JP6129525B2 - Image processing apparatus and X-ray diagnostic apparatus - Google Patents

Description

  Embodiments described herein relate generally to an image processing apparatus and an X-ray diagnostic apparatus that process medical image data.

  Conventionally, a treatment method (stent graft treatment) is known in which a folded special artificial blood vessel (stent graft) is inserted into an artery and the stent graft is expanded at the site of the aneurysm in the artery.

  In this stent graft treatment, the size and length of the stent graft to be actually used are determined in advance prior to the stent graft treatment. When the stent graft is actually inserted into the blood vessel, the starting point of expansion in the stent graft is adjusted to a desired position, but this operation can be easily performed by the operator. On the other hand, the end point of the expanded stent graft may deviate from the position assumed by the operator.

  This is attributed to the fact that the blood vessel is greatly bent (for example, bent). Therefore, whether or not the stent graft can be placed in a desired position often depends on the experience of the operator.

  As a technique for detecting how a blood vessel bends, for example, a technique is known in which curvature is calculated individually for a plurality of locations (a plurality of segments) on the blood vessel from a blood vessel image (see, for example, Patent Document 1).

JP 2011-87711 A

  According to the technique disclosed in Patent Document 1, the curvature can be calculated individually for a plurality of locations on the blood vessel. However, in order to place the stent graft at a desired position during the stent graft treatment, the technique is still used. You have to rely on the experience of the person.

  Under such circumstances, when performing stent graft treatment, grasp the exact expansion mode and insertion mode in advance when the stent graft to be actually used is inserted and expanded into the blood vessel to be treated, and the stent graft can be used without relying on experience. A technique that enables indwelling at a desired position is desired.

  The present invention has been made in view of the above circumstances, and grasps in advance the exact expansion mode and insertion mode when a stent graft actually used in stent graft therapy is inserted into a blood vessel to be treated and expanded. It is an object of the present invention to provide an image processing apparatus and an X-ray diagnostic apparatus that can perform the above-described processing.

An image processing apparatus according to an embodiment includes:
In order to designate, on the first medical image data, a site where the stent graft is to be placed among the blood vessels shown in the first medical image data which is image data about a region including a blood vessel into which the stent graft is inserted. An indwelling site designation part of
A blood vessel information calculation unit for calculating a curvature and a length of the designated portion on the first medical image data among the blood vessels;
A stent graft designating part for designating a desired stent graft;
A stent graft information storage unit for storing stent graft information which is information relating to the stent graft;
Based on the stent graft information, an expansion mode calculation unit that generates stent graft expansion mode data indicating a mode of bending when expanding the desired stent graft,
A synthesis processing unit that synthesizes the first medical image data and the stent graft expansion mode data to generate second medical image data;
Equipped with,
The expansion mode calculation unit includes a database in which the stent graft information and the mode of bending at the time of expansion are associated with each other, and generates the stent graft expansion mode data with reference to the database. To do.

An X-ray diagnostic apparatus according to one embodiment
An X-ray irradiation unit that irradiates the subject with X-rays;
An X-ray detector that detects X-rays transmitted through the subject and generates X-ray image data of a region including a blood vessel into which a stent graft is inserted in the subject;
Among the blood vessels shown in the X-ray image data, an indwelling site designating unit for designating a site for placing the stent graft on the X-ray image data;
A blood vessel information calculation unit for calculating a curvature and a length of the designated portion on the X-ray image data among the blood vessels;
A stent graft designating part for designating a desired stent graft;
A stent graft information storage unit for storing stent graft information which is information relating to the stent graft;
Based on the stent graft information, an expansion mode calculation unit that generates stent graft expansion mode data indicating a mode of bending when expanding the desired stent graft,
A synthesis processing unit that synthesizes the X-ray image data and the stent graft expansion mode data to generate stent graft insertion mode data;
Equipped with,
The expansion mode calculation unit includes a database in which the stent graft information and the mode of bending at the time of expansion are associated with each other, and generates the stent graft expansion mode data with reference to the database. To do.

FIG. 1 is a block diagram showing a system configuration example of an X-ray diagnostic apparatus according to an embodiment of the present invention. FIG. 2 is a diagram showing a flowchart of the “second medical image data” generation / display process under the control of the system control unit of the X-ray diagnostic apparatus according to the present embodiment. FIG. 3 is a schematic diagram showing a state in which stent graft treatment is performed on a blood vessel in which an aneurysm is formed. FIG. 4 is a schematic diagram showing how stent graft treatment is performed on a blood vessel in which an aneurysm is formed. FIG. 5 is a diagram illustrating an example of stent graft information (parameters) that the user refers to when selecting a stent graft to be used. FIG. 6 is a diagram showing a display example of “second medical image data” when the selection of the use candidate stent graft is wrong. FIG. 7 is a diagram illustrating a display example of “second medical image data” when the selection of the use candidate stent graft is appropriate.

  Hereinafter, an image processing apparatus and an X-ray diagnostic apparatus according to an embodiment of the present invention will be described.

  FIG. 1 is a block diagram showing a system configuration example of an X-ray diagnostic apparatus according to an embodiment of the present invention. As shown in the figure, the X-ray diagnostic apparatus 100 according to the present embodiment two-dimensionally detects X-rays that have passed through the X-ray generator 13, the high-voltage generator 15, and the subject P. An X-ray detection unit 20 that generates X-ray projection data based on the detection result, a computer system 30, an aperture control unit 42, and a drive mechanism control unit 43 are provided.

  The X-ray generation unit 13 includes an X-ray tube 11 and an X-ray diaphragm 12.

  The X-ray tube 11 is a vacuum tube that generates X-rays, and accelerates electrons emitted from a cathode (filament) by a high voltage to collide with a tungsten anode to generate X-rays.

  The X-ray diaphragm 12 is an X-ray irradiation range limiting means for irradiating only a desired region to be imaged with X-rays, and is provided for the purpose of reducing the exposure dose to the subject P and improving the image quality. .

  The high voltage generator 15 includes an X-ray controller 41 and a high voltage generator 14.

  The X-ray control unit 41 receives an X-ray condition command from the system control unit 31, generates a voltage application control signal for generating a voltage specified by the X-ray condition command, and sends it to the high voltage generator 14. To do. As an example of the X-ray condition, for example, a tube voltage applied between the electrodes of the X-ray tube 11 in the X-ray generator 13, an X-ray irradiation time, an X-ray irradiation timing, and the like can be given.

  The high voltage generator 14 generates a high voltage corresponding to the voltage application control signal received from the X-ray control unit 41 and applies it to the X-ray generation unit 13.

  By configuring the X-ray generator 13 and the high voltage generator 15 as described above, the X-ray generated by the X-ray tube 11 passes through the opening region of the X-ray restrictor 12 and then the region of interest of the subject P. , Is incident on a flat detector 21 to be described later, and is detected by the flat detector 21.

  The X-ray detection unit 21 includes a flat panel detector (FPD) 21, a gate driver 24, and a projection data generation unit 25.

  The flat detector 21 converts X-rays that have passed through the region of interest of the subject P into charges and accumulates them. The flat detector 21 is configured by two-dimensionally arranging minute detection elements for detecting X-rays in the column direction and the line direction.

  Each of the detection elements senses an X-ray and generates a charge in accordance with an incident X-ray dose, a charge storage capacitor for storing the charge generated in the photoelectric film, and a charge stored in the charge storage capacitor. TFT (Thin Film Transistor) that reads out at a predetermined timing.

  As a method for detecting an X-ray image, in addition to a method for directly converting X-rays into electric charges, a method for converting X-rays into light and then converting them into charges can be used.

  The projection data generation unit 25 converts the electric charges read from the flat detector 21 into projection data corresponding to the X-ray detection amount. Specifically, the projection data generation unit 25 includes a charge / voltage converter 22 and an A / D converter 23.

  The charge / voltage converter 22 converts the charge read from the flat detector 21 into a voltage and outputs the voltage.

  The A / D converter 23 converts the output of the charge / voltage converter 22 into a digital signal.

  The gate driver 24 generates a driving pulse for reading out the electric charge accumulated in the flat detector 21. X-rays that have passed through the subject P are converted into electric charges and accumulated by the semiconductor detection element of the flat detector 21. The accumulated charges are sequentially read out by the drive pulse supplied by the gate driver 24.

  The X-ray generation unit 13 and the X-ray detection unit 20 described above constitute an imaging system of the X-ray diagnostic apparatus 100 according to the present embodiment.

  Incidentally, the X-ray diagnostic apparatus 100 includes a substantially C-shaped C arm 131. One end of the C-arm 131 is provided with an X-ray generator 13 that generates X-rays, and the other end is an X-ray detector that detects X-rays irradiated from the X-ray generator 13 and transmitted through the subject P. Part 20 is provided. The X-ray generator 13 and the X-ray detector 20 are arranged to face each other with the subject P placed on a bed (not shown). A couchtop 132 (not shown) is movably provided on the couch (not shown), and the subject P is placed on the couchtop 132.

  The drive mechanism control unit 43 generates a drive signal for driving the C arm 131 and the top plate 132 in accordance with a movement control instruction from the system control unit 31, and operates according to the drive signal to operate the C arm. A mechanism for moving 131 and rotating the C arm 131 about the body axis of the subject P and a mechanism for moving the top 132 are provided.

  The computer system 30 includes a system control unit 31, an operation unit 32, a display unit 33, an image data generation unit 34, a storage unit 35, and a stent graft calculation unit 36.

  The system control unit 31 includes a CPU and a ROM, and comprehensively controls each unit in the X-ray diagnostic apparatus 100 to execute control related to image data processing and display.

  The operation unit 32 is a member for a user such as a doctor to input various commands and the like, and appropriately includes, for example, an input device such as a keyboard, a trackball, a joystick, and a mouse, a display panel, and various switches. Interactive interface.

  For example, the operation unit 32 inputs subject information, inputs a movement instruction signal to the X-ray diaphragm 12, sets the position of the top plate 132, sets X-ray irradiation conditions including tube voltage and tube current of the imaging system, In addition, it is used for an operator's input operation or the like in “second medical image data generation / display processing” described later.

  The display unit 33 is a device that displays various data such as image data.

  The image data generation unit 34 includes an image calculation circuit 341 and an image data storage circuit 342.

  Based on the X-ray image data (X-ray projection data) generated by the X-ray detector 20, the image calculation circuit 341 generates normal diagnostic X-ray image data (hereinafter referred to as first medical image data and To generate).

  The image data storage circuit 342 includes “first medical image data”, “stent graft expansion mode data (details will be described later)”, and “second medical image data (first synthesized with stent graft expansion mode data). Medical image data; details will be described later) ”.

  The storage unit 35 is a storage unit that stores various data such as image data. Image data storage and image data read processing in the storage unit 35 are performed under the control of the system control unit 31.

  The stent graft calculation unit 36 includes a DB storage unit 36m that stores a “stent graft expansion mode database” to be described later, and performs various calculation processes (second medical image data generation process) related to the stent graft.

  Specifically, the stent graft calculation unit 36 calculates the curvature of the blood vessel (for example, the inner diameter) on the first medical image data generated by the image calculation circuit 341 and inputs the curvature by operating the operation unit 32 by the user. Based on the various information (details will be described later), the method of bending the stent graft at the time of expansion (hereinafter referred to as the expansion mode) is calculated, and the stent graft expansion mode data and the first medical image data indicating the expansion mode are calculated. And “second medical image data” is generated. The second medical image data is a diagram showing a simulation result in a case where a stent graft as a use candidate is actually inserted into a blood vessel to be treated and expanded.

  Details of the generation / display processing of the second medical image data will be described later with reference to FIG. In the X-ray diagnostic apparatus 100 according to the present embodiment, the X-ray image data (first medical image data) relating to the blood vessel to be treated of the subject P collected in advance when the stent graft treatment is executed is used to obtain the stent graft. The curvature and length of the blood vessel from the start point to the end point of the planned indwelling site are calculated and presented to the user. The user refers to the information and determines a candidate stent graft to be actually used. The X-ray diagnostic apparatus 100 calculates stent graft expansion mode data indicating the expansion mode of the stent graft of the use candidate designated by the user, and synthesizes it with the first medical image data corresponding to the stent graft expansion mode data. Second medical image data indicating the indwelling state of the stent graft in the blood vessel is generated and presented.

  Here, an X-ray control unit 41 that controls the high voltage generator 14, an aperture control unit 42 that controls the X-ray diaphragm 12, and a drive mechanism control unit 43 that controls the drive of the C-arm 131 and the top plate 132 include: Controlled by the system control unit 31.

  Hereinafter, the “second medical image data” generation / display process under the control of the system control unit 31 of the X-ray diagnostic apparatus 100 according to the present embodiment will be described in detail with reference to FIG. FIG. 2 is a flowchart of the “second medical image data” generation / display process under the control of the system control unit 31 of the X-ray diagnostic apparatus 100 according to the present embodiment.

  First, the system control unit 31 generates first medical image data by executing the above-described processing related to X-ray imaging (step S1). That is, step S1 is a step of collecting first medical image data that is a normal X-ray diagnostic image for the region of interest of the subject P (region including the blood vessel to be treated).

  In the “calculation of the curvature of the blood vessel” to be described later, it is necessary to consider the three-dimensional bending method of the blood vessel. Therefore, in the collection of the first medical image data, a plurality of points can be obtained as necessary. Collection may be performed, and the first medical image data may be CT image data. That is, the first medical image data is preferably image data including three-dimensional information.

  Subsequently, the system control unit 31 outputs the first medical image data collected in step S1 to the display unit 33 and causes the display unit 33 to display the first medical image data (step S2).

  Here, the user visually recognizes the first medical image data which is the X-ray diagnostic image displayed on the display unit 33 in step S2, and on the displayed first medical image data, the planned site of placement of the stent graft. A start point and an end point related to are set (step S3). More specifically, in this step S3, the user operates the operation unit 32, aligns the pointer with the desired position on the first medical image data displayed on the display unit 33, and sets the stent graft placement site. Determine the start and end points.

  After completing the process in step S3, the system control unit 31 calculates the curvature and length of the blood vessel at the site from the start point to the end point set by the user on the first medical image data in step S3 (step S4). ).

  The “information indicating the curvature and length of the blood vessel portion designated by the user” calculated in step S4 is referred to as “blood vessel information”. A known technique may be used as a technique for calculating the curvature and length of the blood vessel on the display image. More specifically, the curvature of the blood vessel may be calculated using a CAD tool for obtaining the curvature of the cable, for example.

  3 and 4 are schematic views showing a state in which stent graft treatment is performed on a blood vessel in which an aneurysm is formed. In the example shown in FIGS. 3 and 4, the stent graft 51 is inserted into the blood vessel in which the aneurysm is formed (see FIG. 3), and the stent graft 51 is expanded in the blood vessel (see FIG. 4). As can be seen from these figures, the location of the aneurysm a does not affect the placement position of the stent graft, and an inappropriate value is calculated if the location of the aneurysm a is included in the calculation of the curvature of the blood vessel. . Therefore, in calculating the curvature, the curvature is calculated on the assumption that the line connecting both end portions of the aneurysm a (the origin portion a1 and the end portion a2) of the aneurysm is the inner diameter of the blood vessel, not including the portion of the aneurysm a. To do.

  As a method for detecting the aneurysm, for example, a method in which the user operates the operation unit 32 and designates the starting part a1 and the ending part a2 of the aneurysm a can be mentioned. In this way, the position of the aneurysm a may be specified by the user's manual setting. Alternatively, an automatic discrimination method may be employed in which increase / decrease in blood vessel diameter is detected by software and an aneurysm is detected when an extreme increase in blood vessel diameter is detected.

  With reference to the blood vessel information calculated in step S4, the user determines a stent graft to be actually used (hereinafter referred to as “use candidate stent graft”) (step S5). Specifically, the user can select various information (stent graft information) such as “device name”, “dimension (determined by“ length ”and“ diameter ”),“ material ”,“ manufacturer information ”, etc. ), The input candidate stent graft is directly input / selected by the operation of the operation unit 32.

  FIG. 5 is a diagram illustrating an example of stent graft information (parameters) that the user refers to when selecting and determining a stent graft to be used. In the example shown in the figure, “Vessel diameter (mm)”, “Stent graft diameter (mm)”, and “Stent graft length (cm)” are used as parameters, and the manufacturers (A company, B company, C company,...) Several types of stent grafts are listed for each. The user refers to, for example, a database as shown in FIG. 5 and determines the most appropriate “use candidate stent graft”.

  Subsequently, the stent graft calculation unit 36 controls the stent graft information such as “device name”, “dimension”, “material”, “manufacturer information”, etc. of the candidate stent graft determined in step S5 under the control of the system control unit 31; With reference to the “stent graft expansion mode database” stored in the DB storage unit 36m provided in the calculation unit 36, the expansion mode (stent graft expansion mode data) of the use candidate stent graft is calculated (step S6).

  Here, the “stent graft expansion mode database” refers to stent graft information (for example, various information such as “device name”, “dimension”, “material”, “manufacturer information”) and the expansion mode of each stent graft for a plurality of stent grafts. (For example, an expansion mode when the expansion is about 80% of the maximum expansion) is associated with the database. In other words, the “stent graft expansion mode database” is a database configured to be able to derive the expansion mode of the use candidate stent graft based on the stent graft information related to the use candidate stent graft.

  It should be noted that an expansion mode can be derived based on stent graft information related to a use candidate stent graft without providing a “stent graft expansion mode database”. That is, based on the curvature and length of the blood vessel from the start point to the end point of the stent graft placement planned site, the stent graft information related to the use candidate stent graft, and the shape change characteristics of the use candidate stent graft, how the use candidate stent graft is processed. You just have to figure out if it will expand.

  After calculating the expansion mode of the use candidate stent graft in step S6, the stent graft calculation unit 36 controls the stent graft expansion mode data, which is information indicating the expansion mode, and the stent graft expansion mode data corresponding to the stent graft expansion mode data. “Second medical image data” obtained by combining the first medical image data is generated (step S7).

  As a technique for combining (superimposing) the three-dimensional stent graft expansion mode data and the first medical image data, a known technique such as alignment using a 3D road map may be used.

  More specifically, for example, the stent graft expansion mode data may be projected onto a two-dimensional image and superimposed on the first medical image data (X-ray image data).

  Hereinafter, the second medical image data will be described in detail with reference to FIGS. 6 and 7. FIG. 6 is a diagram showing a display example of “second medical image data” when the selection of the use candidate stent graft is wrong. FIG. 7 is a diagram illustrating a display example of “second medical image data” when the selection of the use candidate stent graft is appropriate.

  In the example shown in FIG. 6, the use candidate stent graft 51 has reached the branch b of the blood vessel. Thus, when the use candidate stent graft 51 is an inappropriate stent graft, this can be easily recognized.

  According to the present embodiment, by performing the processing of the flowchart shown in FIG. 2, it is possible to know in advance the failure in selecting the use candidate stent graft 51 in this way. When the second medical image data as shown in FIG. 6 has been acquired, the user may select another stent graft as a use candidate stent graft and perform simulation again.

  On the other hand, in the example shown in FIG. 7, the use candidate stent graft 51 does not reach the blood vessel bifurcation b. That is, the second medical image data in the example shown in FIG. 7 indicates that the use candidate stent graft 51 is an appropriate stent graft. In this case, the stent graft treatment may be executed by actually using the use candidate stent graft 51.

  As described above, according to the present embodiment, it is possible to grasp in advance an accurate expansion mode and insertion mode when a stent graft actually used in stent graft therapy is inserted into a blood vessel to be treated and expanded. An image processing apparatus and an X-ray diagnostic apparatus can be provided. Specifically, according to the image processing apparatus and the X-ray diagnostic apparatus according to the present embodiment, for example, the following effects can be obtained.

-Since it is possible to accurately grasp in advance the possibility of failure such as when the stent graft at the time of expansion reaches the bifurcation of the blood vessel, it is possible to grasp an appropriate stent graft in advance.

-For example, at the bent part of a blood vessel, the length differs between the inner diameter and the outer diameter, so it is difficult to determine which stent graft is appropriate to use. However, according to the present embodiment, an appropriate stent graft and its expansion mode and insertion mode can be easily and accurately known without depending on the experience of the operator.

  Although one embodiment of the present invention has been described, this one embodiment is presented as an example and is not intended to limit the scope of the invention. The new embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. The one embodiment and its modifications 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.

    DESCRIPTION OF SYMBOLS 11 ... X-ray tube, 12 ... Line restrictor, 13 ... X-ray generation part, 14 ... High voltage generator, 15 ... High voltage generation part, 20 ... X-ray detection part, 21 ... Planar detector, 22 ... Charge * Voltage converter, 23 ... A / D converter, 24 ... Gate driver, 28 ... Image processing unit, 30 ... Computer system, 31 ... System control unit, 32 ... Operation unit, 33 ... Display unit, 34 ... Image data generation unit 35 ... Storage unit, 36 ... Stent graft calculation unit, 41 ... X-ray control unit, 42 ... Diaphragm control unit, 43 ... Drive mechanism control unit, 51 ... Stent graft, 51 ... Use candidate stent graft, 100 ... X-ray diagnostic apparatus, 131 ... C-arm, 132 ... Top plate, 341 ... Image operation circuit, 342 ... Image data storage circuit.

Claims (10)

In order to designate, on the first medical image data, a site where the stent graft is to be placed among the blood vessels shown in the first medical image data which is image data about a region including a blood vessel into which the stent graft is inserted. An indwelling site designation part of
A blood vessel information calculation unit for calculating a curvature and a length of the designated portion on the first medical image data among the blood vessels;
A stent graft designating part for designating a desired stent graft;
A stent graft information storage unit for storing stent graft information which is information relating to the stent graft;
Based on the stent graft information, an expansion mode calculation unit that generates stent graft expansion mode data indicating a mode of bending when expanding the desired stent graft,
A synthesis processing unit that synthesizes the first medical image data and the stent graft expansion mode data to generate second medical image data;
Equipped with,
The expansion mode calculation unit includes a database in which the stent graft information is associated with the bending mode at the time of expansion, and generates the stent graft expansion mode data with reference to the database. An image processing apparatus. The blood vessel information calculation unit includes a knob determining unit that determines whether or not a blood vessel is formed in the blood vessel when calculating the curvature of the designated portion of the blood vessel on the first medical image data. When the aneurysm is formed in the blood vessel, the curvature is calculated for the site where the aneurysm is formed using the line connecting the origin and end points of the aneurysm as the inner wall of the blood vessel. The image processing apparatus according to claim 1. In order to designate, on the first medical image data, a site where the stent graft is to be placed among the blood vessels shown in the first medical image data which is image data about a region including a blood vessel into which the stent graft is inserted. An indwelling site designation part of
A blood vessel information calculation unit for calculating a curvature and a length of the designated portion on the first medical image data among the blood vessels;
A stent graft designating part for designating a desired stent graft;
A stent graft information storage unit for storing stent graft information which is information relating to the stent graft;
An expansion mode calculation unit that generates stent graft expansion mode data indicating an expansion mode of the desired stent graft based on the stent graft information;
A synthesis processing unit that synthesizes the first medical image data and the stent graft expansion mode data to generate second medical image data;
Equipped with,
The blood vessel information calculation unit includes a knob determining unit that determines whether or not a blood vessel is formed in the blood vessel when calculating the curvature of the designated portion of the blood vessel on the first medical image data. When the aneurysm is formed in the blood vessel, the curvature is calculated for the site where the aneurysm is formed using the line connecting the origin and end points of the aneurysm as the inner wall of the blood vessel. An image processing apparatus. In order to designate, on the first medical image data, a site where the stent graft is to be placed among the blood vessels shown in the first medical image data which is image data about a region including a blood vessel into which the stent graft is inserted. An indwelling site designation part of
A blood vessel information calculation unit for calculating a curvature and a length of the designated portion on the first medical image data among the blood vessels;
A stent graft designating part for designating a desired stent graft;
A stent graft information storage unit for storing stent graft information which is information relating to the stent graft;
An expansion mode calculation unit that generates stent graft expansion mode data indicating an expansion mode of the desired stent graft based on the stent graft information;
A synthesis processing unit that synthesizes the first medical image data and the stent graft expansion mode data to generate second medical image data;
Equipped with,
The blood vessel information calculation unit
The curvature of the designated part on the first medical image data of the blood vessel is calculated based on the inner wall of the designated part,
When calculating the curvature, it is determined whether or not a blood vessel is formed in the blood vessel, and when a blood vessel is formed in the blood vessel, the portion forming the blood vessel in the inner wall of the designated site is An image processing apparatus that calculates the curvature without using the image processing apparatus. The extended mode calculating section is provided with the stent graft information and the formed by association and extended mode database, claim 3 or, characterized in that with reference to the database to generate the stent graft extension mode data The image processing apparatus according to claim 4 . The image processing according to any one of claims 1 to 5 , wherein the stent graft information includes at least one information of a material, a dimension, a device name, and manufacturer information of the stent graft. apparatus. The image processing apparatus according to any one of claims 1 to 6, wherein the first medical image data is X-ray image data or CT image data collected from a plurality of locations. An X-ray irradiation unit that irradiates the subject with X-rays;
An X-ray detector that detects X-rays transmitted through the subject and generates X-ray image data of a region including a blood vessel into which a stent graft is inserted in the subject;
Among the blood vessels shown in the X-ray image data, an indwelling site designating unit for designating a site for placing the stent graft on the X-ray image data;
A blood vessel information calculation unit for calculating a curvature and a length of the designated portion on the X-ray image data among the blood vessels;
A stent graft designating part for designating a desired stent graft;
A stent graft information storage unit for storing stent graft information which is information relating to the stent graft;
Based on the stent graft information, an expansion mode calculation unit that generates stent graft expansion mode data indicating a mode of bending when expanding the desired stent graft,
A synthesis processing unit that synthesizes the X-ray image data and the stent graft expansion mode data to generate stent graft insertion mode data;
Equipped with,
The expansion mode calculation unit includes a database in which the stent graft information is associated with the bending mode at the time of expansion, and generates the stent graft expansion mode data with reference to the database. X-ray diagnostic equipment. An X-ray irradiation unit that irradiates the subject with X-rays;
An X-ray detector that detects X-rays transmitted through the subject and generates X-ray image data of a region including a blood vessel into which a stent graft is inserted in the subject;
Among the blood vessels shown in the X-ray image data, an indwelling site designating unit for designating a site for placing the stent graft on the X-ray image data;
A blood vessel information calculation unit for calculating a curvature and a length of the designated portion on the X-ray image data among the blood vessels;
A stent graft designating part for designating a desired stent graft;
A stent graft information storage unit for storing stent graft information which is information relating to the stent graft;
An expansion mode calculation unit that generates stent graft expansion mode data indicating an expansion mode of the desired stent graft based on the stent graft information;
A synthesis processing unit that synthesizes the X-ray image data and the stent graft expansion mode data to generate stent graft insertion mode data;
Equipped with,
The blood vessel information calculating unit includes a knob determining unit that determines whether or not a blood vessel is formed in the blood vessel when calculating the curvature of the designated portion on the X-ray image data of the blood vessel, When the aneurysm is formed in the blood vessel, the curvature is calculated with respect to a site where the aneurysm is formed, using a line connecting the origin and end points of the aneurysm as the inner wall of the blood vessel. X-ray diagnostic equipment. An X-ray irradiation unit that irradiates the subject with X-rays;
An X-ray detector that detects X-rays transmitted through the subject and generates X-ray image data of a region including a blood vessel into which a stent graft is inserted in the subject;
Among the blood vessels shown in the X-ray image data, an indwelling site designating unit for designating a site for placing the stent graft on the X-ray image data;
A blood vessel information calculation unit for calculating a curvature and a length of the designated portion on the X-ray image data among the blood vessels;
A stent graft designating part for designating a desired stent graft;
A stent graft information storage unit for storing stent graft information which is information relating to the stent graft;
An expansion mode calculation unit that generates stent graft expansion mode data indicating an expansion mode of the desired stent graft based on the stent graft information;
A synthesis processing unit that synthesizes the X-ray image data and the stent graft expansion mode data to generate stent graft insertion mode data;
Equipped with,
The blood vessel information calculation unit
Calculating the curvature of the designated part of the blood vessel on the X-ray image data based on the inner wall of the designated part;
When calculating the curvature, it is determined whether or not a blood vessel is formed in the blood vessel, and when a blood vessel is formed in the blood vessel, the portion forming the blood vessel in the inner wall of the designated site is The curvature is calculated without using the X-ray diagnostic apparatus.

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