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Method for automatically calculating ischemic penumbra by using ASL of brain template

An ischemic penumbra and automatic calculation technology, applied in the field of medical images, can solve the problems of not further eliminating interference areas and affecting the accuracy and precision of ischemic penumbra calculated by ASL technology, so as to improve accuracy and precision sexual effect

Pending Publication Date: 2022-05-13
安影科技(北京)有限公司
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Problems solved by technology

[0004] However, the ASL automatic ischemic penumbra calculation technology applied in the prior art is usually limited to only provide a baseline analysis of the left and right sides of the cranium, without further excluding interference areas (such as ventricles, cerebellum), which seriously affects ASL technology Accuracy and precision for calculating the ischemic penumbra

Method used

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  • Method for automatically calculating ischemic penumbra by using ASL of brain template
  • Method for automatically calculating ischemic penumbra by using ASL of brain template
  • Method for automatically calculating ischemic penumbra by using ASL of brain template

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Embodiment Construction

[0029] specific implementation plan

[0030] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Equivalent transformations all fall within the scope defined by the appended claims of this application.

[0031] Such as figure 1 As shown, a method for automatically calculating the ischemic penumbra using brain template ASL is characterized in that it includes the following steps:

[0032] Step 1: Register the M0 of ASL and the structural map of the standard brain to the B0 of DWI, and identify different regions of the brain through the structural map.

[0033] Step 2: Calculate ADC by DWI, and calculate the abnormal area of ​​ADC.

[0034...

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Abstract

The invention provides a method for automatically calculating ischemic penumbra by using ASL of a brain template. Compared with the prior art, the invention provides multiple contrast options (left and right sides, large and small brains and grey matter) based on ASL perfusion, and improves the accuracy of calculating ischemic penumbra.

Description

technical field [0001] The invention belongs to the field of medical images, and in particular relates to an ASL automatic calculation method for an ischemic penumbra using a brain template. Background technique [0002] Ischemic stroke is a general term for brain tissue necrosis caused by stenosis or occlusion of cerebral blood supply arteries (carotid artery and vertebral artery) and insufficient cerebral blood supply. The incidence of ischemic stroke is higher than that of hemorrhagic stroke, accounting for 70% of the total stroke. Currently, the mismatch between diffusion-weighted imaging DWI and nuclear magnetic perfusion-weighted imaging (PWI) or the mismatch between CBF and Tmax of computed tomography perfusion imaging (CTPI) is commonly used in clinic to determine the ischemic penumbra. However, these imaging techniques have certain disadvantages, invasive trauma, dependence on radioactive materials, adverse reactions. [0003] Arterial spin labeling (ASL) technolo...

Claims

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Application Information

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IPC IPC(8): A61B5/055A61B5/00G06T7/30G06T7/00
CPCA61B5/055A61B5/0042A61B5/4064G06T7/0012G06T7/30A61B2576/026G06T2207/30016G06T2207/30204
Inventor 卢洁马青峰姚泽山孟刚赵明阳
Owner 安影科技(北京)有限公司
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