CN113408152B - Coronary artery bypass grafting simulation system, method, medium and electronic equipment - Google Patents
Coronary artery bypass grafting simulation system, method, medium and electronic equipment Download PDFInfo
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Abstract
The invention provides a coronary artery bypass grafting simulation system, a method, a medium and electronic equipment. The system comprises: the medical image acquisition module is used for acquiring medical images of heart parts of the patient; a first vessel model acquisition module for acquiring a first vessel model from the medical image, the first vessel model comprising a coronary artery of a patient; a second vessel model acquisition module for acquiring a second vessel model from the first vessel model, the second vessel model comprising vessels associated with an internal mammary artery-based coronary bypass graft procedure; and the coronary artery bypass grafting simulation module is used for carrying out coronary artery bypass grafting simulation according to the second blood vessel model, and the result obtained by simulation can assist medical staff in carrying out coronary artery bypass grafting operation.
Description
Technical Field
The present invention relates to a simulation system, and in particular, to a coronary bypass grafting simulation system, a coronary bypass grafting simulation method, a coronary bypass grafting medium, and an electronic device.
Background
Coronary artery bypass grafting, also called coronary artery bypass grafting and heart bypass grafting, is an operation for taking a blood vessel of a patient to be transplanted to a corresponding position of a coronary artery, thereby establishing a channel between a proximal end and a distal end of a narrow part of the coronary artery, leading the blood vessel to bypass the narrow part and reach the distal end blood vessel, further recovering blood supply of cardiac muscle and relieving the ischemic and anoxic state of the cardiac muscle, and is one of very effective means for treating coronary heart disease, myocardial ischemia and the like. In the related art, a common bridging vessel graft material for coronary artery bypass grafting includes left and right internal mammary artery.
With the development of medical imaging technology, the use of CT scanning and corresponding image post-processing techniques to perform surgical planning and simulation of cardiovascular diseases has become a common clinical approach. A conventional CT cardiac scan sequence is to scan only a region of the heart along the Z-axis direction of the CT system (head-to-foot direction of the human body) for about 16 cm, and the processed heart image is shown in fig. 1, and the image region includes only the image down to the apex of the heart and up to a portion of the ascending aorta. However, the image does not contain all blood vessels related to the coronary bypass grafting operation, and therefore, the coronary bypass grafting simulation cannot be performed based on the image.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a system, a method, a medium and an electronic device for coronary bypass grafting simulation, which are used for solving the above-mentioned problems in the prior art.
To achieve the above and other related objects, a first aspect of the present invention provides a coronary bypass graft simulation system based on an internal mammary artery, the system comprising: the medical image acquisition module is used for acquiring medical images of heart parts of the patient; a first vessel model acquisition module for acquiring a first vessel model from the medical image, the first vessel model comprising a coronary artery of a patient; a second vessel model acquisition module for acquiring a second vessel model from the first vessel model, the second vessel model comprising vessels associated with an internal mammary artery-based coronary bypass graft procedure; and the coronary artery bypass grafting simulation module is used for carrying out coronary artery bypass grafting simulation according to the second blood vessel model.
In an embodiment of the first aspect, the second blood vessel model acquisition module includes: a missing blood vessel model acquisition unit for acquiring a missing blood vessel model; a second blood vessel model acquisition unit for merging the missing blood vessel model to the first blood vessel model to obtain the second blood vessel model.
In an embodiment of the first aspect, the missing blood vessel model obtaining unit obtains a corresponding blood vessel in a standard blood vessel model as the missing blood vessel model; or the missing blood vessel model obtaining unit adjusts corresponding blood vessels in the standard blood vessel model according to the medical image to obtain the missing blood vessel model.
In an embodiment of the first aspect, the missing vessel model obtaining unit processes the medical image by generating an impedance network model to obtain the missing vessel model.
In an embodiment of the first aspect, the coronary bypass graft simulation module comprises: the bridging point acquisition unit is used for acquiring a bridging point at the far end of the coronary artery stenosis position in the second blood vessel model; and the operation simulation unit is used for virtually bridging the internal mammary artery in the second blood vessel model to the bridging point.
In an embodiment of the first aspect, the coronary bypass graft simulation module further comprises: the interruption point acquisition unit is used for acquiring the interruption point of the internal mammary artery; the surgical simulation unit is also used for virtually cutting off the internal mammary artery at the cutting-off point.
In an embodiment of the first aspect, the system further comprises: and the hemodynamic analysis module is used for carrying out hemodynamic analysis according to the result of the coronary bypass grafting simulation.
A second aspect of the present invention provides a method for simulating coronary bypass grafting based on an internal mammary artery, the method comprising: acquiring a medical image of a heart region of a patient; acquiring a first vessel model from the medical image, the first vessel model comprising a coronary artery of a patient; obtaining a second vessel model from the first vessel model, the second vessel model comprising vessels associated with a mammary artery-based coronary bypass graft procedure; and carrying out coronary artery bypass grafting simulation according to the second blood vessel model.
A third aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for coronary bypass graft simulation based on internal mammary artery according to the second aspect of the present invention.
A fourth aspect of the present invention provides an electronic device comprising: a memory storing a computer program; and the processor is in communication connection with the memory and executes the coronary artery bypass grafting simulation method based on the internal mammary artery according to the second aspect of the invention when the computer program is called.
As described above, the coronary bypass graft simulation system described in one or more embodiments of the present invention has the following advantages:
the coronary bypass graft simulation system is capable of acquiring a first vessel model from a medical image of a heart site of a patient and is capable of acquiring a second vessel model from the first vessel model, wherein the second vessel model comprises vessels associated with a mammary artery-based coronary bypass graft procedure. Therefore, the coronary artery bypass grafting simulation can be performed based on the second blood vessel model, and the result obtained by the simulation can assist medical staff in performing the coronary artery bypass grafting operation.
Drawings
Fig. 1 shows an example of a CT image of a heart region acquired in the related art.
FIG. 2A is a schematic diagram of a coronary bypass graft simulation system according to an embodiment of the invention.
FIG. 2B is a diagram illustrating a first vessel model acquired by the coronary bypass graft simulation system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second vessel model acquisition module of the coronary bypass graft simulation system according to an embodiment of the invention.
Fig. 4A and fig. 4B are schematic structural diagrams of a coronary bypass graft simulation module of the coronary bypass graft simulation system according to an embodiment of the invention.
FIG. 5 is a flow chart illustrating a hemodynamic analysis of a coronary bypass graft simulation system according to an embodiment of the present invention.
FIG. 6 is a flow chart illustrating a method for simulating coronary bypass grafting according to an embodiment of the invention.
Fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Description of element reference numerals
1. Coronary artery bypass grafting simulation system
11. Medical image acquisition module
12. First blood vessel model acquisition module
13. Second blood vessel model acquisition module
131. Missing blood vessel model acquisition unit
132. Second blood vessel model acquisition unit
14. Coronary artery bypass grafting simulation module
141. Bridge point acquisition unit
142. Cut-off point acquisition unit
143. Operation simulation unit
700. Electronic equipment
710. Memory device
720. Processor and method for controlling the same
730. Display device
S51 to S53 steps
S61 to S64 steps
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the illustrations, not according to the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex. Moreover, relational terms such as "first," "second," and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
A conventional CT cardiac scan sequence is simply a scan of the heart region over a range of about 16 cm in the Z-axis direction of the CT system (head-to-foot direction of the human body) and includes only images down to the apex of the heart and up to a portion of the ascending aorta. However, the image does not contain all blood vessels related to the coronary bypass grafting operation, and therefore, the coronary bypass grafting simulation cannot be performed based on the image. In view of this problem, referring to fig. 2A, in one embodiment of the present invention, a coronary bypass graft simulation system 1 is provided, where the coronary bypass graft simulation system 1 includes a medical image acquisition module 11, a first vessel model acquisition module 12, a second vessel model acquisition module 13, and a coronary bypass graft simulation module 14.
The medical image acquisition module 11 is configured to acquire a medical image of a heart region of a patient, such as a CT image.
The first vessel model acquisition module 12 is connected to the medical image acquisition module 11 for acquiring a first vessel model from the medical image, the first vessel model comprising a coronary artery of the patient.
Alternatively, the first vessel model may contain only the complete coronary arteries (left and right coronary arteries) or may contain the complete coronary arteries and a portion of the aorta connected to the coronary arteries, as shown in fig. 2B.
Alternatively, the first vessel model obtaining module 12 may segment the medical image using a neural network model-based segmentation network such as U-Net, V-Net, or the like to obtain the first vessel model.
Alternatively, the first blood vessel model acquisition module 12 may acquire the first blood vessel model from the medical image according to a blood vessel gray scale range. Specifically, the first blood vessel model obtaining module 12 may obtain, from the medical image, all pixel points having gray values within the gray range of the blood vessel as blood vessel pixel points, and obtain the first blood vessel model according to all the blood vessel pixel points. The blood vessel gray scale range can be set according to actual requirements or experience.
The second blood vessel model obtaining module 13 is connected to the first blood vessel model obtaining module 12, and is configured to obtain a second blood vessel model according to the first blood vessel model, where the second blood vessel model includes blood vessels related to a target operation, and the target operation is a coronary bypass grafting operation based on an internal mammary artery, and the second blood vessel model includes blood vessels related to a coronary bypass grafting operation based on an internal mammary artery. For example, the second vessel model may comprise coronary arteries, ascending aorta, aortic arch, subclavian arteries and internal mammary arteries, wherein the second vessel model comprises internal mammary arteries such as left internal mammary artery and/or right internal mammary artery.
The coronary artery bypass grafting simulation module 14 is connected with the second blood vessel model acquisition module 13, and is used for performing coronary artery bypass grafting simulation according to the second blood vessel model, and the result obtained by the simulation can assist medical staff in performing the coronary artery bypass grafting operation based on the internal mammary artery.
As is apparent from the above description, the coronary bypass graft simulation system 1 according to the present embodiment is capable of acquiring a first blood vessel model from a medical image of a heart site of a patient, and is capable of acquiring a second blood vessel model from the first blood vessel model, wherein the second blood vessel model contains blood vessels associated with a coronary bypass graft operation based on an internal mammary artery. Therefore, coronary bypass graft simulation can be performed based on the second vessel model.
Referring to fig. 3, in an embodiment of the invention, the second blood vessel model obtaining module 13 includes a missing blood vessel model obtaining unit 131 and a second blood vessel model obtaining unit 132.
The missing blood vessel model obtaining unit 131 is configured to obtain a missing blood vessel model, wherein the missing blood vessel model includes blood vessels related to a coronary bypass graft operation based on an internal mammary artery in addition to the first blood vessel model, and the missing blood vessel model and the first blood vessel model can be combined into the second blood vessel model.
Optionally, the missing vessel model includes an ascending aorta, an aortic arch, a subclavian artery, and an internal mammary artery that are not imaged in the medical image.
The second vessel model obtaining unit 132 is connected to the missing vessel model obtaining unit 131 for merging the missing vessel model to the first vessel model to obtain the second vessel model.
Alternatively, when the first vessel model contains only the complete coronary arteries, the missing vessel model contains the aorta, and the second vessel model acquisition unit 132 may stitch the coronary arteries to the aorta based on anatomical prior knowledge to achieve the merging.
Optionally, when the first blood vessel model includes a complete coronary artery and a partial aorta, the missing blood vessel model includes a partial or complete aorta, and the second blood vessel model obtaining unit 132 may combine the two partial aorta according to the diameter of the aorta in the first blood vessel model and the diameter of the aorta in the missing blood vessel model.
In an embodiment of the present invention, the missing blood vessel model obtaining unit 131 obtains a corresponding blood vessel in a standard blood vessel model as the missing blood vessel model. The standard blood vessel model comprises a standard missing blood vessel model, and can be obtained by registering corresponding blood vessel models of a plurality of patients in practical application, or can be obtained according to teaching materials, tool books and the like in the field. For example, when the missing vessel model includes the ascending aorta, aortic arch, subclavian artery, and internal mammary artery, the standard vessel model includes the standard ascending aorta, aortic arch, subclavian artery, and internal mammary artery.
In this embodiment, the missing blood vessel model obtaining unit 131 may obtain the second blood vessel model only by splicing the corresponding blood vessel in the standard blood vessel model to the first blood vessel model as the missing blood vessel model, which is simple in implementation and low in operation.
In an embodiment of the present invention, the missing blood vessel model obtaining unit 131 adjusts corresponding blood vessels in the standard blood vessel model according to the medical image to obtain the missing blood vessel model. Specifically, the missing blood vessel model obtaining unit 131 obtains the size parameters of the heart and the blood vessel of the patient according to the medical image, and adjusts the size of the corresponding blood vessel in the standard blood vessel model according to the size parameters to obtain the missing blood vessel model. The missing vessel model obtained in this way is closer to the actual vessel of the patient.
In an embodiment of the present invention, the missing blood vessel model obtaining unit 131 processes the medical image by using a generated impedance network model to obtain the missing blood vessel model.
The training method for generating the countermeasure network model comprises the following steps: and acquiring medical images of a plurality of patients and corresponding missing blood vessel models thereof as training data, and training the generated countermeasure network model by utilizing the training data, wherein the medical images and the missing blood vessel models in the training data are real data.
Preferably, in this embodiment, the generating the countermeasure network model includes generating a model and a discrimination model, and when training is performed, the generating model generates a training ischemia model according to a medical image of a patient in the training data, and obtains a loss function value according to a difference parameter such as an aortic diameter difference and an intra-mammary artery length difference between the training ischemia model and a real ischemia model, so as to adjust a structure and parameters thereof. The judging model judges whether the training ischemia model is true according to parameters such as the aortic diameter, the internal mammary artery length and the like of the training ischemia model.
Referring to fig. 4A, in an embodiment of the present invention, the coronary bypass grafting simulation module 14 includes a bridge point obtaining unit 141 and a surgical simulation unit 143.
The bridge point obtaining unit 141 is connected to the second blood vessel model obtaining module 13, and is configured to obtain a bridge point distal to a coronary artery stenosis position in the second blood vessel model.
Alternatively, the bridge point obtaining unit 141 may select the bridge point from the coronary arteries according to the received bridge point selection instruction, where the user may input the bridge point selection instruction through an interactive interface.
Alternatively, the bridge point obtaining unit 141 obtains the bridge point according to the stenosis position of the coronary artery. Specifically, the bridge point obtaining unit 141 obtains the vessel lumen diameter of each point of the coronary artery vessel according to the first vessel model or the medical image, and obtains the stenosis position in the coronary artery vessel according to the relationship between the vessel lumen diameter and a diameter threshold, based on which the bridge point obtaining unit 141 may select a point near the distal end of the stenosis position as the bridge point.
The surgical simulation unit 143 is connected to the bridge point obtaining unit 141, and is configured to virtually bridge the internal mammary artery in the second blood vessel model to the bridge point, so as to form a new blood vessel path, where the new blood vessel path includes, for example: the virtual coronary bypass grafting operation is realized by the distal end of the narrow position of the aorta-subclavian artery-mammary artery-coronary artery. The virtual bridging means that the blood vessel connection between the internal mammary artery and the bridging point is realized in a simulation mode.
In practical applications, the missing blood vessel model may only include a portion of the internal mammary artery, and the operation simulation unit 143 may virtually bridge the portion of the internal mammary artery to the bridge point to form the new blood vessel path. Medical personnel can make or adjust the surgical plan by observing the information of the length, diameter, blood flow rate, etc. of the new vascular access.
Optionally, referring to fig. 4B, the coronary bypass graft simulation module 14 may further include a cut-off point obtaining unit 142, where the cut-off point obtaining unit 142 is connected to the second blood vessel model obtaining module 13, and is configured to obtain a cut-off point of the internal mammary artery. At this time, the operation simulation unit 143 is further connected to the interception point obtaining unit 142, and is configured to virtually intercept the internal mammary artery at the interception point and virtually bridge the internal mammary artery to the bridge point.
Alternatively, the intercept point obtaining unit 142 may select the intercept point from the internal mammary artery according to the received intercept point selection instruction, where the user may input the intercept point selection instruction through an interactive interface.
Alternatively, the cut-off point obtaining unit 142 obtains the cut-off point according to the position of the bridging point and the position of the internal mammary artery origin. Specifically, the cut-off point obtaining unit 142 obtains a distance between the mammary artery starting point and the bridging point according to the position of the mammary artery starting point and the bridging point as a bridging distance, and then selects a point from the mammary artery according to the bridging distance and the position of the bridging point as the cut-off point, so that the length of a bridged blood vessel segment can ensure that a blood vessel path is established between the mammary artery starting point and the bridging point, wherein the bridged blood vessel segment refers to a blood vessel segment between the mammary artery starting point and the cut-off point.
In an embodiment of the present invention, the coronary bypass graft simulation system further includes a hemodynamic analysis module, where the hemodynamic analysis module is configured to perform hemodynamic analysis according to a result of the coronary bypass graft simulation.
Optionally, referring to fig. 5, the method for performing a hemodynamic analysis by the hemodynamic analysis module in this embodiment includes:
s51, obtaining the hemodynamic environment after the virtual coronary artery bypass grafting operation according to the simulation result.
S52, obtaining the flow resistance boundary condition of the bridging point position on the coronary artery according to the hemodynamic environment.
S53, calculating FFR (Fractional Flow Reserve ) values of all the positions of the blood vessels at the distal end of the coronary artery stenosis according to the flow resistance boundary condition by adopting a hemodynamic analysis method.
Optionally, the hemodynamic analysis method further comprises: the FFR values are displayed to medical personnel throughout the blood vessel distal to the coronary stenosis to assist the medical personnel in developing or adjusting the surgical plan.
In an embodiment of the present invention, the coronary bypass grafting simulation system further includes a display interaction module, where the display interaction module is configured to display a related GUI interaction interface of the coronary bypass grafting simulation system.
Optionally, the display interaction module is configured to display a result of the coronary bypass graft simulation, including a cut-off point of an internal mammary artery, a bridging point of a coronary artery, and/or a new vascular access formed after virtual bridging.
Optionally, the display interaction module is further configured to display the medical image, the first blood vessel model and the second blood vessel model.
Optionally, the display interaction module is further configured to receive a intercept point selection instruction and/or a bridge point selection instruction input by a user, and forward the instruction to a corresponding module.
Optionally, the display interaction module is further configured to receive a blood vessel complement instruction input by a user and forward the blood vessel complement instruction to the second blood vessel model acquisition module, where the second blood vessel model acquisition module complements the first blood vessel model according to the blood vessel complement instruction to acquire the second blood vessel model.
For example, the user may click near the left mammary artery through a mouse to input a blood vessel completion instruction, the second blood vessel model obtaining module obtains models of the ascending aorta, the aortic arch, the subclavian artery and the left mammary artery according to the blood vessel completion instruction, and merges the models into the first blood vessel model to obtain the second blood vessel model, and the display interaction interface may display the second blood vessel model to the user, so as to realize a function of one-touch completion of blood vessels.
For another example, the user may click near the right mammary artery to input another blood vessel complement instruction, and the second blood vessel model obtaining module may obtain the second blood vessel model in a similar manner as described above, where the function of one-click blood vessel complement may be also achieved, which is different only in that the internal mammary artery in the second blood vessel model is the right internal mammary artery in this example.
Based on the description of the coronary artery bypass grafting simulation system based on the internal mammary artery, the invention also provides a coronary artery bypass grafting simulation method based on the internal mammary artery. Referring to fig. 6, in an embodiment of the invention, the method includes:
s61, acquiring a medical image of the heart part of the patient.
S62, acquiring a first blood vessel model according to the medical image, wherein the first blood vessel model comprises coronary arteries of a patient.
S63, acquiring a second blood vessel model according to the first blood vessel model, wherein the second blood vessel model comprises blood vessels related to a target operation, and the target operation is a coronary bypass grafting operation based on the internal mammary artery.
S64, performing coronary artery bypass grafting simulation according to the second blood vessel model.
The steps S61 to S64 correspond to the corresponding modules in the coronary artery bypass graft simulation system 1 shown in fig. 2A one by one, and the alternative scheme of the coronary artery bypass graft simulation system 1 may be adapted to the coronary artery bypass graft simulation method according to the embodiment after adjustment. For saving the description space, the description is omitted here.
Based on the above description of the coronary artery bypass graft simulation method, the present invention further provides a computer readable storage medium having a computer program stored thereon, which when executed by a processor, implements the internal mammary artery-based coronary artery bypass graft simulation method shown in fig. 6.
Based on the description of the coronary bypass grafting simulation method, the invention further provides electronic equipment. Referring to fig. 7, in an embodiment of the invention, the electronic device 700 includes a memory 710 and a processor 720. The memory 710 stores a computer program; the processor 720 is communicatively connected to the memory 710, and executes the coronary artery bypass graft simulation method based on the internal mammary artery shown in fig. 6 when the computer program is invoked.
Optionally, the electronic device 700 of the present embodiment further includes a display 730, where the display 730 is communicatively connected to the memory 710 and the processor 720, and is configured to display a GUI interactive interface related to the coronary bypass grafting simulation method based on the internal mammary artery.
The protection scope of the coronary artery bypass grafting simulation method is not limited to the execution sequence of the steps listed in the embodiment, and all the schemes of step increase and decrease and step replacement in the prior art according to the principles of the invention are included in the protection scope of the invention.
The invention also provides a coronary artery bypass grafting simulation system, which can realize the coronary artery bypass grafting simulation method, but the realization device of the coronary artery bypass grafting simulation method comprises but is not limited to the structure of the coronary artery bypass grafting simulation system listed in the embodiment, and all the structural deformation and replacement of the prior art according to the principles of the invention are included in the protection scope of the invention.
In summary, the coronary artery bypass graft simulation system of the present invention can obtain a first blood vessel model according to a medical image of a heart portion of a patient, and can obtain a second blood vessel model according to the first blood vessel model, wherein the second blood vessel model includes blood vessels related to a coronary artery bypass graft operation based on an internal mammary artery. Therefore, the coronary artery bypass grafting simulation can be performed based on the second blood vessel model, and the result obtained by the simulation can assist medical staff in performing the coronary artery bypass grafting operation. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (8)
1. An intra-mammary artery-based coronary bypass graft simulation system, the system comprising:
the medical image acquisition module is used for acquiring medical images of heart parts of the patient;
a first vessel model acquisition module for acquiring a first vessel model from the medical image, the first vessel model comprising a coronary artery of a patient, wherein the method of acquiring the first vessel model comprises: segmenting the medical image with a neural network model based segmentation network to obtain the first vessel model; or, acquiring all pixel points with gray values within a blood vessel gray range from the medical image as blood vessel pixel points, wherein a set of the blood vessel pixel points is the first blood vessel model;
a second vessel model acquisition module for acquiring a second vessel model from the first vessel model, the second vessel model comprising vessels associated with a coronary bypass graft procedure based on an internal mammary artery, wherein the method of acquiring the second vessel model from the first vessel model comprises: acquiring a missing blood vessel model, and combining the missing blood vessel model to the first blood vessel model to obtain the second blood vessel model;
the coronary artery bypass grafting simulation module comprises a bridging point acquisition unit and a surgery simulation unit, and is used for carrying out coronary artery bypass grafting simulation according to the second blood vessel model, wherein the bridging point acquisition unit is used for acquiring a bridging point at the far end of a coronary artery stenosis position in the second blood vessel model, and the surgery simulation unit is used for virtually bridging an internal mammary artery in the second blood vessel model to the bridging point.
2. The system according to claim 1, wherein:
the missing blood vessel model obtaining unit obtains a standard blood vessel corresponding to the missing blood vessel model in a standard blood vessel model as the missing blood vessel model; or alternatively
The missing blood vessel model obtaining unit obtains size parameters of the heart and the blood vessel of the patient according to the medical image, and adjusts the size of the standard blood vessel corresponding to the missing blood vessel model according to the size parameters so as to obtain the missing blood vessel model.
3. The system according to claim 1, wherein: the missing blood vessel model acquisition unit processes the medical image using a generation-oriented network model to acquire the missing blood vessel model.
4. The system of claim 1, wherein the coronary bypass graft simulation module further comprises:
the interruption point acquisition unit is used for acquiring the interruption point of the internal mammary artery;
the surgical simulation unit is also used for virtually cutting off the internal mammary artery at the cutting-off point.
5. The system of claim 1, wherein the system further comprises: and the hemodynamic analysis module is used for carrying out hemodynamic analysis according to the result of the coronary bypass grafting simulation.
6. A method for simulating coronary artery bypass grafting based on an internal mammary artery, the method comprising:
acquiring a medical image of a heart region of a patient;
acquiring a first vessel model from the medical image, the first vessel model comprising a coronary artery of a patient, wherein the method of acquiring the first vessel model comprises: segmenting the medical image with a neural network model based segmentation network to obtain the first vessel model; or, acquiring all pixel points with gray values within a blood vessel gray range from the medical image as blood vessel pixel points, wherein a set of the blood vessel pixel points is the first blood vessel model;
obtaining a second vessel model from the first vessel model, the second vessel model comprising vessels associated with a mammary artery-based coronary bypass graft procedure, wherein the method of obtaining the second vessel model from the first vessel model comprises: acquiring a missing blood vessel model, and combining the missing blood vessel model to the first blood vessel model to obtain the second blood vessel model;
performing coronary bypass graft simulation according to the second vessel model, including: and obtaining a bridging point at the far end of the coronary artery stenosis position in the second blood vessel model, and virtually bridging the internal mammary artery in the second blood vessel model to the bridging point.
7. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program, when executed by a processor, implements the method for coronary bypass graft simulation based on internal mammary artery of claim 6.
8. An electronic device, the electronic device comprising:
a memory storing a computer program;
a processor, communicatively coupled to the memory, which when invoked performs the method of coronary bypass graft simulation based on internal mammary artery of claim 6.
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