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.

Active Publication Date: 2021-05-18
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0006] In order to overcome the inability to quickly and accurately obtain the fractional flow reserve FFR in the prior art, in order to solve the above-mentioned technical problems, the present invention provides a non-invasive calculation method for FFR of superior mesenteric artery dissection based on CT images, based on CT images of mesenteric artery, Can quickly and accurately obtain fractional blood flow reserve FFR

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  • Non-invasive calculation method of ffr in superior mesenteric artery dissection based on CT images
  • Non-invasive calculation method of ffr in superior mesenteric artery dissection based on CT images
  • Non-invasive calculation method of ffr in superior mesenteric artery dissection based on CT images

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Embodiment Construction

[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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Abstract

A non-invasive calculation method for FFR of superior mesenteric artery dissection based on CT images, comprising the following steps: S01: image acquisition; S02: extraction of superior mesenteric artery ostium; S03: extraction of superior mesenteric artery; S04: generation of superior mesenteric artery grid model; S06: Superior mesenteric artery FFR CT Calculation: by formula FFR CT =P d / P a Calculate the fractional flow reserve, where P a is the blood pressure upstream of the mesenteric dissection, P d is the blood pressure downstream of the mesenteric dissection; S07: Carry out the above experimental steps on the patient's CTA image, and calculate the FFR CT value. Based on the CT image of the mesenteric artery, the present invention can quickly and accurately obtain the fractional blood flow reserve (FFR) automatically.

Description

technical field [0001] The invention relates to the field of imaging evaluation of mesenteric artery, in particular to a non-invasive calculation method of superior mesenteric artery dissection FFR based on CT images. Background technique [0002] Dissection of the superior mesenteric artery is a tear between the intima and the media of the artery, and blood enters the media through the breach to form a false lumen, causing the intima to protrude into the false lumen, resulting in narrowing or collapse of the true lumen. The typical superior mesenteric artery dissection rupture is located 1.5-3 cm away from the superior mesenteric artery opening, which is the transition point between the relatively fixed position and the free position of the superior mesenteric artery, and is easily affected by the shear force of blood flow. Force may play an important role in the pathogenesis of this disease. [0003] The typical signs of dissection on enhanced CT can clearly show true and...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T15/00
CPCG06T7/0012G06T15/005G06T2207/10081G06T2207/30028G06T2207/30104
Inventor 汪晓妍何露露刘震杰滕忠照黄晓洁张玲刘琪琪钟幸宇
Owner ZHEJIANG UNIV OF TECH
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