JP2018118045A - X-ray ct apparatus and imaging management apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly create a new protocol based on an original protocol.SOLUTION: An X-ray CT apparatus 10 performs imaging according to an imaging protocol having one or more imaging elements corresponding to an imaging type. The X-ray CT apparatus 10 comprises: an X-ray source; an X-ray detector; and protocol generation means 92. The X-ray source emits an X-ray. The X-ray detector detects an X-ray. The protocol generation means 92 generates a third imaging protocol including a third imaging element by consolidating a first imaging element included in the first imaging protocol and a second imaging element included in the second imaging protocol which correspond to the same imaging type into a single third imaging element, with respect to the first imaging protocol and the second imaging protocol.SELECTED DRAWING: Figure 2

Description

  Embodiments described herein relate generally to an X-ray CT (Computed tomography) apparatus and an imaging management apparatus.

  An X-ray CT apparatus provides information about a subject based on the intensity of X-rays that have passed through the subject, and includes many medical practices such as diagnosis and treatment of diseases and surgical plans. Plays an important role.

  In the X-ray CT apparatus, various original imaging protocols (hereinafter simply referred to as “original protocols”) are registered in advance. Each original protocol includes information on a plurality of original shooting elements (hereinafter referred to as “original elements”) corresponding to one or a plurality of shooting types and the execution order of the plurality of original elements. In the X-ray CT apparatus, when the first original protocol is set to be used, an imaging condition is set for each original element in the first original protocol. Then, the first original protocol is executed according to the execution order of the plurality of original elements. Next, in the X-ray CT apparatus, when the second original protocol is set to be used, an imaging condition is set for each original element in the second original protocol. Then, the second original protocol is executed according to the execution order of the plurality of original elements.

  In addition, when the first and second original protocols are set to be used, it is conceivable to register the first and second original protocols as one original protocol in advance.

  However, even in such a case, when a plurality of original protocols are sequentially executed as scheduled to be used, and there are original elements having the same shooting type among a plurality of original protocols, there is an overlap of shooting ranges in the original elements. As a result, overlapping X-ray exposure occurs with respect to the overlapping portion.

JP 2012-130376 A

  The problem to be solved by the present invention is to generate an appropriate new photographing protocol (hereinafter referred to as “new protocol”) from the original protocol.

  The X-ray CT apparatus according to the embodiment performs imaging according to an imaging protocol having one or a plurality of imaging elements corresponding to imaging types. The X-ray CT apparatus has an X-ray source, an X-ray detector, and protocol generation means. The X-ray source emits X-rays. The X-ray detector detects X-rays. The protocol generation unit is configured to correspond to the same shooting type for the first shooting protocol and the second shooting protocol, and the first shooting element included in the first shooting protocol and the second shooting protocol included in the second shooting protocol. By combining the elements into a single third imaging element, a third imaging protocol including the third imaging element is generated.

FIG. 1 is a schematic diagram illustrating a configuration example of an X-ray CT apparatus according to an embodiment. FIG. 2 is a block diagram illustrating an example of functions of the X-ray CT apparatus according to the embodiment. FIG. 3 is a diagram illustrating an operation example of the X-ray CT apparatus according to the embodiment as a flowchart. FIG. 4 is a diagram illustrating an example of a setting screen for an original protocol scheduled to be used in the X-ray CT apparatus according to the embodiment. FIG. 5 is a diagram illustrating an example of a selection screen for determining whether or not to generate a new protocol in the X-ray CT apparatus according to the embodiment. FIG. 6 is a flowchart illustrating an operation example of step ST5 in FIG. 3 in the X-ray CT apparatus according to the embodiment. FIG. 7 is a diagram illustrating a relationship among a plurality of imaging ranges in the X-ray CT apparatus according to the embodiment. FIG. 8 is a diagram showing an example of a new protocol display screen in the X-ray CT apparatus according to the embodiment. FIG. 9 is a diagram illustrating an example of a confirmation screen when a new protocol cannot be generated in the X-ray CT apparatus according to the embodiment. FIG. 10 is a flowchart illustrating an operation example of step ST5 in FIG. 3 in the X-ray CT apparatus according to the embodiment. FIG. 11 is a diagram showing an example of a new protocol display screen in the X-ray CT apparatus according to the embodiment. FIG. 12 is a diagram showing an example of a new protocol display screen in the X-ray CT apparatus according to the embodiment. FIG. 13 is a diagram illustrating an example of a time interval editing screen in the X-ray CT apparatus according to the embodiment. FIG. 14 is a diagram illustrating an example of a time interval editing screen in the X-ray CT apparatus according to the embodiment. FIG. 15 is a block diagram illustrating an example of the configuration and functions of the imaging management apparatus according to the embodiment.

  Hereinafter, embodiments of an X-ray CT apparatus and an imaging management apparatus will be described in detail with reference to the drawings.

(X-ray CT system)
Data collection methods using an X-ray CT apparatus include a rotation / rotation (RR: Rotate / Rotate) method in which an X-ray tube and an X-ray detector are rotated as one body, and a large number of rings. There are various methods such as a fixed / rotation (SR) method in which the detection elements are arrayed and only the X-ray tube rotates around the subject. The present invention can be applied to any method. Hereinafter, in the X-ray CT apparatus according to the embodiment, a case where the third generation rotation / rotation method, which currently occupies the mainstream, is described as an example.

  FIG. 1 is a schematic diagram illustrating a configuration example of an X-ray CT apparatus according to an embodiment.

  FIG. 1 shows an X-ray CT apparatus 10 according to the embodiment. The X-ray CT apparatus 10 is mainly composed of a scanner device 11 and a console device 12. The console device 12 is also referred to as an image processing device. The scanner device 11 of the X-ray CT apparatus 10 is usually installed in an examination room and is configured to generate X-ray transmission data regarding a subject (for example, a patient) O. On the other hand, the console device 12 is usually installed in a control room adjacent to the examination room, generates projection data based on transmission data, and generates and displays images such as scanograms and tomographic images (reconstructed images). Configured as follows.

  The scanner device 11 of the X-ray CT apparatus 10 includes a gantry device 21, a bed device 22, an imaging controller 23, and an operation panel 24.

  The gantry device 21 of the scanner device 11 includes a fixed gantry 31 fixed to a base portion (not shown) and a rotary gantry 32.

  The fixed mount 31 includes a rotation controller 41. The rotation controller 41 is a mechanism for rotating the rotating gantry 32 relative to the fixed gantry 31 so that the rotating gantry 32 rotates around the opening including the rotation center with the positional relationship of the rotating gantry 32 maintained by the imaging controller 23. Have

  The fixed gantry 31 and the rotary gantry 32 include a slip ring 51 and a data transmission device 52.

  The slip ring 51 is energized while being pressed against a ring-shaped electric circuit (metal ring) arranged concentrically on the rotating frame 32 by pressing a carbon brush or a wire brush on the fixed frame 31 side from the side. It is a connector for rotary connection.

  The data transmission device 52 includes a transmission circuit on the rotating gantry 32 side and a receiving circuit on the fixed gantry 31 side. The transmission circuit transmits the raw data generated by the data collection circuit 66 described later to the reception circuit without contact. The reception circuit supplies the raw data transmitted from the transmission circuit to the imaging controller 23 described later.

  The rotary base 32 includes a high voltage generator 61, an X-ray source (for example, an X-ray tube) 62, an optical system controller 63, an X-ray optical system 64, an X-ray detector 65, and a data acquisition circuit 66. The rotating mount 32 is also called a rotating frame. The rotary mount 32 holds the members 61 to 66 as a unit. That is, the rotating gantry 32 can rotate around the patient O as a unit with the X-ray tube 62 and the X-ray detector 65 facing each other. In addition, the direction parallel to the rotation center axis of the rotating gantry 32, that is, the longitudinal direction of the top plate 71 is defined in the z direction, and the plane orthogonal to the z direction is defined in the x direction and the y direction.

  The high voltage generator 61 supplies power necessary for performing various types of imaging to the X-ray tube 62 by a control signal from the imaging controller 23 via the slip ring 51.

  The X-ray tube 62 generates X-rays by causing an electron beam to collide with a metal target according to the tube voltage supplied from the high voltage generator 61, and irradiates the X-rays toward the X-ray detector 65. To do. Fan beam X-rays and cone beam X-rays are formed by the X-rays emitted from the X-ray tube 62. The X-ray tube 62 is supplied with power necessary for X-ray irradiation under the control of the imaging controller 23.

  The optical system controller 63 adjusts the X-ray irradiation range in the X-ray optical system 64 under the control of the imaging controller 23.

  The X-ray optical system 64 includes various instruments that control the dose, irradiation range, shape, and quality of the X-ray beam. Specifically, the X-ray optical system 64 includes a wedge filter, a collimator, and the like. The wedge filter adjusts the X-ray dose of X-rays generated by the X-ray tube 62. The collimator is a slit for narrowing the X-ray irradiation range with respect to the X-ray whose dose has been adjusted under the control of the optical system controller 63.

  The X-ray detector 65 is a one-dimensional array type detector having a plurality of detection elements in the channel direction and a single detection element in the column (slice) direction. Alternatively, the X-ray detector 65 is a two-dimensional array type detector having a matrix, that is, a plurality of detection elements in the channel direction and a plurality of detection elements in the slice direction. The X-ray detector 65 detects X-rays emitted from the X-ray tube 62.

  The two-dimensional array type detector is also called a multi-slice type detector. When the X-ray detector 65 is a multi-slice detector, imaging of a three-dimensional region having a width in the column direction by one rotation (or half rotation + α) of the rotating frame 32, that is, volume imaging can be executed. .

  The data acquisition circuit 66 has a plurality of DASs (Data Acquisition Systems). Each DAS performs data collection. Each DAS amplifies the transmission data signal detected by each detection element of the X-ray detector 65 and converts it into raw data (Raw Data) which is a digital signal. Each DAS transmits raw data to the imaging controller 23 via the data transmission device 52.

  The bed apparatus 22 of the scanner device 11 includes a top board 71 and a top board controller 72. The top plate 71 can place the patient O thereon.

  The top panel controller 72 has a mechanism for moving the top panel 71 up and down along the y direction and moving in and out along the z direction under the control of the imaging controller 23. The top board controller 72 inserts the patient O placed on the top board 71 toward the opening including the rotation center of the rotary gantry 32, and retracts the patient O placed on the top board 71 from the opening.

  The photographing controller 23 includes a CPU (Central Processing Unit) and a memory (not shown). In accordance with an instruction from the operation panel 24, the imaging controller 23 controls the top controller 72 to prepare for imaging. In addition, the imaging controller 23 controls the rotation controller 41, the high voltage generator 61, the optical system controller 63, and the like according to an instruction from the console device 12, and executes imaging according to the original protocol or the new protocol. .

  Here, the original protocol is registered in advance, and includes a plurality of original elements corresponding to one imaging type or a plurality of imaging types in one examination, and an execution order of the plurality of original elements. That is, in different original protocols, the shooting types included and the execution order of a plurality of original elements are different. Examples of the original protocol include a head slice protocol, a head helical protocol, an electrocardiographic synchronization protocol, a chest helical protocol, a lower limb helical protocol, a lower limb imaging protocol, an abdominal helical protocol, and an abdominal imaging protocol. These various original protocols are represented as symbols P1 to P3 in FIG. 4 described later.

  Examples of the shooting type include scano shooting, non-helical shooting, and helical shooting. Non-helical shooting is also called conventional shooting. Non-helical imaging and helical imaging are also called tomographic imaging that requires image reconstruction, and the imaging may include not only data collection by X-ray irradiation but also processing to reconstruct collected data. . Note that the shooting types are represented as symbols S1 to S4 in FIG. 4 described later.

  Scano imaging is imaging performed prior to other imaging for positioning. Scanography is performed by irradiating X-rays at one rotational position while the rotation of the rotating gantry 32 is stopped while the gantry device 21 is moving in the z direction while the position of the couchtop 71 is fixed. Done. Alternatively, in scanography, X-rays are radiated at one rotational position while the rotation of the rotary base 32 is stopped while the top plate 71 is moving in the z direction while the position of the base device 21 is fixed. Is done.

  Non-helical imaging as tomographic imaging is performed by irradiating X-rays at a number of rotational positions while rotating the rotary base 32 while fixing the positions of the top plate 71 and the base device 21 in the z direction. Non-helical imaging includes slice imaging in which an image for one tomogram is collected by one rotation (or half rotation + α) of the rotating frame 32, volume imaging for acquiring images for a plurality of tomograms in one rotation (or half rotation + α), and the like. including.

  In helical imaging as tomographic imaging, X-rays are irradiated at a number of rotational positions while rotating the rotating base 32 while the base device 21 is moving in the z direction with the position of the top plate 71 fixed. Is done. Alternatively, in the helical imaging, while the position of the gantry device 21 is fixed in the z direction, X-rays are irradiated at a number of rotational positions while rotating the rotating gantry 32 while the top plate 71 is moving in the z direction. Done in

  The operation panel 24 is provided on both sides of the opening portion of the gantry device 21, the front and back, and the like, and accepts an operation performed by the operator while confirming the state of the patient O. Specifically, the operator accepts instructions for turning off and turning on a projector (not shown) that emits light for visually recognizing the detection range, instructions for moving, stopping, and automatically feeding the top plate 71.

  On the other hand, the console device 12 is configured based on a computer and can communicate with an external device via a network such as a LAN (Local Area Network). The console device 12 includes basic hardware such as a processing circuit 81, a storage circuit 82, an input circuit 83, and a display 84. The processing circuit 81 is interconnected to each hardware component constituting the console device 12 via a bus as a common signal transmission path. Note that the console device 12 may include a storage medium drive.

  The processing circuit 81 means a processing circuit such as a dedicated or general-purpose CPU (Central Processing Unit) or MPU (Micro Processor Unit), an application specific integrated circuit (ASIC), and a programmable logic device. To do. Examples of the programmable logic device include a simple programmable logic device (SPLD), a complex programmable logic device (CPLD), and a field programmable gate array (FPGA). Circuit. The processing circuit 81 realizes a function to be described later by reading and executing a program stored in the storage circuit 82 or directly incorporated in the processing circuit 81.

  Further, the processing circuit 81 may be configured by a single circuit, or may be configured by combining a plurality of independent circuit elements. In the latter case, the storage circuit 82 for storing the program may be provided for each circuit element, or the single storage circuit 82 may store a program corresponding to the functions of a plurality of circuit elements. Good.

  The storage circuit 82 includes a semiconductor memory device such as a RAM (Random Access Memory) and a flash memory, a hard disk, and an optical disk. The storage circuit 82 may be configured by a portable medium such as a USB (Universal Serial Bus) memory and a DVD (Digital Video Disk). The storage circuit 82 stores various processing programs used in the processing circuit 81 (including application programs, OS (Operating System), etc.), data necessary for executing the programs, and image data. In addition, the OS may include a GUI (Graphical User Interface) that uses a lot of graphics for displaying information on the display 84 for the operator and can perform basic operations by the input circuit 83.

  The input circuit 83 is a circuit that inputs a signal from an input device such as a pointing device that can be operated by an operator. Here, the input device itself is also included in the input circuit 83. When the input device is operated by the operator, the input circuit 83 generates an input signal corresponding to the operation and outputs it to the processing circuit 81. Note that the console device 12 may include a touch panel in which an input device is configured integrally with the display 84.

  The display 84 is a display device such as a liquid crystal display panel, a plasma display panel, and an organic EL (Electro Luminescence) panel. The display 84 displays image data according to the control of the processing circuit 81.

  Note that the console device 12 may include a communication control circuit that is an IF (Interface) configured by a connector adapted to a parallel connection specification or a serial connection specification. When the X-ray CT apparatus 10 is provided on a network, the communication control circuit transmits / receives information to / from an external apparatus on the network. For example, the communication control circuit performs communication operation with an external device by transmitting image data generated by the X-ray CT apparatus 10 to an external device such as an image management device or an interpretation terminal (not shown).

  FIG. 2 is a block diagram illustrating an example of functions of the X-ray CT apparatus 10.

  As the processing circuit 81 of the console device 12 executes the program, the X-ray CT apparatus 10 has a setting function (setting means) 91, a protocol generation function (protocol generation means) 92, and a presentation function (shown in FIG. 2). Presenting means) 93 and an image generating function (image generating means) 94 are realized. Note that all or part of the functions 91 to 94 may be realized by a circuit such as an ASIC provided in the console device 12. All or part of the functions 91 to 94 may be provided not only in the console device 12 but also in the photographing controller 23.

  The setting function 91 is a function for setting an original protocol to be used from a plurality of original protocols registered in advance in the scan plan. Here, the original protocol includes information on a plurality of original elements corresponding to one imaging type or a plurality of imaging types in one examination, and the execution order of the plurality of original elements.

  When a plurality of original protocols are set by the setting function 91 in the scan plan, the protocol generation function 92 collects the original elements corresponding to the same shooting type included in the set plurality of original protocols into a single shooting. An element (hereinafter referred to as “integrated element”) includes a function for generating a new protocol including the integrated element. Further, the protocol generation function 92 includes a function for generating a new protocol so as to include original elements that do not correspond to the same photographing type included in a plurality of set original protocols in addition to the integrated elements in the scan plan. You can also. In that case, the protocol generation function 92 may include a function of generating a new protocol by organizing the execution order of integrated elements and the like.

  In addition, when one original protocol is set by the setting function 91 in the scan plan, the protocol generation function 92 creates a new one by organizing a plurality of original elements included in the one original protocol in the execution order. Includes the ability to generate protocols.

  The presentation function 93 includes a function of presenting a new protocol generated by the protocol generation function 92 to the operator in the scan plan. For example, the presentation function 93 displays the new protocol on the display 84.

  The image generation function 94 is a function for setting shooting conditions for each shooting element included in the new protocol in the scan plan. Imaging conditions include X-ray irradiation conditions, field of view (FOV), slice thickness, and the like. Here, the photographing conditions may include a moving speed related to the movement of the top board 71 (or the gantry device 21) in the z direction.

  The X-ray irradiation conditions include parameters related to the irradiated X-rays. This parameter includes, for example, the tube current mA, the tube voltage kV, the X-ray intensity control condition (modulation condition), the rotation speed of the rotating mount 32, the interval of helical imaging, the rotating speed of the rotating mount 32, and the irradiation X-ray. This includes the focal point size of the X-ray tube 62 and the like. The parameters relating to the visual field include control parameters relating to the operation of the collimator of the X-ray optical system 64.

  In addition, the image generation function 94 controls the X-ray tube 62 and the X-ray detector 65 via the imaging controller 23 to display a plurality of imaging elements included in the new protocol generated by the protocol generation function 92. This is a function for generating images such as scano images and tomographic images by executing them in the execution order.

  Image reconstruction methods for generating tomographic images include analytical methods such as convolution correction back projection (CBP) and filtered back projection (FBP), and algebra. Methods are known and used. Since the algebraic method generally obtains a tomographic image using an iterative method, it is called an iterative approximate reconstruction (IR) method.

  The image generation function 94 is a function for displaying the generated image on the display 84.

  The specific operation of the functions 91 to 94 will be described later.

  FIG. 3 is a diagram illustrating an operation example of the X-ray CT apparatus 10 as a flowchart.

  As shown in FIG. 3, the setting function 91 sets an original protocol to be used from a plurality of pre-registered original protocols in the scan plan (step ST1).

  FIG. 4 is a diagram illustrating an example of a setting screen for an original protocol scheduled to be used.

  The upper part of FIG. 4 shows three original protocols registered in advance. As an example of three original protocols registered in advance, three original protocols P1 to P3 are shown. The original protocol P1 includes five original elements corresponding to the four shooting types and the execution order of the five original elements. That is, the original protocol P1 includes five original elements P11 to P15 corresponding to the four shooting types S1 to S4 and their execution order P11 → P12 → P13 → P14 → P15.

  The original protocol P2 includes three original elements corresponding to two shooting types and the execution order of the three original elements. That is, the original protocol P2 includes three original elements P21 to P23 corresponding to the two shooting types S1 and S2 and their execution order P21 → P22 → P23.

  The original protocol P3 includes three original elements corresponding to the three shooting types and the execution order of the three original elements. That is, the original protocol P3 includes three original elements P31 to P33 corresponding to the three shooting types S1, S3, and S4 and their execution order P31 → P32 → P33.

  The operator operates the input circuit 83 to select two original protocols P1 and P2 from the three original protocols P1 to P3 on the upper stage of the setting screen. The lower part of FIG. 4 shows two selected original protocols P1 and P2. When the operator operates the input circuit 83 and presses the “SET” button on the setting screen, the setting function 91 sets the selected two original protocols P1 and P2 as original protocols to be used.

  Here, when the operator selects the “head helical protocol” as the original protocol to be used, the operator operates the input circuit 83 to select the first part “head” and secondly The “helical imaging” may be selected from the imaging type “tomographic imaging” corresponding to the part. Alternatively, when the operator selects “head helical protocol” as the original protocol to be used, the operator operates the input circuit 83 to directly select “head helical protocol” as the original protocol from a plurality of original protocols. You just have to choose.

  Returning to the description of FIG. 3, the protocol generation function 92 determines whether or not there are a plurality of original protocols scheduled to be used set in step ST1 in the scan plan (step ST2). When the determination in step ST2 is YES, that is, when it is determined that there are a plurality of original protocols to be used, the protocol generation function 92 adds the plurality of original protocols to be used set in step ST1 in the scan plan. It is determined whether or not the same shooting type exists (step ST3).

  For example, in step ST3, the protocol generation function 92 determines whether or not scano shooting exists as the same shooting type in the two original protocols scheduled to be used.

  If YES in step ST3, that is, if it is determined that the same shooting type exists in a plurality of original protocols scheduled to be used, the protocol generation function 92 generates a new protocol in the scan plan, that is, optimizes the original protocol. It is determined whether or not to perform the conversion (step ST4).

  FIG. 5 is a diagram illustrating an example of a selection screen for determining whether or not to generate a new protocol.

  As the selection screen shown in FIG. 5, for example, a message box arranged in front of the setting screen shown in FIG. 4 can be used.

  When the “set” button is pressed on the setting screen shown in FIG. 4 and the two original protocols scheduled to be used each include scanography, a message box shown in FIG. 5 is displayed. When the operator operates the input circuit 83 and presses the “Yes” button in the message box, the protocol generation function 92 determines to generate a new protocol. In that case, five imaging elements PC1 to PC5 corresponding to the four imaging types S1, S2, S3, and S4 included in the new protocol PC shown in FIG. 8 can be executed in that order.

  On the other hand, when the operator operates the input circuit 83 and presses the “No” button in the message box, the protocol generation function 92 determines that a new protocol is not generated. In this case, as shown in the lower part of FIG. 4, shooting conditions are set for each original element included in the original protocol P1, and five shooting elements corresponding to the five original elements P11 to P15 according to the original protocol P1 are set. Are executed in that order, shooting conditions are set for each original element included in the original protocol P2, and three shootings corresponding to the three original elements P21 to P23 related to the original protocol P2 are executed in that order. The

  Returning to the description of FIG. 3, when the determination in step ST4 is YES, that is, when it is determined that a new protocol is to be generated, the protocol generation function 92 determines that the same shooting type is determined to exist in step ST3. The corresponding original elements are combined into a single integrated element (step ST5), and the execution order is organized (step ST6). A new protocol is generated in steps ST5 and ST6. In addition, the organization by step ST6 is not essential.

  FIG. 6 is a flowchart showing an example of the operation in step ST5 in FIG.

  In FIG. 6, the two original protocols scheduled to be used include scano shooting as the same shooting type, and it is determined in step ST4 that a new protocol is generated by combining the original protocols related to scano shooting. explain.

  The protocol generation function 92 determines whether or not there are overlapping shooting ranges in scano shooting as the same shooting type (step ST51). If YES in step ST51, that is, if it is determined that there is an overlap of imaging ranges in scanography, the protocol generation function 92 includes a range including a plurality of imaging ranges as a first including only an X-ray irradiation range. The integrated shooting range is set (step ST52). The protocol generation function 92 sets shooting conditions in the first integrated shooting range set in step ST52 (step ST53), and proceeds to step ST6 shown in FIG.

  FIG. 7A is a diagram illustrating overlapping shooting ranges.

  As shown in FIG. 7A, between the shooting range AS1 of the original element P11 corresponding to the scano shooting S1 in the original protocol P1 and the shooting range BS1 of the original element P21 corresponding to the scano shooting S1 in the original protocol P2. , Duplication has occurred. When there is an overlap between the imaging range AS1 and the imaging range BS1, the range including the imaging ranges AS1 and BS1 is set as the first integrated imaging range FS1 including only the X-ray irradiation range.

  Returning to the description of FIG. 6, if the determination in step ST <b> 51 is NO, that is, if it is determined that there is no duplication of shooting ranges in scano shooting, the protocol generation function 92 determines whether the intervals of the plurality of shooting ranges are smaller than the threshold value. It is determined whether or not (step ST54). If YES in step ST54, that is, if it is determined that the intervals between the plurality of imaging ranges that do not overlap are smaller than the threshold value, the protocol generation function 92 determines the range including the plurality of imaging ranges and the range between them as X The first integrated imaging range including only the line irradiation range is set (step ST52), and the imaging conditions in the first integrated imaging range are set (step ST53).

  FIG. 7B is a diagram illustrating a case where the interval between two non-overlapping shooting ranges is smaller than a threshold value.

  As shown in FIG. 7B, there is a gap between the shooting range AS1 of the original element P11 corresponding to the scano shooting S1 in the original protocol P1 and the shooting range BS1 of the original element P21 corresponding to the scano shooting S1 in the original protocol P2. d has occurred. When the interval d is smaller than the threshold value, a range including the shooting ranges AS1 and BS1 and the range between them is set as the first integrated shooting range FS1.

  Returning to the description of FIG. 6, when the determination in step ST <b> 54 is NO, that is, when it is determined that the interval between the plurality of imaging ranges that do not overlap is greater than or equal to the threshold value, the protocol generation function 92 The range including the range is set as the second integrated imaging range including the X-ray irradiation range and the non-irradiation range (step ST55). The protocol generation function 92 sets shooting conditions in the second integrated shooting range (step ST56), and proceeds to step ST6 shown in FIG.

  FIG. 7C is a diagram illustrating a case where the interval between a plurality of imaging ranges that do not overlap is greater than or equal to a threshold value.

  As shown in FIG. 7C, there is an interval between the shooting range AS1 of the original element P11 corresponding to the scano shooting S1 in the original protocol P1 and the shooting range BS1 of the original element P11 corresponding to the scano shooting S1 in the original protocol P2. e has occurred. When the interval e is greater than or equal to the threshold value, a range including the imaging ranges AS1 and BS1 and a range between them is set as a second integrated imaging range GS1 including an X-ray irradiation range and a non-irradiation range.

  The second integrated imaging range GS1 includes the imaging ranges AS1 and BS1 as X-ray irradiation ranges, and includes other ranges as non-irradiation ranges. If it is determined that continuous scan imaging is not preferable, such as when the two scano imaging S1 and S2 (two original protocols P1 and P2) are separated from each other, the threshold processing is performed. A second integrated shooting range GS1 is set.

  Returning to the description of FIG. 3, the presentation function 93 displays a new protocol including the integrated element generated in step ST5 on the display 84 in the scan plan (step ST7).

  FIG. 8 is a diagram showing an example of a new protocol display screen.

  The upper right part of FIG. 8 shows two original protocols P1 and P2 scheduled to be used set on the setting screen shown in FIG. By storing the information of the two original protocols P1 and P2 when the preset is stored, the two original protocols P1 and P2 can be displayed on the new protocol display screen. For example, a reference key indicating two original protocols P1 and P2 may be provided in the new protocol PC, or the two original protocols P1 and P2 are held in an independent state, together with differences due to optimization of the original protocol. May be saved.

  The lower right part of FIG. 8 shows a new protocol PC when the first integrated shooting range FS1 is set based on the shooting ranges AS1 and BS1 of the scano shooting S1. The new protocol PC includes five shooting elements corresponding to the four shooting types and the execution order of the five shooting elements. That is, the new protocol PC includes five shooting elements PC1 to PC5 corresponding to the four shooting types S1 to S4 and their execution order PC1 → PC2 → PC3 → PC4 → PC5. Here, the shooting type S1 (shaded portion in the figure) of the new protocol PC corresponds to the integrated element, and means scano shooting related to the first integrated shooting range FS1. Further, one shooting type S2 included in the original protocol P1 and two shooting types S2 included in the original protocol P2 may be combined at a time in the new protocol PC.

  The left side of FIG. 8 shows the shooting ranges AS1 and BS1 of the original elements P11 and P21 corresponding to the scano shooting S1 in the two original protocols P1 and P2 to be used. Here, the case of FIG. 7A will be described. Further, the left side of FIG. 8 shows a first integrated imaging range FS1 of the integrated element PC1 corresponding to the scano imaging S1 in the new protocol PC. That is, the two original elements P11 and P21 are collected in the imaging range of the scano imaging S1.

  With the new protocol display screen shown in FIG. 8, the operator can confirm, for example, the original elements corresponding to which photographing type have been collected before and after the generation of the new protocol. In addition, after the generation of the new protocol PC, it is possible to perform shooting in units of original protocol (NO in step ST8 described later).

  Furthermore, a correspondence table between a combination of a plurality of original protocols and a generated new protocol can be newly registered, or a new protocol can be newly registered as an original protocol. In those cases, the generation of the next new protocol can be simplified. Further, the generation of a new protocol is not limited to the time of inspection but can be configured to be performed when a preset is created.

  As described above, a plurality of original elements are combined by integrating a plurality of imaging ranges from the viewpoint of reducing the exposure of the patient O, but the present invention is not limited to this case. In step ST53 and ST56, the protocol generation function 92 selects and sets a plurality of shooting conditions related to a plurality of original elements corresponding to the same shooting type, for example, shooting conditions of an integrated element from a plurality of focus size presets. The plurality of original elements may be collected, or the operator may be able to select between that case and the case where a plurality of shooting ranges are integrated.

  In steps ST53 and ST56, the protocol generation function 92 uses representative values of a plurality of shooting conditions preset corresponding to a plurality of original elements, for example, the maximum value, the minimum value, and the average value as shooting conditions for the integrated element. Can be selected and set. In addition, the priority at the time of selection setting is assigned in advance to each of a plurality of original protocols, and the protocol generation function 92 determines that the element of the original protocol with the higher priority at the time of selection setting is selected in steps ST53 and ST56. The preset photographing conditions can be selected and set as the integrated element photographing conditions preferentially. Further, when the imaging condition is tube current, the protocol generation function 92 selects and sets a plurality of tube currents preset corresponding to the plurality of original elements in steps ST53 and ST56, respectively, according to the imaging range. be able to. This is to ensure the image quality of the image.

  Further, the grouping and execution order that minimizes the time required for the whole of a plurality of imaging corresponding to a plurality of imaging elements included in the new protocol (including waiting time between imaging), that is, the examination time of the patient O In some cases, the grouping method and the execution order are set such that the minimum is the minimum. In some cases, the execution order of the photographing elements is set according to the priority of execution of photographing. For example, in the case of including a shooting type (including reconstruction) performed for the purpose of screening for finding a person with a specific disease, the shooting element corresponding to the shooting type is given priority, and other time-consuming shooting types or The shooting element corresponding to the shooting type including the processing with high load is set so as to be postponed. Furthermore, when an original protocol including dual energy imaging that performs X-ray irradiation with different energy is set as one of a plurality of original protocols scheduled to be used, a monochrome image is displayed after generating a tomographic image in step ST7. A confirmation display as to whether or not to add, that is, whether or not to add a subtraction process may be performed.

  Returning to the description of FIG. 3, in step ST7, the operator operates the input circuit 83 to select the integrated shooting type included in the new protocol, so that the protocol generation function 92 integrates the shooting types. Can also be released manually. On the other hand, in step ST7, when the operator operates the input circuit 83 and selects a plurality of shooting types included in the original protocol, the protocol generation function 92 manually integrates the plurality of shooting types. You can also When a plurality of shooting types selected by the operator by operating the input circuit 83 cannot be integrated, the protocol generation function 92 can also display an error message. In that case, if it is determined that integration among some of the plurality of shooting types is possible, the protocol generation function 92 can also present the fact to the operator.

  The image generation function 94 determines whether or not to execute a plurality of imaging elements included in the new protocol displayed in step ST7 (which may include original elements in addition to integrated elements) according to the execution order ( Step ST8). Here, the operator can visually recognize a new protocol generated for the purpose of reducing the exposure of the patient O and finally determine whether or not to perform imaging using the protocol.

  If YES in step ST8, that is, if it is determined that a plurality of imaging elements included in the displayed new protocol are to be executed according to the execution order, the image generation function 94 requires reconfiguration included in the new protocol. A reconstruction condition is set for an imaging type to be performed, that is, an imaging element corresponding to tomographic imaging (step ST9). The reconstruction condition includes a reconstruction function, a reconstruction interval, and the like. Although a plurality of original protocols scheduled to be used are optimized in steps ST5 and ST6, the image generation function 94 can follow the reconstruction conditions before they are collected.

  Here, the image generation function 94 can also perform reorganization in the execution order of the plurality of imaging elements organized in step ST6, based on the reconstruction conditions set in step ST9. As the image reconstruction process becomes more sophisticated, the processing time may take a great deal depending on the shooting conditions, and it may take time to occupy the reconstruction unit and determine the success or failure of the shooting. Therefore, the image generation function 94 reorganizes the execution order in the order of relatively short processing time in each imaging element based on the reconstruction condition set for each imaging type of the original protocol scheduled to be used.

  The image generation function 94 controls the X-ray tube 62 and the X-ray detector 65 via the imaging controller 23 to perform a plurality of imaging corresponding to a plurality of imaging elements included in the new protocol according to the execution order. Execute (step ST10).

  Here, the photographing conditions of the photographing element included in the new protocol set in steps ST53 and ST56 can be reflected in the photographing element of the original protocol. All of the reflected shooting conditions can be saved together with the new protocol, or only the shooting conditions selected by the operator among the reflected shooting conditions can be saved.

  The image generation function 94 generates an image such as a scanogram and a tomographic image based on data collected by imaging according to the new protocol, and displays the image on the display 84 (step ST11).

  In step ST11, the image generation function 94 may display an image generated based on shooting according to the new protocol on the display 84 in units of a plurality of original protocols scheduled to be used corresponding to the new protocol. You may display on the display 84 per protocol unit. The former is realized by adding information about an original protocol corresponding to the new protocol to an image or series generated according to the new protocol.

  In step ST11, the image generation function 94 determines the relevance between images obtained by photographing according to the new protocol, and groups highly related images on the display 84 when they are interpreted. You can also. For example, when the imaging protocol without contrasting and the imaging protocol with contrasting are set to be used at the same site, the image generation function 94 associates the image based on the imaging protocol without contrasting with the image based on the imaging protocol with contrasting. Are displayed on the display 84 in parallel.

  If NO in steps ST2 and ST3, that is, if it is determined that generation of a new protocol is impossible, the image generation function 94 corresponds to the type of imaging that is included in the original protocol and requires reconstruction, that is, tomography. A reconstruction condition is set for the imaging element to be performed (step ST12). The image generation function 94 controls the X-ray tube 62 and the X-ray detector 65 via the imaging controller 23 to perform a plurality of imaging corresponding to a plurality of imaging elements included in the original protocol according to the execution order. Execute (step ST13).

  FIG. 9 is a diagram illustrating an example of a confirmation screen when a new protocol cannot be generated.

  FIG. 9 shows an example of a confirmation screen when the original protocol to be used cannot be optimized, that is, when a new protocol cannot be generated. As the confirmation screen shown in FIG. 9, for example, a message box arranged in front of the setting screen shown in FIG. 4 can be used. An example of the case where a new protocol cannot be generated is a case where there is only one original protocol to be used as shown in FIG.

  Returning to the description of FIG. 3, the image generation function 94 generates an image based on data collected by photographing according to the original protocol, and displays the image on the display 84 (step ST11).

  If NO in step ST4 or ST8, that is, if it is determined that generation of a new protocol is not necessary, the image generation function 94 performs an imaging type included in the original protocol that requires reconstruction, that is, tomography. A reconstruction condition is set for the corresponding imaging element (step ST12). The image generation function 94 controls the X-ray tube 62 and the X-ray detector 65 via the imaging controller 23 to perform a plurality of imaging corresponding to a plurality of imaging elements included in the original protocol according to the execution order. Execute (step ST13). The image generation function 94 generates an image based on data collected by photographing according to the original protocol, and displays the image on the display 84 (step ST11).

  In the prior art, when a plurality of original protocols are used, it is necessary to manually optimize the shooting range and the like before executing each original protocol. For this reason, since it takes time for optimization before the execution of each original protocol, there is a problem that the throughput of the entire inspection is lowered. In addition, a method of registering conditions in advance according to a combination of a plurality of original protocols can be used, but the number of combinations is necessary, and the number of original protocols increases and the difficulty of reusing original protocols occurs. It will be.

  Further, in the conventional technique, when a plurality of original protocols are used and are continuously executed, the shooting ranges of the corresponding shooting types may overlap between the plurality of original protocols. In that case, unnecessary exposure occurs.

  According to the X-ray CT apparatus 10, the same imaging type is specified among a plurality of original protocols, and the X-ray exposure to the patient O is performed by collecting the imaging ranges of a plurality of original elements corresponding to the same imaging type. A new protocol such as a small one can be freely generated, and the new protocol can be presented to the operator. Further, according to the X-ray CT apparatus 10, the examination time can be reduced by optimizing the imaging conditions of a plurality of original elements corresponding to the same imaging type.

(First modification)
As described above, when scano shooting is included as the same shooting type in a plurality of original protocols scheduled to be used, a method for generating a new protocol by collecting scano shooting shooting ranges has been described. However, the imaging types that can be the same are not limited to scano imaging. Here, a method for integrating the imaging range of tomographic imaging (non-helical imaging or helical imaging) will be described.

  FIG. 10 is a diagram showing an operation example of step ST5 in FIG. 3 as a flowchart.

  In FIG. 10, tomographic imaging is included in the two original protocols scheduled to be used as the same imaging type. In step ST4 (shown in FIG. 3), a new protocol is generated by combining the original protocols related to tomographic imaging. The case where it is determined will be described.

  In FIG. 10, the same steps as those shown in FIG.

  The protocol generation function 92 determines whether or not the tomographic imaging as the same imaging type has an overlapping imaging range (step ST51A). When the determination in step ST51A is YES, that is, when it is determined that there is an overlap of imaging ranges in tomography, the protocol generation function 92 applies an X-ray irradiation to a range including a plurality of imaging ranges and a range between them. The first integrated shooting range including only the range is set (step ST52). On the other hand, if the determination in step ST51A is NO, that is, if it is determined that there is no duplication of imaging ranges in tomography, the protocol generation function 92 determines whether or not the intervals between the plurality of imaging ranges are smaller than a threshold value. (Step ST54).

  In this manner, a new protocol is generated that is related to different original protocols, and that is executed as a series of imaging by collecting the tomographic imaging ranges individually executed at different timings.

  The protocol generation function 92 sets shooting conditions in the first integrated shooting range (step ST53A). The protocol generation function 92 can set an imaging condition (for example, an X-ray irradiation condition) with an appropriate helical pitch and beam pitch so that each image in a plurality of imaging ranges (parts) can maintain an optimum image quality.

  FIG. 11 is a diagram illustrating an example of a new protocol display screen.

  The upper right part of FIG. 11 shows two original protocols P4 and P5 to be used. In the lower right part of FIG. 11, the first integrated imaging range FS1 is set based on the imaging ranges AS1 and BS1 of the scano imaging S1, and the first based on the imaging ranges AS2 and BS2 of the non-helical imaging S2 as tomography. A new protocol PC when the integrated photographing range FS2 is set is shown.

  The new protocol PC includes five shooting elements corresponding to the four shooting types and the execution order of the five shooting elements. That is, the new protocol PC includes five shooting elements PC1 to PC5 corresponding to the four shooting types S1 to S4 and their execution order PC1 → PC2 → PC3 → PC4 → PC5. Here, the shooting type S1 (shaded portion in the figure) of the new protocol PC corresponds to the integrated element, and means scano shooting related to the first integrated shooting range FS1. The shooting type S2 (shaded portion in the figure) of the new protocol PC corresponds to the integrated element and means non-helical shooting related to the first integrated shooting range FS2.

  The left side of FIG. 11 shows the shooting ranges AS1 and BS1 of the original elements P41 and P51 corresponding to the scano shooting S1 in the two original protocols P4 and P5 to be used. A range including the shooting ranges AS1 and BS1 is set as the first integrated shooting range FS1. That is, the original elements P41 and P51 are collected in the photographing range of the scano photographing S1.

  The middle side of FIG. 11 shows imaging ranges AS2 and BS2 of original elements P42 and P52 corresponding to non-helical imaging S2 in the two original protocols P4 and P5 to be used. A range including the shooting ranges AS2 and BS2 is set as the first integrated shooting range FS2. That is, the original elements P42 and P52 are collected in the shooting range of the non-helical shooting S2.

  Returning to the description of FIG. 10, the protocol generation function 92 sets the shooting conditions in the first integrated shooting range set in step ST52 (step ST53A), and proceeds to step ST6 shown in FIG. In step ST53A, the protocol generation function 92 may summarize the shooting conditions. For example, when the shooting conditions AS2 and BS2 of the non-helical shooting S2 shown in FIG. 11 are four shooting times of 40 [mm], respectively, the protocol generation function 92 performs the first step of the non-helical shooting S2 in the new protocol. The shooting conditions of one integrated shooting range FS2 are collected into one shot of 160 [mm].

  According to the first modification of the X-ray CT apparatus 10, the same imaging type is specified among a plurality of original protocols, and the imaging ranges of a plurality of original elements corresponding to the same imaging type are collected to the patient O. New protocols such as small X-ray exposure can be freely generated, and new protocols can be presented to the operator.

(Second modification)
Chest slice protocol that includes non-contrast tomography (non-helical imaging or helical imaging) as the imaging type, and a chest slice protocol that includes contrast-enhanced tomography as the imaging type for the same region Consider the order of execution. In this case, in step ST6 shown in FIG. 3, the protocol generation function 92 generates a new protocol by organizing execution order so that non-contrast tomography precedes tomography by contrast.

  In addition, when a plurality of original protocols each including tomographic imaging as imaging types are set to be used, the protocol generation function 92 performs the entire tomographic imaging with a plurality of contrasts in steps ST5 and ST6 shown in FIG. A new protocol is generated by organizing the execution order so that the amount of contrast agent used is minimized. For example, when the original protocol to be used is the abdominal contrast protocol and the lower limb contrast protocol, the imaging type without contrast and the imaging type with contrast in the abdominal contrast protocol are sequentially performed, and the imaging type without contrast in the lower limb contrast protocol and The imaging type with contrast is sequentially performed.

  In this case, the protocol generation function 92 integrates the imaging range of the abdomen and the lower limbs, and also includes the imaging type without contrasting related to the imaging range, the imaging type with contrasting related to the abdomen, and the imaging related to the lower limbs. A new protocol is generated by organizing the execution order of sequentially performing the shooting types. By using the contrast medium for abdominal contrast as the contrast medium for the lower limbs, the amount of contrast medium can be reduced as a whole in the two abdominal contrast protocols and the lower limb contrast protocols.

  FIG. 12 is a diagram illustrating an example of a new protocol display screen.

  The upper right part of FIG. 12 shows two original protocols P6 and P7 to be used. The lower right part of FIG. 12 shows a new protocol PC when the first integrated imaging range FS1 is set. The new protocol PC includes six shooting elements corresponding to the four shooting types and the execution order of the six shooting elements. That is, the new protocol PC includes six imaging elements PC1, PC2, PC3, PC4 (contrast), PC5 (contrast), PC6 (contrast) corresponding to the four imaging types S1 to S4, and their execution order PC1. → PC2 → PC3 → PC4 (contrast) → PC5 (contrast) → PC6 (contrast). Here, the shooting type S1 (shaded portion in the figure) of the new protocol PC corresponds to the integrated element, and means scano shooting related to the first integrated shooting range FS1.

  The left side of FIG. 12 shows shooting ranges AS1 and BS1 of original elements P61 and P71 corresponding to scano shooting S1 in the two original protocols P6 and P7 to be used. A range including the shooting ranges AS1 and BS1 is set as the first integrated shooting range FS1. That is, the original elements P61 and P71 are collected in the shooting range.

  According to the second modification of the X-ray CT apparatus 10, a patient is identified by specifying a related imaging type among a plurality of original protocols and organizing a plurality of original elements corresponding to the related imaging type in the execution order. A new protocol such as small X-ray exposure to O can be freely generated, and the new protocol can be presented to the operator.

(Third Modification)
On the display screen of the new protocol shown in FIG. 8, it is also possible to display information that has changed before and after the generation of the new protocol and the effect of optimization of the original protocol. For example, information changed before and after the generation of a new protocol includes exposure dose, examination time, amount of contrast medium used, total amount of mAs (product of tube current [mA] and time (sec)), reconstruction time, etc. Can be mentioned. The effect of optimization is a difference in information that has changed before and after the generation of a new protocol.

  According to the third modification of the X-ray CT apparatus 10, in addition to the above-described effects, the effects of the optimization of the original protocol can be presented to the operator.

(Fourth modification)
The protocol generation function 92 shown in FIG. 2 displays the original protocol and the new protocol on the display screen on a time axis basis, so that the operator can compare the two. The protocol generation function 92 can also edit the time interval between a plurality of original elements included in the original protocol by operating the input circuit 82 while the operator refers to the new protocol on the display screen. . If there is a contradiction in the time interval, the protocol generation function 92 presents the fact to the operator. The protocol generation function 92 can switch between a display screen showing a time interval before editing and a display screen showing a time interval after editing.

  13 and 14 are diagrams illustrating an example of a time interval editing screen.

  FIG. 13 shows three original protocols P1 to P3 to be used and a new protocol PC based on them. Each of the three original protocols P1 to P3 includes a plurality of original elements and their execution order, and also includes time intervals of a specific plurality of original elements.

  Here, when “original time” is selected on the display screen shown in FIG. 13, the time interval before editing is the time interval between the three original protocols P1 to P3 to be used and the new protocol PC. Is displayed. On the other hand, when “time after optimization” is selected on the display screen, the time interval after editing is displayed as the time interval between the three original protocols P1 to P3 to be used and the new protocol PC. The

  FIG. 14 shows two original protocols P1 and P2 to be used and a new protocol PC based on them. Each of the two original protocols P1 and P2 includes a plurality of original elements and their execution order, and includes a time interval of a specific plurality of original elements.

  Here, when “original time” is selected on the display screen shown in FIG. 14, the time interval before editing is the time interval between the two original protocols P1 and P2 to be used and the new protocol PC. Is displayed. On the other hand, when “time after optimization” is selected on the display screen, the time interval after editing is displayed as the time interval between the two original protocols P1 and P2 to be used and the new protocol PC. The

  According to the fourth modification of the X-ray CT apparatus 10, the time intervals of a plurality of original elements are visualized, and the operator can easily edit the time intervals.

(Shooting management device)
FIG. 15 is a block diagram illustrating an example of the configuration and functions of the imaging management apparatus according to the embodiment.

  FIG. 15 shows an imaging management apparatus 110 and an X-ray CT apparatus C according to the embodiment. The imaging management device 110 includes a processing circuit 181, a storage circuit 182, an input circuit 183, a display 184, and a network interface 185.

  Here, the processing circuit 181, the storage circuit 182, the input circuit 183, and the display 184 have the same configuration as the processing circuit 81, the storage circuit 82, the input circuit 83, and the display 84 shown in FIG.

  The network interface 185 implements various information communication protocols according to the network form. The network interface 185 connects the imaging management apparatus 110 to other devices such as an external X-ray CT apparatus C according to these various protocols. An electrical connection or the like via an electronic network can be applied to this connection. Here, the electronic network means an entire information communication network using telecommunications technology. In addition to a wireless / wired hospital backbone LAN (Local Area Network) and the Internet network, a telephone communication line network, an optical fiber communication network. Cable communication network and satellite communication network.

  When the processing circuit 181 executes the program, the imaging management apparatus 110 has a setting function (setting means) 191, a protocol generation function (protocol generation means) 192, a presentation function (presentation means) 193, as shown in FIG. And the transmission function (transmission means) 194 is executed. Note that all or part of the functions 191 to 194 may be realized by a circuit such as an ASIC provided in the imaging management apparatus 110.

  Here, the functions 191 to 193 are the same as the functions 91 to 93 shown in FIG.

  The transmission function 194 includes a function of transmitting the new protocol generated by the protocol generation function 192 to the X-ray CT apparatus C via the network interface 185. Thereby, the X-ray CT apparatus C can perform imaging according to the new protocol.

  According to the imaging management apparatus 110, the same imaging type is specified among a plurality of original protocols, and the imaging ranges of a plurality of original elements corresponding to the same imaging type are collected to the patient O in the X-ray CT apparatus C. New protocols such as small X-ray exposure can be freely generated, and new protocols can be presented to the operator. Further, according to the imaging management apparatus 110, the examination time in the X-ray CT apparatus C can be reduced by optimizing the imaging conditions of a plurality of original elements corresponding to the same imaging type.

  According to at least one embodiment described above, an appropriate new protocol can be generated from the original protocol.

  The setting functions 91 and 191 are examples of setting means. The protocol generation functions 92 and 192 are examples of protocol generation means. The presentation functions 93 and 193 are examples of presentation means. The image generation function 94 is an example of an image generation unit. The transmission function 194 is an example of a transmission unit.

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

DESCRIPTION OF SYMBOLS 10 X-ray CT apparatus 11 Scanner apparatus 12 Console apparatus 21 Mounting apparatus 62 X-ray tube 65 X-ray detector 81,181 Processing circuit 91,191 Setting function 92,192 Protocol generation function 93,193 Presentation function 94 Image generation function 110 Photographing Management device 194 transmission function

Claims (17)

An X-ray CT apparatus that performs imaging according to an imaging protocol having one or a plurality of imaging elements corresponding to imaging types,
An X-ray source that emits X-rays;
An X-ray detector for detecting the X-ray;
For the first shooting protocol and the second shooting protocol, a first shooting element included in the first shooting protocol and a second shooting element included in the second shooting protocol, corresponding to the same shooting type. Protocol generation means for generating a third imaging protocol including the third imaging element by collectively forming a single third imaging element;
X-ray CT apparatus. The protocol generating means collectively combines the first and second imaging elements corresponding to scano imaging that is the same imaging type as the third imaging element.
The X-ray CT apparatus according to claim 1. The protocol generation means combines the photographing elements by integrating overlapping portions of the photographing range between the first photographing element and the second photographing element corresponding to the scano photographing,
The X-ray CT apparatus according to claim 2. The protocol generation unit is configured to combine the imaging element included in the first imaging protocol and the imaging element included in the second imaging protocol, which corresponds to the tomography that is the same imaging type, and the third imaging element. And
The X-ray CT apparatus according to claim 1. The protocol generation means collects the imaging elements by integrating overlapping portions of the imaging range between the first imaging element and the second imaging element corresponding to the tomography.
The X-ray CT apparatus according to claim 4. The protocol generation means sets the imaging conditions based on the imaging region when collecting the imaging elements.
The X-ray CT apparatus according to claim 5. The protocol generation means sets the shooting condition of the third shooting element based on the shooting condition of the first shooting element and the shooting condition of the second shooting element;
The X-ray CT apparatus according to claim 1. The apparatus further includes an image generating unit that controls the X-ray source and the X-ray detector to perform imaging corresponding to the third imaging element to generate an image.
The X-ray CT apparatus according to claim 1. The image generation means displays the image on the display unit in units of the first and second imaging elements, or displays on the display unit in units of the third imaging element.
The X-ray CT apparatus according to claim 8. In addition to the third imaging element, the protocol generation means includes an imaging element included in the first imaging protocol and an imaging element included in the second imaging protocol that does not correspond to the same imaging type. Generating the third shooting protocol;
The X-ray CT apparatus according to any one of claims 1 to 9. The protocol generation means generates the third imaging protocol by organizing the plurality of imaging elements included in the third imaging protocol in an execution order;
The X-ray CT apparatus according to claim 10. The protocol generation means includes a plurality of imaging elements included in the third imaging protocol, a non-contrast imaging element corresponding to an imaging type including non-contrast and a contrast imaging element corresponding to an imaging type including contrast. If included, the knitting is performed such that the non-contrast imaging element precedes the contrast imaging element.
The X-ray CT apparatus according to claim 11. The protocol generation unit performs the organization so that the amount of contrast agent is minimized when the plurality of imaging elements included in the third imaging protocol includes a plurality of imaging elements corresponding to imaging types including contrast. ,
The X-ray CT apparatus according to claim 11 or 12. An X-ray CT apparatus that performs imaging according to an imaging protocol having one or a plurality of imaging elements corresponding to imaging types,
An X-ray source that emits X-rays;
An X-ray detector for detecting the X-ray;
When the plurality of imaging elements included in the first imaging protocol includes a non-contrast imaging element corresponding to an imaging type including non-contrast and a contrast imaging element corresponding to an imaging type including contrast, the non-contrast imaging Protocol generating means for generating a third imaging protocol including the plurality of imaging elements by organizing the plurality of imaging elements in order of execution so that the elements precede the imaging element of the contrast;
X-ray CT apparatus. The protocol generation unit performs the organization so that the amount of contrast agent is minimized when the plurality of imaging elements included in the third imaging protocol includes a plurality of imaging elements corresponding to imaging types including contrast. ,
The X-ray CT apparatus according to claim 14. An imaging management apparatus that generates information related to an imaging protocol having one or a plurality of imaging elements corresponding to an imaging type, and transmits information related to the imaging protocol to an X-ray CT apparatus,
For the first shooting protocol and the second shooting protocol, a first shooting element included in the first shooting protocol and a second shooting element included in the second shooting protocol, corresponding to the same shooting type. Protocol generation means for generating a third imaging protocol including the third imaging element by collectively forming a single third imaging element;
A shooting management device. An imaging management apparatus that generates information related to an imaging protocol having one or a plurality of imaging elements corresponding to an imaging type, and transmits information related to the imaging protocol to an X-ray CT apparatus,
When the plurality of imaging elements included in the first imaging protocol includes a non-contrast imaging element corresponding to an imaging type including non-contrast and a contrast imaging element corresponding to an imaging type including contrast, the non-contrast imaging A protocol generating means for generating a third imaging protocol including the plurality of imaging elements by organizing the plurality of imaging elements in an execution order so that the elements are ahead of the contrast imaging elements;
A shooting management device.

Images