Method for auxiliary assessment of ischemic disease risk based on magnetic resonance cerebral perfusion image

Abstract

The invention provides an automatic image processing and displaying method based on a magnetic resonance cerebral perfusion image, which is used for assisting in evaluating cerebral ischemia disease risks and is characterized by comprising spatial deformation, multi-parameterization, brain map coverage and a method for evaluating ischemic cerebral disease risks. The image space deformation methodcomprises the following steps: head movement correction, which is used for adjusting a space difference generated by head movement in a cerebral perfusion imaging process; and standard brain registration: taking the standard brain as a reference to realize standardization of the imported cerebral perfusion image. The multi-parameterization is used for converting the original nuclear magnetic datainto cerebral image perfusion parameters such as cerebral blood flow, cerebral blood volume and artery arrival time, wherein the coverage brain map is used for enabling the parameterized cerebral perfusion image data to cover standard brain maps of different templates to form different regions of interest, and calculating average parameter values of the different regions of interest.The standard cerebral map comprises a cerebral artery blood supply area and an early CT scoring area of an Albetan stroke project. The ischemic brain disease risk assessment method is used for comparing the averageparameter value of the region of interest with a reference range, displaying the differentiation degree and automatically displaying the region of interest beyond the reference range. According to the invention, multi-parameter automatic partitioning and quantitative processing from nuclear magnetic cerebral perfusion original number to ischemic cerebral disease early-stage risk assessment are realized, and an effective assessment method is provided for early-stage screening, early-stage diagnosis and early-stage treatment of cerebral ischemic diseases.

Description

technical field [0001] The invention relates to the field of medical image processing, in particular to an automatic image processing and display method based on magnetic resonance cerebral perfusion images, which is used to assist in assessing the risk of cerebral ischemic diseases, and is characterized in that it includes spatial deformation, multi-parameterization, and overlay brain maps , and a method of assessing the risk of ischemic brain disease. Background technique [0002] With the development of the country's economy and the improvement of living standards, the incidence of brain diseases is also increasing. Stroke, as the leading cause of death in my country, has 270 million high-risk groups in China, 12.42 million patients, 5.5 million new cases each year, more than 2 million deaths each year, 3.5 million hospital admissions each year, and more than 40% recurrence in three years. Direct medicine The cost is 40 billion per year, and the timely treatment rate is o...

AI Technical Summary

Problems solved by technology

[0004] Due to the low signal-to-noise ratio of the traditional arterial spin labeling (ASL) nuclear magnetic brain perfusion imaging technology (that is, no contrast agent), the cerebral blood flow (CBF) perfusion parameters generated by it cannot be applied to the clinical diagnosis of brain defects through the ASPECTS score. early assessment

Images