Non-invasive calculation method of ffr in superior mesenteric artery dissection based on CT images
A calculation method and arterial dissection technology, which is applied in the field of non-invasive calculation of FFR of superior mesenteric artery dissection, and can solve the problem of inability to quickly and accurately obtain fractional flow reserve FFR.
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[0026] The present invention will be further described below in conjunction with the accompanying drawings.
[0027] refer to Figure 1 to Figure 5 , a non-invasive calculation method for superior mesenteric artery dissection FFR based on CT images, comprising the following steps:
[0028] S01: Image collection: collect CT angiography (CTA) images of the patient's superior mesenteric artery through a CT scanner;
[0029] S02: Extract the ostium of the superior mesenteric artery (SMA): The dissection opening of the superior mesenteric artery is usually located 1.5 to 3 cm away from the opening of the superior mesenteric artery.
[0030] S03: Extract the superior mesenteric artery: take the superior mesenteric artery ostium as the seed point, extract the superior mesenteric artery through region growth, calculate the average gray level and average variance of the superior mesenteric artery, perform binarization according to the artery image, and follow the direction of the supe...
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