Vascular segmentation method and device and computer device

Abstract

The invention discloses a vascular segmentation method and device and a computer device. The vascular segmentation method includes: acquiring perfusion image data of a selected object; performing vascular reinforcement on the perfusion image data on the basis of change information of concentration of a contrast in a vessel and / or vascular space tubular structural information to obtain vascular reinforcement image data; using a preset threshold to perform image segmentation on the vascular reinforcement image data so as to extract macro-vascular image data and micro-vascular image data; fusingthe macro-vascular image data and the micro-vascular image data to obtain a vascular image mask. Vascular reinforcement is performed through time and space information, such as changes in the contrastin the vessels and tubular structure of the vessels so as to extract macro vessels and micro vessels, the influence of non-rigid deformation portions, such as nasal cavity, upon vascular segmentationis effectively avoided, richer vascular structure can be extracted for clinical diagnosis and reference, and vascular segmentation accuracy is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a blood vessel segmentation method and device based on perfusion imaging and a computer device. Background technique [0002] In recent years, the research and application of perfusion in the diagnosis, prognosis and efficacy evaluation of tumors, especially brain tumors, have become more and more extensive. Perfusion imaging can be used to quantitatively analyze the distribution of microvessels and blood perfusion status in tissues, provide diagnostic basis for abnormal cerebral perfusion diseases (such as stroke, etc.), and provide effective reference for making treatment decisions. [0003] For example, the clinical diagnosis of cerebral apoplexy usually requires the combination of unenhanced CT (Computed Tomography, computerized tomography) and angiography (CT Angiography, CTA) to diagnose cerebral apoplexy, but there is a relatively large radiation dose. CT...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a blood vessel segmentation method and device based on perfusion imaging and a computer device in order to overcome the defect that the blood vessel segmentation method in the prior art is likely to cause incomplete blood vessels, thereby seriously reducing the accuracy of blood vessel segmentation

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