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Method and system for infarction classification based on CTP brain perfusion image data

A technology of image data and classification method, applied in the field of medical image analysis, can solve problems such as affecting surgery

Pending Publication Date: 2021-06-25
数坤(北京)网络科技股份有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of automatic calculation and processing, it is easy to include chronic infarction and old infarction in the emergency infarction core. Since acute infarction is the final emergency surgery treatment, such misjudgment will greatly affect the final surgery.

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  • Method and system for infarction classification based on CTP brain perfusion image data

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Embodiment 1

[0021] refer to figure 1 As shown, the present invention discloses a method for infarction classification based on CTP cerebral perfusion image data, comprising the following steps:

[0022] S1. Obtain cerebral perfusion image data, and extract infarct candidate regions. The extraction of infarct candidate regions is realized by deep learning neural network or parameter map thresholding method.

[0023] S2. Calculate the average CT value M of each sequence in the brain region where the infarction candidate area is located 1 And get the peak sequence ID, and get the average CT value M of each sequence in the brain area around the infarct candidate area 2 And get the peak sequence ID, and get the average CT value M of each sequence in the ventricle area 0 .

[0024] S3. Judging M 1 with M 0 The degree of proximity, if M 1 -M 0 is less than the preset first empirical threshold, it is determined that the infarct candidate area is an old infarction, if M 1 -M 0 If it is g...

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Abstract

The invention discloses amethod for infarction classification based on CTP brain perfusion image data and the method comprises the following steps: obtaining the brain perfusion image data, and extracting an infarction candidate region; calculating an average CT value M1 of each sequence of the brain region where the infarction candidate region is located and obtaining a peak sequence ID, obtaining an average CT value M2 of each sequence of the brain region around the infarction candidate region and obtaining a peak sequence ID, and obtaining an average CT value M0 of each sequence of the ventricular region; judging the closeness degree of M1 and M0, if M1-M0 is smaller than a first empirical threshold value, judging that the infarction candidate region is an old infarction, and if M1-M0 is larger than the first empirical threshold value, inputting sequence data of a brain region where the infarction candidate region is located and a brain region around the infarction candidate region into a judgment network, judging whether the infarction is chronic infarction or acute infarction, and obtaining a pre-judgment result; and performing secondary correction on the pre-discrimination result by using a second experience threshold value to obtain a final classification result of chronic infarction and acute infarction.

Description

technical field [0001] The invention relates to the technical field of medical image analysis, in particular to an infarction classification method and system based on CTP cerebral perfusion image data. Background technique [0002] As a very important imaging tool in the diagnosis and treatment of stroke, CTP cerebral perfusion imaging can accurately reflect the cerebral blood perfusion and is an effective means for early diagnosis of cerebral infarction, guidance of emergency thrombolytic therapy and prognosis. CTP cerebral perfusion image data analysis generally requires automatic processing to save time in emergency procedures. In the process of automatic calculation and processing, it is easy to include chronic infarction and old infarction in the infarct core of emergency department. Since acute infarction is the final emergency surgery treatment, such misjudgment will greatly affect the final surgery. Contents of the invention [0003] In order to solve the above p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06K9/62
CPCG06T7/0012G06T2207/10081G06T2207/30016G06T2207/20081G06T2207/20084G06F18/24
Inventor 张雅茜阳光左伟
Owner 数坤(北京)网络科技股份有限公司