Image annotation method and system for intracranial blood flow delay

A technique for intracranial blood vessels and blood vessels, applied in the field of perfusion imaging data processing, can solve the problems of difficult to reflect the ischemic state of cerebral tissue, inaccurate calculation of time resolution, inability to simultaneously exist in perfusion imaging, etc.

Active Publication Date: 2019-10-11
脑玺(上海)智能科技有限公司
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  • Abstract
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Problems solved by technology

This method cannot coexist with dynamic cerebral perfusion imaging because it also needs to be imaged at various time points after contrast agent injection
Its low temporal resolution cannot accurately calculate the parameter maps obtained by dynamic cerebral perfusion imaging, making it difficult to reflect the ischemic state of brain tissue

Method used

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  • Image annotation method and system for intracranial blood flow delay
  • Image annotation method and system for intracranial blood flow delay
  • Image annotation method and system for intracranial blood flow delay

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Embodiment Construction

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. As used herein, "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and t...

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Abstract

The invention discloses an image labeling method for intracranial vascular flow delay, which comprises the steps of 1, performing vessel dividing and delay time calculating; 2, calculating to obtain athree-dimensional video of vascular development; 3, quantifying, to be specific dividing a low perfusion region and an infarct core region through dynamic perfusion data, finding parts in the low perfusion region, and counting to obtain an quantified value of flow delay in the low perfusion region. Intracranial vessels in the dynamic perfusion data are quantitatively labeled according to arrivaltime delay of a contrast agent based on the dynamic cranial perfusion image data of magnetic resonance or computed tomography; the delay time is subjected to color mode encoding and is subjected fusion displaying with structure images; obtained images can act as intermediate results to provide references for doctors to estimate and judge establishment degree and establishment passage of collateralcirculation. The invention also discloses an image labeling system for intracranial vascular flow delay.

Description

technical field [0001] The invention relates to a perfusion imaging data processing technology, in particular to an image labeling method for intracranial blood flow delay. The invention also relates to an image labeling system for intracranial blood flow delay. Background technique [0002] Acute or chronic occlusion of cerebral arteries makes part of the brain tissue necrotic without sufficient blood supply, thus forming ischemic stroke. After the occlusion occurs, the side branches of the vascular network in the brain are opened to supply blood to the ischemic site through the circle of Willis, ophthalmic artery, pial anastomotic branch or new blood vessel compensation. Quantitative assessment of the establishment of these collateral circulations has significant predictive value for the prognosis of patients treated with intravenous thrombolysis, endovascular therapy, and arteriovenous grafting. [0003] At present, the gold standard for imaging examination of collatera...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/055A61B6/03G06T7/00
Inventor 杨鸣李鑫丁晶汪昕方文星
Owner 脑玺(上海)智能科技有限公司
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