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Digitalized method for magnetic resonance perfusion imaging

A perfusion imaging and magnetic resonance technology, applied in the field of pattern recognition, can solve the problems of arterial input function delay and diffusion sensitivity, lack of proof, etc., and achieve the effect of fast operation speed and high reliability

Inactive Publication Date: 2005-11-02
INST OF AUTOMATION CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it is sensitive to time delay and diffusion caused by the arterial input function
At present, the calculation of delay and diffusion problems in this method is based on many assumptions, and lacks rigorous proof

Method used

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  • Digitalized method for magnetic resonance perfusion imaging
  • Digitalized method for magnetic resonance perfusion imaging
  • Digitalized method for magnetic resonance perfusion imaging

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Embodiment Construction

[0024] 1. Clinical observation and display of perfusion weighted imaging (PWI) images; combination: simultaneous application and analysis of PWI and ischemic penumbra area construction, and conventional magnetic resonance imaging (T1 weighted, T2 weighted, enhanced scan ) for clinical reference;

[0025] 2. Image analysis, processing and digitization methods: First, the original dynamic magnetic resonance images are collected with magnetic resonance equipment. Secondly, apply information processing means, and if necessary, use the method of absolute quantification to realize image reconstruction for the collected images;

[0026] 3. Clinical application of the digital imaging method: the proposed digital imaging method can be used clinically to make a definite diagnosis and give corresponding treatment to the early stage of acute ischemic cerebrovascular disease, and to achieve the early recovery of such patients. Purpose. According to the analysis results of this digital im...

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Abstract

The present invention relates to mode recognition technology, and is especially digitized magnetic resonant perfusion imaging method. The digitized magnetic resonant perfusion imaging method includes automatic artery input function cutting technology, time concentration curve correcting method, and the display of perfusion imaged PWI image. The digitized magnetic resonant perfusion imaging process includes the steps of: data acquisition, time concentration calculation, Gamma fitting, SIF division, obtaining division result, deconvolution calculation, calculating CBV, calculating MTT and calculating CBF. The present invention can locate and evaluate precisely different disease focuses for cerebral vascular diseases and determine the disease focus sizes and spatial anatomic relations of disease focuses, and has important application value in medicine. Automatic method based on absolute quantizing theory with fast operation speed may be adopted. The method has high credibility, applicability and accuracy.

Description

technical field [0001] The invention relates to the technical field of pattern recognition, in particular to a digital method for magnetic resonance perfusion imaging. The invention relates to information processing technology and magnetic resonance imaging technology. The invention utilizes the principle of magnetic resonance and statistical theory to realize a method for locating and extracting lesion areas in brain function images. Background technique [0002] Prior art The magnetic resonance imaging (magnetic resonance imaging, MRI) technology originated in the 1970s, and has been widely used in the fields of medicine, geology, biology and the like after only 30 years of development. In the medical field, the advantages of MRI mainly include: (1) The imaging process is non-invasive, non-destructive, and free of electromagnetic radiation to the human body. (2) MRI can choose different parameters such as proton density, T1 and T2 imaging. Compared with X-CT, these imagi...

Claims

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Application Information

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IPC IPC(8): A61B5/055
Inventor 田捷李兴峰
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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