged using the input unit 72 (Step S05, Yes), the controller 73 stores the image quality information set 74b including the combination of parameters determined according to the position of each knob in the database. A search is made from the data 74 (step S06). Then, the display unit 71 reads out the captured image 74d linked with the image quality information set 74b from the database 74 and displays it (S07).

  In the process so far, the operator adjusts the items related to the image quality such as the outline and the contrast with reference to the image quality of the captured image 74d without considering the imaging condition, while considering the material of the subject 100. So conscious. In other words, the operator only needs to be conscious of the image quality of the desired cross-sectional image, and performs an intuitive setting operation without having to be familiar with the relationship between the imaging conditions and the image quality.

  The image quality selection and the display of the captured image 74d are repeated unless the image quality selection is determined (Step S08, No). On the other hand, when the selection is confirmed by pressing the confirmation button 73c (Step S08, Yes), the photographing condition setting unit 7 sets the photographing associated with the image quality information set 74b that matches the image quality currently set in the controller 73. The condition set 74c is read (step S09). Then, the shooting condition setting unit 7 converts each shooting condition included in the read shooting condition set 74c into a control signal, outputs the control signal to the control device, and starts shooting (step S10).

  As a result, the photographing conditions appropriate for obtaining the cross-sectional image of the image quality selected by the operator are set without being conscious of the operator.

  Then, the CT imaging apparatus 1 images the subject 100 in accordance with the imaging conditions and generates a cross-sectional image. That is, the irradiation source 2 irradiates the X-ray beam 21 with the tube voltage and the tube current set by selecting the image quality. The rotation table 5 rotates the mounting table 4 at a rotation speed that can achieve the number of views, the number of integrated images, or the exposure time set by selecting the image quality. The detector 3 outputs a transmitted image with the integral number or the exposure time set by selecting the image quality. The reconstruction processing unit 6 generates a cross-sectional image based on the beam hardening correction strength set by the selection of the image quality and the thickness and type of the filter.

  As described above, the CT imaging apparatus 1 includes the display unit 71 that displays the captured images 74d of various image qualities and the controller 73 that receives the selection of the image qualities by the operator. Then, the imaging unit is configured to irradiate radiation and capture an image in the subject 100 based on imaging conditions corresponding to the image quality selected using the controller 73.

  Thus, the operator does not need to be aware of the imaging conditions such as the tube current and the tube voltage, but need only be aware of the desired image quality. Therefore, even an operator who has little knowledge of the CT imaging apparatus 1 can easily obtain a cross-sectional image of a desired image quality. Further, since the captured image 74d is displayed in accordance with the selected image quality, the CT imaging apparatus 1 does not need to repeat the inspection many times, and the labor is reduced.

  Here, the captured image 74d of various image qualities may be displayed on the display unit 71. Therefore, not all the captured images 74d need to be stored in the database 74. For example, as shown in FIG. 6, the imaging condition setting unit 7 includes an image quality adjustment unit 76 in addition to the display unit 71, the input unit 72, the controller 73, the database 74, and the time calculation unit 75. As shown in FIG. 7, the database 74 stores one captured image 74d for the material information 74a. That is, the captured image 74d is stored in association with the material information 74a and the imaging condition set 74c.

  The image quality adjusting unit 76 mainly includes a processor. The image quality adjustment unit 76 performs image processing on the captured image 74 d stored in the database 74 and adjusts the image quality of the captured image 74 to the image quality selected by the controller 73. For example, when the slide bar 73b for selecting the sharpness of the outline is operated, the image quality adjustment unit 76 changes the sharpness of the outline of the captured image 74d according to the parameter determined by the position of the knob. The display unit 71 displays the captured image 74d whose image quality has been changed by the image quality adjustment unit 76.

  Further, the photographing condition setting unit 7 stores in advance a relational expression between the parameter of each item related to image quality and the photographing condition. Then, the photographing condition setting unit 7 changes the photographing condition set 74c stored in the database 74 in accordance with the parameter determined by the position of the knob, and outputs it to the control device in response to confirmation of the selection. For example, the imaging condition setting unit 7 changes the tube voltage according to a parameter indicating the sharpness of the contour.

  Further, the captured image 74d of various image qualities may be displayed, and the display unit 71 reads a plurality of captured images 74d that match the material selected from the pull-down menu 73a from the database 74 at a time as shown in FIG. They may be displayed at once. The database 74 stores the material information 73a and the captured image 74d of each image quality in association with each other. The selection is confirmed by selecting one of the displayed captured image groups.

  When the photographed image 74d is clicked using the input unit 72, the photographing condition setting unit 7 reads out the photographing condition set 74c associated with the clicked photographed image 74d from the database 74, generates a control signal, and performs control. Output to device. In this case, the controller 73 only selects the material, the slide bar 74b does not appear, and the input unit 72 that clicks the captured image 74d is the main configuration of the controller 73 that accepts the selection of image quality.

  FIG. 9 is a schematic diagram showing another embodiment of the controller 73. As shown in FIG. 9, the controller 73 may be a radar chart. Items related to various image quality are arranged at each corner of the radar chart. When the controller 73 is dragged in the corner direction from the center of the radar chart, the image quality parameters corresponding to the corners arranged in the drag direction are changed.

  According to these various aspects, the operator can select a desired image quality without being conscious of imaging conditions such as tube current and tube voltage, and can set appropriate imaging conditions by selecting the image quality. It is possible to easily capture a desired cross-sectional image even if the operator has little knowledge of the above. Further, since the captured image 74d is displayed in accordance with the selected image quality, it is not necessary to repeat the inspection with the CT imaging apparatus 1 many times, and the labor is reduced.

  In the present embodiment, the item related to the image quality is the image quality of the cross-sectional image itself. However, the item related to the image quality selected by the controller 73 may be the imaging condition. When the imaging condition is changed by the controller 73, the display unit 71 reads out and displays an image 74d that matches the imaging condition set 74c that matches the combination of the changed imaging conditions. In this case, since the operator adjusts the image quality of the captured image 74d by changing the shooting conditions, it is necessary to be aware of the shooting conditions. However, the operator can know the result of the change in the shooting conditions in real time from the captured image 74d. In addition, even an operator who has little knowledge of the CT imaging apparatus 1 can easily reach appropriate imaging conditions.

  Although the embodiments of the present invention have been described in the present specification, the embodiments are presented as examples and are not intended to limit the scope of the invention. The embodiment as described above can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. The embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  For example, in the present embodiment, the CT imaging apparatus 1 has been described as an example of the radiation inspection apparatus. However, the present invention is also applicable to a fluoroscopic imaging apparatus that images a transmission image. That is, the fluoroscopy apparatus may be provided with the imaging condition setting unit 7, and the radiographic examination apparatus includes a fluoroscopy apparatus in addition to the CT imaging apparatus 1.

Reference Signs List 1 CT imaging apparatus 2 Irradiation source 21 X-ray beam 22 Optical axis 3 Detector 4 Mounting table 5 Rotary table 51 Rotary axis 6 Reconstruction processing unit 7 Imaging condition setting unit 71 Display unit 72 Input unit 73 Controller 73a Pull-down menu 73b Slide bar 73c Confirm button 74 Database 74a Material information 74b Image quality information set 74c Imaging condition set 74d Imaging image 74e Imaging time 75 Time calculation unit 76 Image quality adjustment unit 81 High voltage generation unit 82 Rotation driving unit 83 Imaging driving unit 91 Horizontal movement mechanism 92 Elevating mechanism 93 translation mechanism 100 subject

Claims (14)

A display unit for displaying various quality image pickup images,
A controller for receiving an image quality selection by an operator,
Based on imaging conditions corresponding to the image quality selected using the controller, an imaging unit that captures an image of the inside of the subject by irradiating radiation,
Having,
A radiation inspection apparatus characterized by the above-mentioned. The selection of the image quality is input of various parameters related to the image quality,
The controller receives input of various parameters related to image quality by an operator,
The display unit displays a captured image of image quality corresponding to the various parameters input by the controller,
The imaging unit, based on imaging conditions corresponding to the various parameters input by the controller, to irradiate radiation to capture an image of the inside of the subject,
The radiation inspection apparatus according to claim 1, wherein: The selection of the image quality is a selection of a captured image,
The display unit displays a plurality of the captured images of the various image quality at a time,
The controller receives a selection from the plurality of captured images displayed at one time,
The imaging unit, based on imaging conditions corresponding to the captured image selected using the controller, to irradiate radiation to capture an image of the subject,
The radiation inspection apparatus according to claim 1, wherein: A database that stores imaging images of the various image qualities according to various parameters related to the material of the subject and the image quality,
The controller further receives a selection of the material of the subject,
The display unit acquires and displays the captured image from the database that matches the input of each parameter related to the selection of the material and the image quality using the controller,
The radiation inspection apparatus according to claim 2, wherein: A database for storing the captured image;
In response to input of various parameters related to image quality using the controller, an image quality adjustment unit that adjusts the image quality of the captured image of the database,
With
The display unit displays the captured image adjusted by the image quality adjustment unit,
The radiation inspection apparatus according to claim 2, wherein: The imaging unit captures the captured image,
The database stores the captured image captured by the imaging unit,
The radiation inspection apparatus according to claim 4 or 5, wherein: The controller receives an input of at least one item of the degree of contour enhancement, the degree of SN ratio, the degree of contrast, the degree of beam hardening correction intensity, or the filter intensity as various parameters related to the image quality.
The radiation inspection apparatus according to claim 2, wherein: The controller receives input of various parameters of the shooting conditions as various parameters related to the image quality,
The radiation inspection apparatus according to claim 2, wherein: The display unit further displays a shooting time by the imaging unit according to the selection of the image quality,
The radiation inspection apparatus according to any one of claims 1 to 8, wherein The controller is a GUI interface displayed along with the captured image by the display unit,
The radiation inspection apparatus according to claim 1, wherein: The controller is a GUI interface displayed along with the captured image by the display unit, including a slide bar of various parameters related to the image quality,
The radiation inspection apparatus according to claim 2, wherein: The controller is a GUI interface displayed along with the captured image by the display unit, including a radar chart in which various parameters related to the image quality are arranged at each corner,
The radiation inspection apparatus according to claim 2, wherein: The imaging unit,
A mounting table for mounting the subject,
An irradiation source for irradiating the subject with radiation,
A detection unit that detects radiation transmitted through the subject,
A generation unit that generates an image of the subject based on the detection result of the detection unit,
Having,
The radiation inspection apparatus according to claim 1, wherein: The imaging unit includes a rotation table that relatively rotates the set of the radiation source and the detection unit and the mounting table,
The generation unit is a reconstruction processing unit that reconstructs volume data from detection results in each direction obtained by rotating the turntable,
The radiation inspection apparatus according to claim 13, wherein: