Parameter diagram acquisition method and device for brain CT perfusion imaging, computer equipment and storage medium

Abstract

The invention relates to a parameter diagram acquisition method and device for brain CT perfusion imaging, computer equipment and a storage medium. The method comprises the following steps: acquiringCT perfusion imaging data related to the brain, wherein the CT perfusion imaging data comprises imaging data related to cerebral arteries and brain tissues; performing bilateral filtering and non-local mean filtering on the CT perfusion imaging data in sequence to obtain filtered CT perfusion imaging data; carrying out corresponding processing on the filtered CT perfusion imaging data to obtain afirst time density curve related to the cerebral arteries and a second time density curve related to the brain tissues, and carrying out delay correction according to the first time density curve andthe second time density curve to obtain a second corrected time density curve; performing singular value decomposition and smoothing processing to obtain a corresponding first sequence, and performingcalculation according to the first sequence and the second corrected time density curve to correspondingly obtain a second sequence; and performing corresponding calculation according to the second sequence to obtain a parameter diagram of brain CT perfusion imaging. By adopting the method, the CTP parameter diagram can be rapidly and accurately obtained.

Description

technical field [0001] The present application relates to the interdisciplinary technical fields of image processing and medical engineering, and in particular to a method, device, computer equipment and storage medium for obtaining parameter maps of CT perfusion imaging of the brain. Background technique [0002] Cerebral stroke, also known as stroke or cerebral infarction, is a type of brain tissue damage caused by cerebral ischemia, which has a high recurrence rate and disability rate. Brain CT perfusion (CT Perfusion, referred to as CTP) can well display the blood flow of the brain tissue, and is of great value in judging the lesion area of ​​a patient and estimating the infarct volume. However, the CTP image is disturbed by electronic noise, resulting in a large amount of noise and artifacts in the reconstructed image, which will have a serious impact on the subsequent calculation of the CTP parameter map. This will directly affect the doctor's diagnosis and treatment ...

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Problems solved by technology

But this method will have different regularization parameters for different data

Therefore, each case needs to be adjusted and cannot be automated

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