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Method, device and system for obtaining brain CT perfusion parameter graph and computer storage medium

A parametric map and centroid technology, which is applied in the interdisciplinary fields of image processing and medical engineering, can solve the problems of time concentration attenuation affecting accuracy, limitations of application, and judgment deviation of infarction core area, so as to avoid the influence of post-processing calculation result deviation, The effect of ensuring reliability and improving accuracy

Pending Publication Date: 2021-12-31
HANGZHOU ARTERYFLOW TECH CO LTD
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Problems solved by technology

[0007] In order to solve the problem of inaccurate results of CT image correction, low generalization, limited application, long time-consuming and low efficiency, and affecting the accuracy of post-correction processing (such as dynamic , venous tissue time-concentration attenuation curve misalignment, infarction core area judgment deviation or error, residual function solution error), this application provides a method for obtaining brain CT perfusion parameter map

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  • Method, device and system for obtaining brain CT perfusion parameter graph and computer storage medium
  • Method, device and system for obtaining brain CT perfusion parameter graph and computer storage medium
  • Method, device and system for obtaining brain CT perfusion parameter graph and computer storage medium

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[0057] In the prior art methods for obtaining brain CT perfusion parameter maps, during the CT scanning process, there is a phenomenon that all CT perfusion images are not completely aligned, such as the original CT perfusion images of the 16th to 19th layers at the fifth moment shown in Figure 1 . The infarct core judgment is mainly based on rCBF (the blood flow is lower than 30% of the contralateral side, which is judged as the infarct core area). Therefore, if the image is not completely aligned, a large error will be introduced in the calculation of the infarct core. In addition, due to the unconscious shaking of the patient's head, the orientation of the CT perfusion image in a certain period of time is offset from that in other time periods. The solution error of the subsequent residual function. Therefore, it is of great significance to completely align all CT perfusion images through a certain method for the accurate calculation of various parameters of the patient's b...

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Abstract

The invention relates to a method, device and system for obtaining a brain CT perfusion parameter graph and a computer storage medium. The method comprises the steps of obtaining an original CT perfusion image, conducting correction processing on the CT perfusion image, conducting post-processing on the CT perfusion image, and obtaining the brain CT perfusion parameter graph. The correction processing comprises the steps of screening original CT perfusion images, obtaining an optimal candidate layer sequence; performing centroid calculation on the optimal candidate layer sequence to obtain centroid coordinates, and determining a central axis of the optimal candidate layer sequence at each moment through the centroid coordinates; calculating a correction angle according to the optimal candidate layer sequence; and performing image correction on the optimal candidate layer sequence according to the correction angle, and correcting the CT perfusion image based on the central axis of the optimal candidate layer at each moment. By optimizing the correction processing of the CT perfusion image, the accuracy of the correction processing result is improved, the influence on the deviation of the post-processing calculation result is avoided, and the efficiency of obtaining the brain CT perfusion parameter graph is improved.

Description

technical field [0001] The present application relates to the interdisciplinary technical field of image processing and medical engineering, in particular to a method, device, system and computer storage medium for obtaining brain CT perfusion parameter maps. Background technique [0002] Brain diseases are major diseases that threaten human life and health today, especially stroke and brain tumors. Taking stroke as an example, about 5.7 million people lose their lives due to stroke worldwide every year. Stroke has become the second leading cause of death after ischemic heart disease, and its disability rate is also quite high. In my country, according to the latest statistics, the number of stroke patients over the age of 40 is about 12.42 million, and about 1.96 million people die of stroke every year. The direct and indirect medical expenses and losses caused by brain diseases have also brought heavy economic burdens to countries all over the world. Therefore, how to pre...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/60G06T7/66G06T7/11G06T7/187G06T7/136G06T5/50A61B6/00A61B6/03
CPCG06T3/608G06T7/66G06T7/11G06T7/187G06T7/136G06T5/50A61B6/032A61B6/481A61B6/501A61B6/507A61B6/5211G06T2207/10081G06T2207/30016G06T2207/20224
Inventor 史文飞何京松刘欣鲁伟李秋婷向建平
Owner HANGZHOU ARTERYFLOW TECH CO LTD
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