JP2011045449A - Image processor and image diagnostic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processor and an image diagnostic apparatus, easily recognizing the positional relation of a blood vessel and a stent. <P>SOLUTION: The image processor includes: a radiographing part 40 for generating 3D contrast image data by radiographing a subject P wherein a stent is made to indwell in the blood vessel and a contrast medium is injected; and a first processing part 51 for processing the 3D contrast image data generated in the radiographing part 40 and generating alarm image data for alarming a part where the position of the indwelling stent in the subject P is abnormal to a master blood vessel. The first processing part 51 measures cross section data for which the data of the stent included in the 3D contrast image data are sliced on a plane vertical to the traveling direction of the blood vessel and displays, at a display part 53, alarm image data 60a identifying the area of master blood vessel data where the stent is contracted by an alarm color 64 on the basis of the measured result. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image processing apparatus and an image diagnostic apparatus that support diagnosis and treatment using a device such as a catheter.

  As a treatment method for a circulatory system disease, IVR (Interventional Radiology), which is a technique of treating using a catheter or the like that is less invasive and less damaging to a subject than surgical operations, is known ( For example, see Patent Document 1.)

  In this IVR, referring to image data obtained from an image diagnostic apparatus such as an X-ray diagnostic apparatus, an X-ray CT apparatus, an IVR-CT apparatus that combines the X-ray diagnostic apparatus and the X-ray CT apparatus, diagnosis, treatment, Confirmation after treatment is performed. There is a technique for placing a tubular stent in a narrowed blood vessel or a blood vessel having an opening leading to an aneurysm. In addition, there is a technique in which a stent is placed in a blood vessel communicating with an aneurysm, and then a coil is fed into the aneurysm through holes and openings formed in the stent to close the aneurysm.

  When the stent is placed in the blood vessel, it is important that the outer peripheral surface of the stent is inscribed in the blood vessel. For this reason, the positional relationship between the blood vessel and the stent is confirmed with reference to image data obtained from the image diagnostic apparatus by photographing the subject in which the stent is placed and the contrast medium is injected into the blood vessel.

JP 2007-75141 A

  However, since the stent placed in the blood vessel in the skull is very soft and thin, it is difficult to grasp the positional relationship between the blood vessel and the stent represented as a three-dimensional structure from the image data.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide an image processing apparatus and an image diagnostic apparatus that can easily grasp the positional relationship between a blood vessel and a stent.

  In order to solve the above problem, the image processing apparatus according to the first aspect of the present invention is a three-dimensional image obtained from an image diagnostic apparatus by imaging a subject in which a stent is placed in a blood vessel and a contrast medium is injected. Detection means for detecting data of the stent included in the data; measurement means for measuring the stent data detected by the detection means; and the stent and the blood vessel based on the measurement result measured by the measurement means And a warning image data identifying a region of the three-dimensional image data corresponding to the portion of the stent determined to be abnormal by the determination unit; Warning image data generating means for generating and display means for displaying the warning image data generated by the warning image data generating means are provided.

  The image processing apparatus of the present invention according to claim 5 is obtained from an image diagnostic apparatus by imaging a subject in which a stent is placed in a blood vessel having an opening leading to an aneurysm and a contrast medium is injected. Detection means for detecting the dome data, the blood vessel data, and the stent data, which are the aneurysm data included in the three-dimensional image data, and the dome data and the blood vessel data detected by the detection means. Based on the X-axis passing through the blood vessel vector representing the travel direction of the parent blood vessel data based on the set X-axis, the cross-sectional image data for generating the cross-sectional image data obtained by slicing the three-dimensional image data in a plurality of planes The image forming apparatus includes: a generating unit; and a display unit that displays the cross-sectional image data generated by the cross-sectional image data generating unit.

  Further, the diagnostic imaging apparatus of the present invention according to claim 15 is an imaging means for generating three-dimensional image data by imaging a subject in which a stent is placed in a blood vessel and a contrast agent is injected, and the imaging diagnostic apparatus Based on the measurement results measured by the measurement means, the detection means for detecting the stent data included in the three-dimensional image data, the measurement means for measuring the stent data detected by the detection means, A determination unit that determines whether or not a positional relationship between the stent and the blood vessel is normal; and a region of the three-dimensional image data corresponding to the portion of the stent that is determined to be abnormal by the determination unit Warning image data generating means for generating warning image data, and display means for displaying the warning image data generated by the warning image data generating means It is characterized in.

  Furthermore, in the diagnostic imaging apparatus of the present invention according to claim 16, three-dimensional image data is obtained by imaging a subject in which a stent is placed in a blood vessel having an opening leading to an aneurysm and into which a contrast medium is injected. Imaging means for generating the dome data, blood vessel data, and stent data as the aneurysm data included in the three-dimensional image data generated by the imaging means, and the detection Based on the dome data detected by the means and the blood vessel data, an X axis passing on a blood vessel vector representing a traveling direction of the parent blood vessel data is set, and based on the set X axis, the three-dimensional image data is converted into a plurality of Cross-sectional image data generating means for generating cross-sectional image data sliced by a plane, and display means for displaying the cross-sectional image data generated by the cross-sectional image data generating means Characterized by comprising a.

  According to the present invention, the stent portion included in the three-dimensional image data obtained from the diagnostic imaging apparatus is detected, and the detected stent data is measured, whereby the portion of the stent in which the positional relationship with the blood vessel is abnormal Can be identified.

  Further, aneurysm data, blood vessel data, and stent data included in the image data are detected, one axis is set based on each detected data, and a plurality of the image data is set based on the set one axis. It is possible to generate cross-sectional image data sliced along the plane.

  As described above, the positional relationship between the stent and the parent blood vessel can be easily grasped.

The block diagram which shows the structure of the X-ray diagnostic apparatus which concerns on the Example of this invention. The flowchart which shows operation | movement of the X-ray diagnostic apparatus according to the warning image display operation which concerns on the Example of this invention. The figure which shows an example of 3D contrast image data displayed on the display part which concerns on the Example of this invention. The figure which shows an example of the position of the surface which slices the stent data which concerns on the Example of this invention, and this stent data. The figure which shows an example of the measurement result of the stent cross-section data which concerns on the Example of this invention. The figure which shows an example of the warning image data displayed on the display part which concerns on the Example of this invention. The flowchart which shows operation | movement of the X-ray diagnostic apparatus according to the cross-sectional image display operation which concerns on the Example of this invention. The figure for demonstrating the operation | movement which detects dome data, parent blood vessel data, stent data, and opening part data from 3D contrast image data based on the Example of this invention. The figure which shows an example of the origin set to 3D image data based on the Example of this invention, and an X-axis. The figure which shows the X-axis bent along the running direction of the parent blood vessel data based on the Example of this invention. The figure which shows an example of the several surface sliced in order to produce | generate the 1st cross-section image data based on the Example of this invention. The figure which shows an example of the 1st cross-sectional image data displayed side by side on the display part which concerns on the Example of this invention. The figure which shows an example of the 1st cross-sectional image data displayed in relation with the position of the surface sliced on the display part which concerns on the Example of this invention. The figure which shows an example of the several surface sliced in order to produce | generate the 2nd cross-section image data based on the Example of this invention. The figure which shows an example of the 2nd cross-sectional image data displayed on the display part which concerns on the Example of this invention. The figure which shows an example of the several surface sliced in order to produce | generate the 3rd cross-section image data based on the Example of this invention. The figure which shows an example of the 3rd cross-sectional image data displayed on the display part which concerns on the Example of this invention. The figure which shows the other example of the origin set to 3D image data based on the Example of this invention, and an X-axis.

  An embodiment of an X-ray diagnostic apparatus according to the present invention will be described with reference to the drawings. The X-ray diagnostic apparatus of the present invention includes an image processing unit that processes and displays image data obtained by imaging. Not limited to this, an image diagnostic apparatus such as an X-ray CT apparatus or an IVR-CT apparatus including the image processing unit may be used. Further, the image data obtained from the image diagnostic apparatus may be processed and displayed by an image processing apparatus having the function of the image processing unit.

  Embodiments of the X-ray diagnostic apparatus according to the present invention will be described below with reference to FIGS.

  FIG. 1 is a block diagram showing a configuration of an X-ray diagnostic apparatus according to an embodiment of the present invention. The X-ray diagnostic apparatus 100 inputs various commands and the like, an imaging unit 40 that images the subject P and generates image data, an image processing unit 50 that processes the image data generated by the imaging unit 40, and the like. An operation unit 80 and a system control unit 90 that controls the photographing unit 40 and the image processing unit 50 are provided.

  The imaging unit 40 irradiates the subject P placed on the top 18 with X-rays for irradiating X-rays for imaging and X-ray detection for detecting X-rays transmitted through the subject P. Unit 14, C-arm 19 that holds X-ray irradiation unit 10 and X-ray detection unit 14, mechanism unit 20 that moves top plate 18 and C-arm 19, and high voltage that drives X-ray irradiation unit 10 to be irradiated Unit 30 and an image data generation unit 35 that generates image data based on the detection result of the X-ray detection unit 14.

  The X-ray irradiation unit 10 is disposed between the X-ray tube 11 that generates X-rays by driving the high voltage unit 30, and the X-ray tube 11 that is disposed between the X-ray tube 11 and the subject P and irradiates the subject P. And an X-ray diaphragm 12 for limiting the X-ray irradiation range. The subject P placed on the top 18 is irradiated with X-rays.

  The X-ray detector 14 is disposed opposite to the X-ray irradiator 10, detects an X-ray transmitted through the subject P, and converts it into an electric charge, and is converted by the X-ray detector 15. And a signal processing unit 16 that reads out the generated charges and generates X-ray projection data.

  The X-ray detector 15 is, for example, a direct conversion system that converts X-rays directly into electric charges, and includes a plurality of detection elements arranged in two dimensions in the column direction and the line direction that convert incident X-rays into electric charges and store them. And a gate driver for supplying a driving pulse for reading out the electric charge accumulated in the detecting element. Then, the read charge is output to the signal processing unit 16. In addition, you may make it implement using the indirect conversion system which converts an X-ray into light, and converts it into an electric charge.

  The signal processing unit 16 includes an amplifier that converts the electric charge read from the detection element of the X-ray detector 15 into a voltage, an amplifier that amplifies the voltage, and an A / D converter that converts the output of the amplifier into a digital signal. And a parallel-serial converter that converts the signal from the A / D converter into a time-series signal and generates X-ray projection data. Then, the generated X-ray projection data is output to the image data generation unit 35.

  The mechanism unit 20 is a positioning unit that positions the relative positions of the X-ray irradiation unit 10 and the X-ray detection unit 14 with respect to the subject P in order to perform imaging. The top plate 18 is moved in the longitudinal direction, the width direction, and the vertical direction. The table top moving mechanism 21 for positioning the X-ray irradiation unit 10 and the X-ray detection unit 14 with respect to the subject P by moving in the respective directions and the C-arm 19 are rotated to irradiate the subject P with X-rays. The arm movement mechanism 22 for setting and positioning the angle of the unit 10 and the X-ray detection unit 14, and the mechanism control unit 23 for controlling the top plate movement mechanism 21 and the arm movement mechanism 22 are provided. Then, the top plate 18 and the C arm 19 are moved based on the position information input by the positioning operation from the operation unit 80.

  The high voltage unit 30 includes a high voltage generation unit 31 that drives the X-ray tube 11 of the X-ray irradiation unit 10 to generate X-rays, and an X-ray control unit 32 that controls the high voltage generation unit 31. ing. Then, the X-ray control unit 32 generates a high voltage so that the X-ray tube 11 is driven to radiate based on the irradiation conditions such as the tube voltage, tube current, pulse width, and pulse rate supplied from the system control unit 90. The unit 31 is controlled. Then, X-rays are continuously emitted from the X-ray tube 11. Moreover, it irradiates intermittently according to a pulse rate.

  The image data generation unit 35 generates two-dimensional image data or three-dimensional image data based on the X-ray projection data output from the signal processing unit 16 of the X-ray detection unit 14, and the generated image data is converted into an image. The data is output to the processing unit 50.

  Here, for example, by treating a cerebral aneurysm, after the contrast medium is injected into the blood vessel of the subject P in which the stent is placed in the parent blood vessel having an opening leading to the aneurysm, the position of the stent is confirmed. In order to do this, X-ray imaging is performed. Then, X-ray imaging from a plurality of angles by the X-ray irradiation unit 10 and the X-ray detection unit 14 generates contrast image data as a plurality of two-dimensional image data, and reconstructs the generated plurality of contrast image data Thus, 3D contrast image data, which is three-dimensional image data in which the blood vessel portion of the subject P is contrasted, is generated.

  By the way, the stent is a highly flexible biocompatible material such as gold or platinum that covers the surface of the base material having a flexible structure in which a large number of holes penetrating between the inner peripheral surface and the outer peripheral surface are formed. It is comprised with a radiopaque material. As a result, the stent can be identified from the image data that conforms to the shape of the blood vessel and is generated by imaging. In addition, you may make it use the stent which has the stent marker which described the both ends of the said base material with the radiopaque material.

  The image processing unit 50 processes the 3D contrast image data generated by the image data generation unit 35 of the imaging unit 40 and displays a warning for a portion where the position of the stent in which the subject P is placed is abnormal with respect to the parent blood vessel. To process the 3D contrast image data generated by the first processing unit 51 that generates warning image data and the image data generation unit 35 of the imaging unit 40 to generate slice image data sliced on a plurality of surfaces A second processing unit 52 and a display unit 53 that displays the warning image data generated by the first processing unit 51 and the cross-sectional image data generated by the second processing unit 52 are provided.

  The first processing unit 51 includes a first detection unit 511 that detects stent data included in 3D contrast image data, a measurement unit 512 that measures stent data detected by the first detection unit 511, and a measurement. A determination unit 513 that determines whether the positional relationship between the stent and the parent blood vessel is normal based on the measurement result measured by the unit 512; and a portion of the stent that is determined to be abnormal by the determination unit 513 And a warning image data generation unit 514 that generates warning image data in which a corresponding 3D contrast image data area is identified and processed with a warning color.

  The second processing unit 52 includes a second detection unit 521 that detects aneurysm data, parent vessel data, stent data, and opening data included in the 3D contrast image data, and a second detection unit The X-axis is set based on each data detected in 521, and a cross-sectional image data generating unit 522 that generates cross-sectional image data obtained by slicing 3D contrast image data based on the set X-axis.

  The cross-sectional image data generation unit 522 generates first cross-sectional image data composed of a plurality of cross-sectional image data sliced by a plurality of planes perpendicular to the X axis. Further, second cross-sectional image data configured by a plurality of cross-sectional image data sliced by a plurality of planes parallel to the X axis is generated. Further, third cross-sectional image data constituted by a plurality of cross-sectional image data sliced by planes including the X-axis at a plurality of angles rotated around the X-axis is generated.

  The display unit 53 includes a CRT, a liquid crystal panel, and the like, 3D contrast image data generated by the image data generation unit 35 of the imaging unit 40, and warning image data generated by the warning image data generation unit 514 of the first processing unit 51. Each of the cross-sectional image data of the first cross-sectional image data, the second cross-sectional image data, and the third cross-sectional image data generated by the cross-sectional image data generating unit 522 of the second processing unit 52 is displayed.

  The operation unit 80 includes an input device such as a keyboard and a mouse, and sets object information such as a name and an ID number for identifying the object P, a position where the X-ray irradiation unit 10 and the X-ray detection unit 14 are positioned, and the like. An input operation for setting an X-ray irradiation condition, an input operation for setting and selecting various conditions related to display, and the like are performed.

  The system control unit 90 includes a CPU and a storage circuit, and once stores information input from the operation unit 80, based on the input information, the X-ray irradiation unit 10, the X-ray detection unit 14, Control of the mechanism unit 20, the high voltage unit 30, the image data generation unit 35, the second first processing unit 51 and the second processing unit 52 of the image processing unit 50, and control of the entire system are performed.

  Hereinafter, with reference to FIG. 1 to FIG. 18, an operation for displaying image data for confirming the position of the stent placed in the parent blood vessel of the subject P, and the X-ray diagnostic apparatus 100 according to this operation. An example of the operation will be described.

  First, an operation of the X-ray diagnostic apparatus 100 according to a warning display operation for displaying warning image data will be described with reference to FIGS. FIG. 2 is a flowchart showing the operation of the X-ray diagnostic apparatus 100 according to the warning display operation. FIG. 3 is a diagram illustrating an example of 3D contrast image data displayed on the display unit 53. FIG. 4 is a diagram illustrating an example of the stent data and the position of the surface that slices the stent data. FIG. 5 is a diagram illustrating an example of a measurement result of stent cross-sectional data. FIG. 6 is a diagram illustrating an example of warning image data displayed on the display unit 53.

  When an input operation for setting position information for positioning the relative positions of the X-ray irradiation unit 10 and the X-ray detection unit 14 with respect to the subject P, an X-ray irradiation condition, and the like is performed from the operation unit 80, system control is performed. The storage circuit of the unit 90 stores input information such as position information and irradiation conditions. Then, after the contrast medium is injected into the blood vessel of the subject P, when an operation for starting X-ray imaging for displaying warning image data is performed from the operation unit 80, the X-ray diagnostic apparatus 100 starts operation. (Step S1).

  Based on input information from the operation unit 80, the system control unit 90 includes an X-ray irradiation unit 10, an X-ray detection unit 14, a mechanism unit 20, a high voltage unit 30, an image data generation unit 35, and an image data generation unit 35. The first processing unit 51 and the display unit 53 of the image processing unit 50 are instructed to display X-ray imaging and warning image data.

  The mechanism control unit 23 of the mechanism unit 20 controls the top plate moving mechanism 21 and the arm moving mechanism 22 based on the position information supplied from the system control unit 90. Further, the X-ray control unit 32 of the high voltage unit 30 controls the high voltage generation unit 31 that irradiates the X-rays from the X-ray irradiation unit 10 based on the irradiation conditions supplied from the system control unit 90.

  The arm moving mechanism 22 of the mechanism unit 20 rotates the C arm 19 within a predetermined angle range. The high voltage generator 31 irradiates and drives the X-ray irradiation unit 10 according to the rotation of the C arm 19. The X-ray irradiation unit 10 irradiates the subject P placed on the top 18 with X-rays while rotating. The X-ray detection unit 14 detects X-rays transmitted through the subject P and generates X-ray projection data.

  The image data generator 35 generates a plurality of contrast image data based on the X-ray projection data generated by the X-ray detector 14. Next, the generated plurality of contrast image data is reconstructed to generate 3D contrast image data, and the generated 3D contrast image data is displayed on the display unit 53 (step S2).

  FIG. 3 is a diagram illustrating an example of 3D contrast image data displayed on the display unit 53. The 3D contrast image data 60 includes dome data 61 corresponding to the aneurysm of the subject P and parent blood vessel data 62 corresponding to the parent blood vessel of the aneurysm.

  Here, when an operation for designating the cross-sectional position of the parent blood vessel data 62 in the vicinity of the dome data 61 is performed from the operation unit 80 in order to detect the data of the stent placed in the parent blood vessel, the first processing unit 51. Generates the blood vessel cross-sectional data sliced perpendicularly to the traveling direction of the parent blood vessel data 62 at the designated position and displays it on the display unit 53.

  Next, when an operation for designating part of the stent data included in the blood vessel cross-sectional data displayed on the display unit 53 is performed from the operation unit 80, the first detection unit 511 performs, for example, a region growth method in FIG. As shown in FIG. 2, stent data 63, which is data of a region adjacent to a pixel at a designated position and sequentially extracted pixels having the same pixel value as the pixel value of the pixel or a predetermined range, is detected (FIG. 2). Step S3).

  After detecting the stent data 63, the first detection unit 511 performs stent cross-section data that is two-dimensional data representing one end surface and the other end surface in the traveling direction of the parent blood vessel data 62 of the stent data 63, as shown in FIG. (N-2) stent cross-section data obtained by slicing S1 and Sn and the stent data 63 into a plurality of planes F1 to (n-2) equally divided by (n-1) perpendicularly with respect to the traveling direction. S2 to S (n-1) are generated (step S4 in FIG. 2).

  The measuring unit 512 measures the inflection point of the closed curve extracted by tracing the stent cross-section data S1 to Sn generated by the first detecting unit 511 (step S5 in FIG. 2).

  Based on the measurement result measured by the measurement unit 512, the determination unit 513 determines whether the positional relationship between the stent portion corresponding to each of the stent cross-section data S1 to Sn and the parent blood vessel is normal. If there are four inflection points in each of the stent cross-section data S1 to Sn (Yes in step S6 in FIG. 2), the extracted closed curve is circular or elliptical, so that it corresponds to the stent cross-section data. It determines with the shape of the stent part to perform is normal, and transfers to step S7.

  Further, when there are five or more inflection points of each of the stent cross-section data S1 to Sn (No in step S6 in FIG. 2), the shape of the extracted closed curve is a shape other than a circle or an ellipse. Since there is a high possibility that the stent portion corresponding to the cross-sectional data is deformed and separated from the parent blood vessel, it is determined that the positional relationship between the stent portion and the parent blood vessel is abnormal, and the process proceeds to step S9.

  After “Yes” in step S 6, the measurement unit 512 performs, for example, a closed curve of each of the stent cross-section data S 1 to Sn corresponding to the stent portion whose shape is determined to be normal by the determination unit 513 as shown in FIG. Each area A1 to An of the region indicated by the hatched area is measured (step S7 in FIG. 2).

  After step S7, based on the areas A1 to An measured by the measurement unit 512, the determination unit 513 determines whether the positional relationship between the stent portion corresponding to the stent cross-section data having the area and the parent vessel is normal. Determine whether or not. When each of the areas A1 to An is out of the preset allowable range (No in step S8 in FIG. 2), the stent portion corresponding to the stent cross-sectional data having the area is reduced and separated from the parent blood vessel. Therefore, it is determined that the positional relationship between the stent portion and the parent blood vessel is abnormal, and the process proceeds to step S9.

  If each area A1 to An is within the allowable range (Yes in step S8 in FIG. 2), it is determined that the stent portion corresponding to the stent cross-sectional data having the area is inscribed in the parent vessel. It is determined that the positional relationship between the stent portion and the parent blood vessel is normal, and the process proceeds to step S10.

  After “No” in Step S6 or “No” in Step S8, the warning image data generation unit 514 has parent blood vessel data corresponding to the outer periphery of the stent cross-section data corresponding to the stent portion determined to be abnormal by the determination unit 513. Warning image data that has been identified and processed with a warning color is generated to display the area 62 as a warning. Then, the generated warning image data is displayed on the display unit 53 (step S9 in FIG. 2).

  FIG. 6 is a diagram illustrating an example of warning image data displayed on the display unit 53. The warning image data 60a is different from the 3D contrast image data 60 shown in FIG. 3 in that a part of the parent blood vessel data 62 included in the 3D contrast image data 60 is shaded according to one color or the reduction amount of the stent. The parent blood vessel data 62a identified and displayed with the attached warning color 64 is replaced. Here, for example, the region corresponding to the outer periphery of the stent cross-section data S (np) to Sn {1 <p <n} shown in FIG. Has been.

  As described above, when the positional relationship between the parent blood vessel and the stent is abnormal, the warning image data 60a indicating the abnormality can be displayed on the display unit 53. Thereby, it is possible to grasp the region of the stent portion where the positional relationship with the blood vessel is abnormal.

  After “Yes” in step S8, the determination unit 513 indicates that the positional relationship between the parent blood vessel and the stent is normal when each of the areas A1 to An is within the allowable range, for example, “no abnormality” or the like. Is displayed on the display unit 53 (step S10).

  As described above, when the positional relationship between the parent blood vessel and the stent is normal, a message indicating normality can be displayed on the display unit 53. Thereby, it can be grasped that the positional relationship between the parent blood vessel and the stent is normal.

  After step S9 or step S10, the confirmation of the positional relationship between the parent blood vessel and the stent is completed by observing the warning image data 60a displayed on the display unit 53 or confirming the message. When an operation for ending the display of the warning image data is performed from the operation unit 80, the system control unit 90 instructs the image processing unit 50 to end the display, whereby the X-ray diagnostic apparatus 100 ends the operation (step) S11).

  Next, a cross-sectional image operation for displaying cross-sectional image data and an operation of the X-ray diagnostic apparatus 100 according to this operation will be described.

  FIG. 7 is a flowchart showing the operation of the X-ray diagnostic apparatus 100 according to the cross-sectional image display operation. When an input operation for setting position information, irradiation conditions, and the like is performed from the operation unit 80, input information such as position information and irradiation conditions is stored in the storage circuit of the system control unit 90. Then, after the contrast medium is injected into the blood vessel of the subject P, when an operation for starting X-ray imaging for displaying cross-sectional image data is performed from the operation unit 80, the X-ray diagnostic apparatus 100 starts operation. (Step S21).

  Based on the input information from the operation unit 80, the system control unit 90 instructs the imaging unit 40 and the second processing unit 52 and the display unit 53 of the image processing unit 50 to perform X-ray imaging and display of cross-sectional image data. The imaging unit 40 generates, for example, the 3D contrast image data 60 illustrated in FIG. 3 and displays the generated 3D contrast image data 60 on the display unit 53 (step S22).

  Specify the vicinity of the center of the dome data 61 and the vicinity of one end and the other end of the parent vessel data 62 in order to detect aneurysm neck data, parent vessel data, and stent data placed in the parent vessel. When the operation to be performed is performed from the operation unit 80, the second detection unit 521 detects the dome data 61 from the pixel at the point 611 in the vicinity of the designated center as shown in FIG. Step S23).

  Further, the parent blood vessel data 62 between the designated point 621 near one end and the point 622 near the other end is detected (step S24).

  Further, the stent data 63 is detected between the points 621 and 622 of the detected parent blood vessel data 62 (step S25).

  Then, the center of the detected dome data 61 is obtained, a perpendicular perpendicular to the center line 623 of the parent blood vessel data 62 is extended from the obtained center 612, and the parent blood vessel including the point 651 where the extended perpendicular and the parent blood vessel data 62 intersect is included. Opening data 65 corresponding to the opening is detected (step S26).

  When a stent having a stent marker is used, after detecting the dome data 61, the stent marker is detected by tracing from the center 612 of the dome data 61, and parent vessel data is detected between the detected stent markers. You may carry out like this.

  After detecting each data from the 3D contrast image data 60, the cross-sectional image data generation unit 522 uses the dome data 61 and the parent vessel data 62 detected by the second detection unit 521, based on the dome data 61 and the parent vessel data 62. 62 and the origin and the X axis passing through the origin are set in the 3D image data 70 constituted by the stent data 63.

  FIG. 9 is a diagram illustrating an example of the origin and the X axis set in the 3D image data 70. The cross-sectional image data generation unit 522 extends a perpendicular perpendicular to the center line 623 of the parent blood vessel data 62 from the center 612 of the dome data 61 in the 3D image data 70 and sets the point where the extended perpendicular intersects the center line 623 as the origin 624. (Step S27).

  After setting the origin 624, the cross-sectional image data generation unit 522 sets the X axis that passes through the origin 624. Here, for example, the X axis is set on the parent blood vessel vector in which the center line 623 of the parent blood vessel data 62 is represented by one vector passing through the origin 624 (step S28 in FIG. 7). As shown in FIG. 10, the curved parent blood vessel data 62b may be set so as to set an X axis that is bent along the traveling direction of the parent blood vessel data 62b.

  A straight line that is orthogonal to the X axis at the origin 624 and passes through the center 612 is defined as a Z axis, and a Y axis that is orthogonal to the X axis and the Z axis.

  Thus, by detecting the dome data 61 and the parent blood vessel data 62 from the 3D contrast image data 60, the X axis for generating the cross-sectional image data can be easily set.

  After setting the X-axis, the cross-sectional image data generation unit 522 displays “slice development direction”, “slice interval”, “region of interest”, and “display” as drawing conditions for generating preset cross-sectional image data. Based on the “method”, the cross-sectional image data is generated from the 3D image data 70, and the generated cross-sectional image data is displayed on the display unit 53.

  The “slice development direction” includes “circular cutting of the parent blood vessel vector”, “cutting a strip parallel to the parent blood vessel vector”, and “rotation angle cutting around the parent blood vessel vector”. When “circular cut of parent blood vessel vector” is set, first cross-sectional image data is generated. If “strip cutting parallel to the parent vessel vector” is set, second cross-sectional image data is generated. Furthermore, when “rotation angle cut around the parent blood vessel vector” is set, third cross-sectional image data is generated.

  In addition, in the “slice interval”, if the interval of slicing is set for the “circular cut of the parent vessel vector” and the “strip cut parallel to the parent vessel vector” in the “slice development direction”, the interval of the set distance is set. Slice into equally divided planes. In addition, when the interval for slicing is set with respect to the “rotation angle cut around the parent blood vessel vector”, the slice is divided into planes equally divided by the set angle interval.

  Further, the “region of interest” includes regions such as “region of opening”, “region where parent blood vessel is bent greatly”, and “region of end of stent”. When any region is set, the set region is sliced at an interval narrower than the interval set by the “slice interval”.

  Furthermore, the “display method” includes “line display”, “link display”, and “moving image display”. Then, when “display side by side” is set, a plurality of slice image data in each of the first to third slice image data is arranged and displayed on the display unit 53. When “link display” is set, a plurality of slice image data in each of the first to third slice image data is displayed on the display unit 53 in association with the position of the sliced surface of the 3D image data 70. Furthermore, when “moving image display” is set, the cross-sectional image data of the adjacent intervals of the plurality of cross-sectional image data in each of the first to third cross-sectional image data is displayed on the display unit 53 in order in time series.

  In this case, for example, “circular cutting of parent blood vessel vector”, a predetermined distance, and “line-up display” are set as rendering conditions. Then, as shown in FIG. 11, slice image data is generated by slicing the 3D image data 70 along a plurality of planes perpendicular to the X axis. For example, the cross-sectional image data Dx1 sliced by the plane Fx1 passing through one end of the stent data 63 is generated, and the range of one end and the other end of the stent data 63 is divided into (n-1) equal intervals (n-1) to the planes Fx2 to Fx2. Generate (n-2) slice image data Dx2 to Dx (n-1) sliced by Fx (n-1), and further generate slice image data Dxn sliced by a plane Fxn passing through the other end of the stent data 63. To do. Then, the first slice image data constituted by the generated plurality of slice image data Dx1 to Dxn is displayed side by side on the display unit 53 (step S29 in FIG. 7).

  FIG. 12 is a diagram illustrating an example of first cross-sectional image data displayed side by side on the display unit 53. The first slice image data 71 is displayed side by side, for example, and is composed of the slice image data Dx1 to Dxn. Each of the cross-sectional image data Dx1 to Dxn includes data including at least two cross-sectional data among the cross-sectional data of the dome data 61, the cross-sectional data of the parent blood vessel data 62, and the cross-sectional data of the stent data 63. Note that a plurality of cross-sectional image data Dx1 to Dxn may be displayed side by side.

  The cross-sectional image data Dx1 is composed of the stent cross-sectional data S1 shown in FIG. 5 and the blood vessel cross-sectional data Bx1 surrounded by the data. The cross-sectional image data Dx2 is the stent cross-sectional data S2 and the blood vessel cross-sectional data Bx2 surrounded by the data. Consists of.

  Here, it can be observed that the stent is inscribed in the parent vessel. This shows that the positional relationship between one end of the stent and the parent blood vessel is normal.

  The cross-sectional image data Dxq is cross-sectional data sliced by a plane Fxq passing through the origin 624, and is a part of the outer periphery of the stent cross-sectional data Sq, the blood vessel cross-sectional data Bxq surrounded by this data, and the stent cross-sectional data Sq. Consists of connected dome cross-section data Lxq.

  The boundary surface between the stent cross-section data Sq and the dome cross-section data Lxq corresponds to the opening section data Oxq which is the section data of the opening section data. Further, there is no region of the blood vessel cross-sectional data Bxq between the vicinity of the neck data Nxq corresponding to the neck of the boundary between the parent blood vessel and the aneurysm forming the parent blood vessel opening and the stent cross-sectional data Sys.

  Here it can be observed that the stent is inscribed in the neck of the parent vessel. Thereby, it can be seen that the positional relationship between the portion near the neck of the stent and the neck of the parent vessel is normal.

  Further, the cross-sectional image data Dx (np) is composed of the stent cross-sectional data S (np) and the blood vessel cross-sectional data Bx (np) surrounded by this data except for a part thereof, and the cross-sectional image data Dn. Is constituted by stent cross-section data Sn and blood vessel cross-section data Bxn surrounded by this data excluding an area larger than the part.

  Here, it can be observed that a part of the other end portion of the stent is separated from the parent blood vessel. Thereby, it turns out that the positional relationship of the other end part of a stent and a parent blood vessel is abnormal.

  If “moving image display” is set, the cross-sectional image data Dx1 to Dxn are displayed on the display unit 53 in time series, for example, one by one from the cross-sectional image data Dx1. Further, when “display with string” is set, 3D image data 70 indicating the positions of the planes Fx1 to Fxn in FIG. 11 and the cross-sectional image data Dx1 to Dxn in FIG. 12 are combined, as shown in FIG. The respective planes Fx1 to Fxn of the 3D image data 70 and the respective sectional image data Dx1 to Dxn corresponding to the planes are connected by, for example, lines and displayed on the display unit 53.

  In this way, a plurality of cross-sectional image data Dx1 to Dxn obtained by slicing the 3D image data 70 with a plurality of planes Fx1 to Fxn perpendicular to the X axis can be displayed on the display unit 53. As a result, it is possible to easily observe whether all the outer peripheral surfaces other than the surface in contact with the aneurysm of the stent are inscribed in the parent blood vessel, and the positional relationship between the stent and the parent blood vessel can be easily grasped. can do.

  Here, when “strips parallel to the parent vessel vector” is set as the drawing condition, as shown in FIG. 14, the 3D image data 70 is converted into a plane Fys that is a plane including, for example, the X axis and the center 624, and A second cross-sectional image composed of cross-sectional image data Dyr, Dys, Dyt, etc. by slicing with planes Fyr, Fyt, etc., which are parallel to the plane Fys passing through one side of the origin 624 and the other side of the origin 624 Generate data. Then, the generated second slice image data is displayed on the display unit 53.

  FIG. 15 is a diagram illustrating an example of second cross-sectional image data displayed on the display unit 53. The second slice image data 72 is composed of a plurality of slice image data Dyr, Dys, Dyt, and the like.

  The cross-sectional image data Dyr includes blood vessel cross-sectional data Byr, stent cross-sectional data Syr located near the upper end and lower end of the blood vessel cross-sectional data Byr, and dome cross-sectional data Lyr located away from the blood vessel cross-sectional data Byr.

  The stent cross-section data Syr near the upper end of the blood vessel cross-section data Byr has one end located at the upper end of the blood vessel cross-section data Byr and the other end separated from the upper end of the blood vessel cross-section data Byr. This separated area corresponds to the area of the stent data 63 identified by the warning color 64 in the warning image data 60a of FIG.

  Here, it can be observed that a part of one end of the stent is inscribed in the parent blood vessel and a part of the other end is separated from the parent blood vessel.

  The cross-sectional image data Dys includes blood vessel cross-sectional data Bys, stent cross-sectional data Sys located near the upper end and lower end of the blood vessel cross-sectional data Bys, and dome cross-sectional data Lys coupled to the blood vessel cross-sectional data Bys.

  A boundary surface between the stent cross-section data Sys near the upper end of the blood vessel cross-section data Bys and the dome cross-section data Lys corresponds to the opening cross-section data Oys. The stent cross-section data Sys near the upper end of the blood vessel cross-section data Bys has one end located at the upper end of the blood vessel cross-section data Bys and the other end spaced from the upper end of the blood vessel cross-section data Bys. This separated area corresponds to the area of the stent data 63 identified by the warning color 64 in the warning image data 60a. Further, there is no region of the blood vessel cross-section data Bys between the vicinity of the neck data Nys corresponding to the neck of the boundary between the parent blood vessel and the aneurysm forming the opening of the parent blood vessel and the stent cross-sectional data Sys.

  Here, it can be observed that a part of one end of the stent is inscribed in the parent blood vessel and a part of the other end is separated from the parent blood vessel. Further, it can be observed that a part of the stent is inscribed in a part of the neck of the parent blood vessel.

  The cross-sectional image data Dyt includes blood vessel cross-sectional data Byt, stent cross-sectional data Syt located near the upper end and lower end of the blood vessel cross-sectional data Byt, and dome cross-sectional data Lyt that is located apart from the blood vessel cross-sectional data Byt.

  The stent cross-section data Syt near the upper end of the blood vessel cross-section data Byt has one end located at the upper end of the blood vessel cross-section data Byt and the other end spaced from the upper end of the blood vessel cross-section data Byt. This separated area corresponds to the area of the stent data 63 identified by the warning color 64 in the warning image data 60a.

  Here, it can be observed that a part of one end of the stent is inscribed in the parent blood vessel and a part of the other end is separated from the parent blood vessel.

  As described above, a plurality of cross-sectional image data Dyr, Dys, Dyt, and the like obtained by slicing the 3D image data 70 with a plurality of planes Fyr, Fys, Fyt, etc. parallel to the X axis can be displayed on the display unit 53. This makes it possible to observe whether all the outer peripheral surfaces of the stent other than the surface in contact with the aneurysm are inscribed in the parent blood vessel, and easily grasp the positional relationship between the stent and the parent blood vessel. Can do.

  Next, when “rotation angle cut around parent blood vessel vector” is set as a drawing condition, 3D image data 70 is rotated around a plane including the X axis around the X axis as shown in FIG. A plurality of surfaces at a plurality of angles, for example, a surface Fθ1 including the X axis and the point 612, a surface Fθu obtained by rotating the surface Fθ1 in one direction by an angle θu, and a surface Fθ1 in one direction by an angle θv (θu <θv <90 °) By slicing with the rotated surface Fθv or the like, third cross-sectional image data composed of a plurality of cross-sectional image data Dθ1, Dθu, Dθv and the like is generated. Then, the generated third slice image data is displayed on the display unit 53.

  FIG. 17 is a diagram illustrating an example of third cross-sectional image data displayed on the display unit 53. The third slice image data 73 is composed of a plurality of slice image data Dθ1, Dθu, Dθv, and the like.

  The cross-sectional image data Dθ1 is configured in the same manner as the cross-sectional image data Dys in FIG. 15, and is combined with the blood vessel cross-sectional data Bθ1, the stent cross-sectional data Sθ1 located near the upper end and the lower end of the blood vessel cross-sectional data Bθ1, and the blood vessel cross-sectional data Bθ1. Dome section data Lθ1.

  The boundary surface between the stent cross-sectional data Sθ1 and the dome cross-sectional data Lθ1 in the vicinity of the upper end of the blood vessel cross-sectional data Bθ1 corresponds to the opening cross-sectional data Oθ1. Further, in the stent cross-section data Sθ1 in the vicinity of the upper end of the blood vessel cross-section data Bθ1, one end is located at the upper end of the blood vessel cross-section data Bθ1, and the other end is separated from the upper end of the blood vessel cross-section data Bθ1. This separated area corresponds to the area of the stent data 63 identified by the warning color 64 in the warning image data 60a. Further, there is no region of the blood vessel cross-sectional data Bθ1 between the vicinity of the neck data Nθ1 corresponding to the neck of the boundary between the parent blood vessel and the aneurysm forming the opening of the parent blood vessel and the stent cross-sectional data Sθ1.

  Here, it can be observed that a part of one end of the stent is inscribed in the parent blood vessel and a part of the other end is separated from the parent blood vessel. Further, it can be observed that a part of the stent is inscribed in a part of the neck of the parent blood vessel.

  The cross-sectional image data Dθu is composed of blood vessel cross-sectional data Bθu, stent cross-sectional data Sθu located near the upper and lower ends of the blood vessel cross-sectional data Bθu, and dome cross-sectional data Lθu coupled to the blood vessel cross-sectional data Bθu.

  The boundary surface between the stent cross-sectional data Sθu and the dome cross-sectional data Lθu in the vicinity of the upper end of the blood vessel cross-sectional data Bθu corresponds to the opening cross-sectional data Oθu. Further, the stent cross-section data Sθu in the vicinity of the upper end of the blood vessel cross-section data Bθu has one end located at the upper end of the blood vessel cross-section data Bθu and the other end separated from the upper end of the blood vessel cross-section data Bθu. This separated area corresponds to the area of the stent data 63 identified by the warning color 64 in the warning image data 60a. Further, there is no region of the blood vessel cross-sectional data Bθ1 between the vicinity of the neck data Nθu corresponding to the neck of the boundary between the parent blood vessel and the aneurysm forming the opening of the parent blood vessel and the stent cross-sectional data Sθu.

  Here, it can be observed that a part of one end of the stent is inscribed in the parent blood vessel and a part of the other end is separated from the parent blood vessel. Further, it can be observed that a part of the stent is inscribed in a part of the neck of the parent blood vessel.

  The cross-sectional image data Dθv includes blood vessel cross-sectional data Bθv and stent cross-sectional data Sθv located near the upper end and the lower end of the blood vessel cross-sectional data Bθv. The stent cross-section data Sθv in the vicinity of the upper end of the vascular cross-section data Bθv has one end located at the upper end of the vascular cross-section data Bθv and the other end separated from the upper end of the vascular cross-section data Bθu. This separated area corresponds to the area of the stent data 63 identified by the warning color 64 in the warning image data 60a. Further, the stent cross-section data Sθv at the lower end is located at the lower end of the blood vessel cross-section data Bθv over the entire area.

  Here, it can be observed that a part of one end of the stent is inscribed in the parent blood vessel and a part of the other end is separated from the parent blood vessel.

  As described above, a plurality of cross-sectional image data Dθ1, Dθu, Dv, and the like obtained by slicing the 3D image data 70 with a plurality of surfaces θ1, θu, θv rotated about the X axis can be displayed on the display unit 53. As a result, it becomes possible to observe whether all the outer peripheral surfaces other than the surface in contact with the aneurysm of the stent are inscribed in the parent blood vessel, and the positional relationship between the stent and the parent blood vessel can be easily grasped. Can do.

  After step S29, when the cross-sectional image data displayed on the display unit 53 is observed to confirm the positional relationship between the parent blood vessel and the stent, and the operation unit 80 ends the display of the cross-sectional image data, When the system control unit 90 instructs the image processing unit 50 to end the display, the X-ray diagnostic apparatus 100 ends the operation (step S30 in FIG. 7).

  In step S28, as shown in FIG. 18, a point that is the center of the opening data 65 in the 3D image data 70 is set as the origin 651, and X is displayed on the plane data that represents the origin 651 and the opening data 65 as a plane. An axis may be provided, and the first to third cross-sectional image data may be generated based on the provided X axis. Further, an X axis may be provided on the curvature vector at the center 641 representing the neck data 64 as a curved surface, and the first to third cross-sectional image data may be generated based on the provided X axis.

  According to the embodiment of the present invention described above, the positional relationship between the stent and the parent vessel is normal by detecting the stent data 63 included in the 3D contrast image data 60 and measuring the detected stent data 63. It can be determined whether or not. When the positional relationship between the parent blood vessel and the stent is abnormal, warning image data 60a indicating the abnormality can be displayed on the display unit 53. Thereby, it is possible to grasp the region of the stent portion where the positional relationship with the blood vessel is abnormal. Further, when the positional relationship between the parent blood vessel and the stent is normal, a message indicating that it is normal can be displayed on the display unit 53. Thereby, it can be grasped that the positional relationship between the parent blood vessel and the stent is normal.

  Further, the dome data 61, the parent blood vessel data 62, and the stent data 63 included in the 3D contrast image data 60 can be detected, and the X axis can be set based on the detected dome data 61 and the parent blood vessel data 62. Next, cross-sectional image data obtained by slicing 3D image data 70 composed of the dome data 61, the parent blood vessel data 62, and the stent data 63 in a plurality of planes based on the set X-axis can be generated.

  Then, first cross-sectional image data 71 composed of a plurality of cross-sectional image data Dx1 to Dxn obtained by slicing the 3D image data 70 with a plurality of planes Fx1 to Fxn perpendicular to the X-axis is generated, and the generated first The cross-sectional image data 71 can be displayed on the display unit 53. Thereby, it can be observed whether all the outer peripheral surfaces other than the surface in contact with the aneurysm of the stent are inscribed in the parent blood vessel.

  Further, second cross-sectional image data 72 composed of a plurality of cross-sectional image data Dyr, Dys, Dyt, etc. obtained by slicing the 3D image data 70 with a plurality of planes Fyr, Fys, Fyt, etc. parallel to the X axis is generated. Then, the generated second cross-sectional image data 72 can be displayed on the display unit 53. Thereby, it can be observed whether all the outer peripheral surfaces other than the surface in contact with the aneurysm of the stent are inscribed in the parent blood vessel.

  Further, a third cross-sectional image constituted by a plurality of cross-sectional image data Dθ1, Dθu, Dθv, and the like obtained by slicing the 3D image data 70 by planes Fθ1, Fθu, Fθv, etc. at a plurality of angles rotated about the X axis. Data 73 can be generated, and the generated third slice image data 73 can be displayed on the display unit 53. Thereby, it can be observed whether all the outer peripheral surfaces other than the surface in contact with the aneurysm of the stent are inscribed in the parent blood vessel.

  As described above, the positional relationship between the stent and the parent blood vessel can be easily grasped. And the working time for confirming the position of the stent placed in the parent vessel of the subject P can be shortened.

P Subject 10 X-ray irradiation unit 11 X-ray tube 12 X-ray restrictor 14 X-ray detection unit 15 X-ray detector 16 Signal processing unit 18 Top plate 19 C arm 20 Mechanism unit 21 Top plate moving mechanism 22 Arm moving mechanism 23 Mechanism control unit 30 High voltage unit 31 High voltage generation unit 32 X-ray control unit 35 Image data generation unit 40 Imaging unit 50 Image processing unit 51 First processing unit 52 Second processing unit 53 Display unit 80 Operation unit 90 System control Unit 100 X-ray diagnostic apparatus 511 first detection unit 512 measurement unit 513 determination unit 514 warning image data generation unit 521 second detection unit 522 cross-sectional image data generation unit

Claims (16)

Detecting means for detecting the stent data included in the three-dimensional image data obtained from the image diagnostic apparatus by imaging a subject in which a stent is placed in a blood vessel and in which a contrast medium is injected;
Measuring means for measuring the stent data detected by the detecting means;
Determination means for determining whether the positional relationship between the stent and the blood vessel is normal based on the measurement result measured by the measurement means;
Warning image data generating means for generating warning image data identifying an area of the three-dimensional image data corresponding to the portion of the stent determined to be abnormal by the determination means;
An image processing apparatus comprising: display means for displaying warning image data generated by the warning image data generation means. The measuring unit measures an inflection point of a closed curve extracted by tracing cross-sectional data obtained by slicing the stent data detected by the detecting unit with a plurality of planes perpendicular to the traveling direction of the blood vessel data. And
The determination means determines that the shape of the stent portion corresponding to the cross-section data is normal when the cross-section data measured by the measurement means has four inflection points, and the cross-section data inflection is determined. The image processing apparatus according to claim 1, wherein when there are five or more points, the positional relationship between the stent portion corresponding to the cross-sectional data and the blood vessel is determined to be abnormal. The measuring means measures the area of the region surrounded by the closed curve of the cross-sectional data corresponding to the stent portion determined to be normal by the determining means;
When the area of the cross-sectional data measured by the measuring unit is out of a preset allowable range, the determination unit has an abnormal positional relationship between the stent portion corresponding to the cross-sectional data and the blood vessel. When the area of the cross-sectional data measured by the measuring means is within the allowable range, it is determined that the positional relationship between the stent portion corresponding to the cross-sectional data and the blood vessel is normal. The image processing apparatus according to claim 2.   When the area of all the cross-sectional data measured by the measuring unit is within the allowable range, the determining unit displays a message indicating that the positional relationship between the blood vessel and the stent is normal on the display unit. The image processing apparatus according to claim 3, wherein the image processing apparatus is displayed. The aneurysm data included in the three-dimensional image data obtained from the diagnostic imaging apparatus by imaging a subject in which a stent is placed in a blood vessel having an opening leading to the aneurysm and a contrast medium is injected Detection means for detecting dome data, blood vessel data, and stent data;
Based on the dome data and the blood vessel data detected by the detection means, an X axis passing on a blood vessel vector representing a traveling direction of the parent blood vessel data is set, and the three-dimensional image data is determined based on the set X axis. Cross-sectional image data generating means for generating cross-sectional image data sliced by a plurality of surfaces;
An image processing apparatus comprising: display means for displaying the cross-sectional image data generated by the cross-sectional image data generating means.   The image processing apparatus according to claim 5, wherein the slice image data generation unit generates a plurality of slice image data sliced by a plurality of planes perpendicular to the X axis.   The image processing apparatus according to claim 5, wherein the slice image data generation unit generates a plurality of slice image data sliced by a plurality of planes parallel to the X axis.   6. The image processing apparatus according to claim 5, wherein the slice image data generation unit generates a plurality of slice image data sliced by planes at a plurality of angles rotated about the X axis. Having attention area setting means for setting the attention area;
8. The slice image data generation means slices the attention area set by the attention area setting means at an interval narrower than a predetermined distance interval. The image processing apparatus described. Having attention area setting means for setting the attention area;
9. The image processing according to claim 8, wherein the cross-sectional image data generation unit slices the region of interest set by the region of interest setting unit at an interval narrower than a predetermined angle interval. apparatus.   The image processing apparatus according to claim 6, wherein the cross-sectional image data generation unit displays the plurality of cross-sectional image data side by side on the display unit.   9. The image processing apparatus according to claim 6, wherein the cross-sectional image data generation unit displays the plurality of cross-sectional image data in association with the positions of the plurality of surfaces. .   9. The cross-sectional image data generation unit displays the plurality of cross-sectional image data on the display unit in time series in order one by one. Image processing device. The detection means obtains the center of the detected dome data, extends a perpendicular perpendicular to the center line of the parent vessel data from the obtained center, and includes a point where the extended perpendicular intersects the parent vessel data Detect opening data corresponding to the opening of
The cross-sectional image data generation means is on plane data representing the opening data detected by the detection means as a plane, or on the curvature vector of the curved surface representing the opening data detected by the detection means as a curved surface. The image processing apparatus according to claim 5, wherein the X axis is provided. An imaging means for generating three-dimensional image data by imaging a subject in which a stent is placed in a blood vessel and a contrast medium is injected;
Detection means for detecting the stent data included in the three-dimensional image data generated by the imaging means;
Measuring means for measuring stent data detected by the detecting means;
Determination means for determining whether the positional relationship between the stent and the blood vessel is normal based on the measurement result measured by the measurement means;
Warning image data generating means for generating warning image data identifying an area of the three-dimensional image data corresponding to the portion of the stent determined to be abnormal by the determination means;
An image diagnostic apparatus comprising: display means for displaying warning image data generated by the warning image data generating means. An imaging means for generating a three-dimensional image data by imaging a subject in which a stent is placed in a blood vessel having an opening leading to an aneurysm and in which a contrast medium is injected;
Detecting means for detecting dome data, blood vessel data, and stent data, which are data of the aneurysm included in the three-dimensional image data generated by the imaging means;
Based on the dome data and the blood vessel data detected by the detection means, an X axis passing on a blood vessel vector representing a traveling direction of the parent blood vessel data is set, and the three-dimensional image data is determined based on the set X axis. Cross-sectional image data generating means for generating cross-sectional image data sliced by a plurality of surfaces;
An image diagnostic apparatus comprising: display means for displaying the cross-sectional image data generated by the cross-sectional image data generating means.

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