Surface area positioning method and device for intracranial aneurysm, computer equipment and storage medium

Abstract

The invention discloses an intracranial aneurysm surface area positioning method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining an intracranial angiography image, and constructing a three-dimensional aneurysm blood vessel model based on the intracranial angiography image; segmenting the three-dimensional aneurysm blood vessel model along a tumor neck to obtain a three-dimensional aneurysm model, and performing UV expansion on the three-dimensional aneurysm model to obtain a UV plane model; determining a farthest point on the tumor neck boundary space curve along the blood flow direction and the highest point of the aneurysm on the three-dimensional aneurysm blood vessel model, taking a mapping point of the highest point on the UV plane model as a pole, taking a ray formed by the pole and the mapping point of the farthest point on the UV plane model as a polar axis, and establishing a polar coordinate system on the UV plane model; and positioning and dividing the surface area of the intracranial aneurysm according to the polar coordinates of the area segmentation points of the three-dimensional aneurysm model at the mapping points of the UV plane model. According to the method, the surface area of the intracranial aneurysm can be accurately positioned.

Description

technical field [0001] The invention belongs to the field of medical image data processing, and in particular relates to a method, device, computer equipment and storage medium for locating the surface area of ​​an intracranial aneurysm. Background technique [0002] An intracranial aneurysm is an abnormal bulge of an intracranial artery due to factors such as congenital anomalies or acquired injuries. Unruptured aneurysms usually cause mild symptoms, but ruptured aneurysms ooze or bleed and are fatal and often acute. Therefore, intracranial medical imaging is of great significance for three-dimensional reconstruction of aneurysms and nearby arteries, and for studying the surface area information of aneurysms based on morphology and hemodynamics. [0003] In the prior art, the three-dimensional aneurysm vessel model is reconstructed based on intracranial angiography images, the aneurysm model is segmented by the space curve of the aneurysm neck boundary, and the aneurysm is...

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Problems solved by technology

This method can realize the automatic segmentation of intracranial aneurysm images, bu

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