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A magnetic resonance imaging-based thermometry method for in-body fat

A technology for magnetic resonance imaging and body fat, which is applied in the fields of application, diagnostic recording/measurement, medical science, etc. Effectiveness of Utilization, Guaranteed Real-time and Accuracy

Active Publication Date: 2020-06-23
HANGZHOU DINOVARUIHUAMEDTECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is greatly affected by motion artifacts, the stability of the main magnetic field, etc., and because there is no abundant hydrogen bond in water-like tissue in adipose tissue, the accuracy is low, and the accuracy of temperature measurement in body fat cannot be guaranteed.
[0014] In summary, none of the tissue temperature measurement methods in the prior art can take into account the accuracy and real-time performance of in vivo measurement

Method used

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  • A magnetic resonance imaging-based thermometry method for in-body fat
  • A magnetic resonance imaging-based thermometry method for in-body fat
  • A magnetic resonance imaging-based thermometry method for in-body fat

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Embodiment Construction

[0061] The magnetic resonance imaging-based temperature measurement method for body fat of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0062] Such as figure 1 As shown, an MRI-based thermometry method for body fat, including a non-real-time parameter determination phase and a real-time temperature measurement phase, wherein:

[0063] The non-real-time parameter determination phase includes the following steps:

[0064] 1-1. In the stage of constant body temperature, several sets of {θ, S(θ)} data are obtained by scanning, where θ is the flip angle, and S(θ) is the signal strength corresponding to the flip angle θ;

[0065] 1-2. Use several sets of {θ,S(θ)} data obtained and the formula Using the least squares method to fit, calculate the equilibrium magnetization vector m 0 and the longitudinal relaxation rate R1 0 .

[0066] The number of groups of {θ,S(θ)} is selected according to the needs, the more the numb...

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Abstract

The invention discloses a temperature measuring method based on magnetic resonance imaging for in-vivo fat. The method comprises the following steps of non-real-time parameter testing phase and real-time temperature measuring phase; in the non-real-time parameter testing phase, obtaining a balance magnetizing vector and a longitudinal relaxation rate; in the real-time temperature measuring phase, scanning by a fixed scanning time and a constant turnover angle under the condition of same time interval, and calculating the temperature value corresponding to a certain time according to the scanned data and the obtained balance magnetizing vector and longitudinal relaxation rate in the non-real-time parameter testing phase. The method has the advantages that the accuracy of the existing T1 temperature measuring method based on the magnetic resonance imaging is utilized, the real-time property is improved, and the temperature measuring of in-vivo fat is quick and accurate.

Description

technical field [0001] The invention relates to the technical field of tissue temperature measurement, in particular to a magnetic resonance imaging-based temperature measurement method for body fat. Background technique [0002] Tissue temperature measurement technology is mainly used in operations or experiments that use thermal effects to affect biological tissues. The role of tissue temperature measurement is mostly to detect temperature changes and analyze thermal effects. [0003] There are many kinds of tissue temperature measurement methods: according to the impact on the tissue, it can be divided into destructive temperature measurement and non-destructive temperature measurement; according to the real-time performance of the temperature measurement method, it can be divided into real-time temperature measurement and non-real-time temperature measurement. [0004] Lossy temperature measurement is mainly used for temperature measurement of isolated tissues due to its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/055A61B5/01
Inventor 訾振军孙非
Owner HANGZHOU DINOVARUIHUAMEDTECH CO LTD
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