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Magnetic resonance temperature imaging method and device

An imaging method and magnetic resonance technology, which are used in magnetic resonance measurement, measurement using a nuclear magnetic resonance imaging system, measurement devices, etc., to achieve the effect of ensuring unbiasedness and improving accuracy

Active Publication Date: 2020-05-19
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
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Problems solved by technology

However, this technique cannot be used in tissues containing fat, so the hydrogen protons in fat are not sensitive to temperature, which makes the fat-containing tissue exhibit a nonlinear relationship with temperature changes, and this nonlinear relationship is related to the ratio of water and fat in the tissue

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  • Magnetic resonance temperature imaging method and device
  • Magnetic resonance temperature imaging method and device
  • Magnetic resonance temperature imaging method and device

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0022] The magnetic resonance temperature imaging me...

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Abstract

The invention provides a magnetic resonance temperature imaging method and device, which relate to the field of magnetic resonance. The magnetic resonance temperature imaging method and device improve the accuracy and precision of the water-fat tissue temperature image at the current moment through a two-step iterative temperature estimation algorithm. The magnetic resonance signal model includes fat multi-peaks, and the signal intensity and signal intensity are estimated at the same time. The fourth intensity amplitude of the water signal with the smallest signal intensity difference before fitting, the fourth intensity amplitude of the fat signal, the fourth field drift caused by the inhomogeneity of the main magnetic field, and the temperature image of the water and fat tissue at the current moment guarantee the temperature results unbiasedness.

Description

technical field [0001] The present invention relates to the field of magnetic resonance, in particular to a magnetic resonance temperature imaging method and device. Background technique [0002] Magnetic resonance temperature imaging can monitor the internal temperature distribution and changes of the object under test in a non-invasive, real-time and in vivo manner. Magnetic resonance can monitor temperature based on different temperature-sensitive parameters, commonly used parameters are proton density (PD), relaxation time (relaxation time), diffusion coefficient, proton resonance frequency shift (proton resonance frequency shift, PRFS). Because the proton resonance frequency in water has a linear relationship with temperature, and this linear relationship has nothing to do with tissue, the magnetic resonance temperature imaging technology based on PRFS is the most widely used. However, this technique cannot be used in tissues containing fat, so the hydrogen protons in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/01A61B5/055
CPCA61B5/055G01R33/4804G01R33/4828A61B5/015A61B5/01G01R33/50
Inventor 郑海荣刘新邹超程传力乔阳紫帖长军
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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