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Thoracic aortic dissecting aneurysm first rupture position locating method

A technology for dissecting aneurysms and thoracic aorta, applied in image analysis, image enhancement, instruments, etc., can solve the problems of increasing the pain of patients, finding the location of the first incision, and the injection concentration of contrast agent should not be too high, so as to relieve the pain of patients. Painful, short positioning time effects

Active Publication Date: 2018-11-09
SOUTHEAST UNIV
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Problems solved by technology

However, due to the limited frame rate of DSA images and the injection concentration of contrast agent should not be too high, it is difficult to directly find the first breach location based on DSA images
At the same time, in order to reduce breathing artifacts, the patient is usually in a state of respiratory arrest during the shooting process, which increases the pain of the patient

Method used

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  • Thoracic aortic dissecting aneurysm first rupture position locating method
  • Thoracic aortic dissecting aneurysm first rupture position locating method
  • Thoracic aortic dissecting aneurysm first rupture position locating method

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Embodiment 1

[0051] Below in conjunction with accompanying drawing and embodiment, the patent of the present invention is described in further detail, figure 1 It is an overall flow chart of the present invention. In this embodiment, the imaging equipment used is: PHILIPS AlluraXper FD20; the contrast agent is: Omnipaque (iodine content specification: 350mg / ml, dosage 100ml), which is a product of (General Electric Pharmaceutical (Shanghai) Co., Ltd.). The method of contrast medium angiography was as follows: a catheter was punctured through the femoral artery, and a high-pressure syringe (Medrad Mark V Provis) was used to inject contrast medium into the aorta through a 5F gold-marked pigtail catheter. The filming speed was 6 frames / s, and the injection pressure was 600 psi (4136.85 kPa). In this embodiment, the software used in the algorithm is Matlab 2010.

[0052] Step 1: Segment the aneurysm according to the difference in the fading time between the tumor body and the blood vessel af...

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Abstract

The invention relates to the technical field of medical image post-processing, and particularly relates to a thoracic aortic dissecting aneurysm first rupture position locating method based on a digital subtraction angiography image. Firstly the aneurysm is segmented according to the fading time difference between the tumor and the blood vessel after stop of contrast agent injection; then the cardiac cycle is segmented by using the gradient change characteristic of the area of the region of the fluid injected by the contrast agent; then the time integral image of the hemangioma region within the first cardiac cycle after the contrast agent starts entering the region is solved and the intensity distribution curve is solved, and the true cavity and the false cavity are segmented according tothe intensity distribution curve; and finally the position of the first rupture relative to the true cavity is determined through the area ratio of the true cavity to the false cavity and the first rupture is located. The locating success rate of the method is about 85%. Compared with the manual locating method, the method has short locating time and can reduce the image acquisition time and reduce the injection amount of the contrast agent.

Description

technical field [0001] The invention relates to the technical field of post-processing of medical images, in particular to a method for locating the position of the first breach of thoracic aortic dissection aneurysm based on digital subtraction angiography images. Background technique [0002] Aortic dissection generally refers to a condition in which the intima of the aorta is torn due to various reasons, the high-pressure blood flow of the artery enters the media of the aorta through the breach, and the media of the artery is separated from the adventitia, forming a false lumen. Its pathological basis is the degeneration of elastic fibers and smooth muscles in the middle layer of the aortic wall. Aortic dissection is acute and has a high mortality rate. Early and accurate diagnosis is the key to obtain significant therapeutic effect. [0003] The purpose of surgical treatment of aortic dissection is to select a surgical method according to the location of the dissection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/187G06T7/62
CPCG06T7/0012G06T7/11G06T7/187G06T7/62G06T2207/30101G06T2207/10081
Inventor 黄朔朱斌孙钰周平万遂人程乐张冰
Owner SOUTHEAST UNIV