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Magnetic resonance radio frequency coil design method based on inversion/FDTD hybrid method

A radio frequency coil and design method technology, applied in magnetic resonance measurement, magnetic field size/direction, measurement of magnetic variables and other directions, can solve the problems of simplified inaccuracy, inversion method calculation result error, reduced coil performance, etc., to reduce dependence properties, excellent performance, and the effect of improving efficiency

Inactive Publication Date: 2018-11-09
SHANGHAI CHENGUANG MEDICAL TECH
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Problems solved by technology

However, this simplification is not accurate, due to the complex electromagnetic "coupling" effect between the B1 field and human tissue, there is a large error in the calculation results of the inversion method, which reduces the performance of the designed coil

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  • Magnetic resonance radio frequency coil design method based on inversion/FDTD hybrid method
  • Magnetic resonance radio frequency coil design method based on inversion/FDTD hybrid method
  • Magnetic resonance radio frequency coil design method based on inversion/FDTD hybrid method

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[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation will be described in detail below in conjunction with the accompanying drawings:

[0042] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 , an embodiment of the present invention, a magnetic resonance radio frequency coil design method based on the inversion / FDTD hybrid method, comprising the following steps:

[0043] S1, establish the electromagnetic model of the human body:

[0044] First, raw tomographic data of human tissue are acquired. The human tissue model is selected as the pelvic cavity tissue, and the acquisition method is to scan the pelvic cavity of a healthy adult female volunteer with 16 spiral CT to obtain two-dimensional cross-sectional images. Scanning parameter settings: period O.8s, layer thickness 5mm, interval 5mm, voltage 120kV, current 300mA, pixel size 0.70mm. The scanned result is 40 DI...

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Abstract

The invention discloses a magnetic resonance radio frequency coil design method based on an inversion / FDTD hybrid method. The inversion method and the FDTD method are organically combined through theHuygens equivalent surface so that the advantages of the inversion method and the FDTD method are absorbed and the disadvantages of the two methods are also voided. The designed coil is ensured to have excellent performance based on the hybrid method, the coil design efficiency can be greatly enhanced and the dependency on the design personnel experience can be reduced.

Description

technical field [0001] The invention relates to a magnetic resonance radio frequency coil design method based on an inversion / FDTD hybrid method, and belongs to the technical field of magnetic resonance imaging. Background technique [0002] Magnetic resonance imaging is a very important medical imaging technology, which has been widely used clinically. The radio frequency coil is an important part of the magnetic resonance imaging system. It is located at the forefront of the imaging system and receives magnetic resonance signals from the imaging area, which plays a vital role in the quality of magnetic resonance imaging. In clinical applications, the signal-to-noise ratio and imaging uniformity of magnetic resonance images are important indicators to measure the radio-frequency coil, and the distribution of the radio-frequency magnetic field (the radio-frequency magnetic field also becomes the B1 field) generated by the radio-frequency coil is related to the image signal-t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/34G01R33/24
CPCG01R33/246G01R33/34007
Inventor 何钧
Owner SHANGHAI CHENGUANG MEDICAL TECH
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