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Primate radio frequency coil device for clinical ultrahigh-field magnetic resonance system

A primate and radio frequency coil technology, applied in the field of primate radio frequency coil devices, can solve the problems of weakening, signal increase, and affecting imaging quality, etc., achieve less material, reduce the possibility of self-bending deformation, and improve The effect of the signal-to-noise ratio

Pending Publication Date: 2021-06-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at this time, the region of interest is not necessarily in the position with the best uniformity of the emission field. The inhomogeneity will lead to the increase or decrease of the signal in different areas of the image, which will greatly affect the quality of imaging.

Method used

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  • Primate radio frequency coil device for clinical ultrahigh-field magnetic resonance system
  • Primate radio frequency coil device for clinical ultrahigh-field magnetic resonance system
  • Primate radio frequency coil device for clinical ultrahigh-field magnetic resonance system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Figure 1 to Figure 11 In a preferred embodiment of the radio frequency coil device of the present application, it is mainly composed of an animal holder 1, three universal connecting rods 2, a receiving coil supporting shell 3, a radio frequency receiving coil, a transmitting coil supporting shell 4, a radio frequency transmitting Composed of coils, etc., of which:

[0075] The animal holder 1 is used to fix the tested animal—usually a monkey.

[0076] The receiving coil supporting shell 3 is a helmet-shaped structure adapted to the head of a primate, which has a head accommodation cavity for accommodating the head of the animal under test, and can be worn on the head of the animal under test. The coil supporting shell 3 is mainly used to support and protect the radio frequency receiving coil 4 inside.

[0077] The transmitting coil supporting shell 4 has a circular structure, and a radio frequency transmitting coil composed of only one coil unit is disposed therein....

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Abstract

The invention discloses a primate radio frequency coil device for a clinical ultrahigh-field magnetic resonance system. The primate radio frequency coil device comprises an animal fixing base for fixing an animal to be tested, a helmet-shaped receiving coil supporting shell which is connected with the animal fixing base through a universal connecting rod and can be worn on the head of the animal to be tested, a radio frequency receiving coil arranged in the receiving coil supporting shell, a transmitting coil supporting shell connected with the animal fixing base through a universal connecting rod and is of an annular structure, and a radio frequency transmitting coil arranged in the transmitting coil supporting shell. According to the primate radio frequency coil device, the positions and angles of the radio frequency transmitting coil and the radio frequency receiving coil can be easily adjusted according to needs, so that the region of interest is located at the position with the best transmitting field uniformity, the problem that the radio frequency transmitting field is not uniform in clinical ultrahigh field magnetic resonance imaging application is solved, and the accuracy of a medical image in the region of interest is effectively improved.

Description

technical field [0001] The present application relates to the field of magnetic resonance imaging, in particular to a primate radio frequency coil device used in a clinical ultra-high field magnetic resonance system. Background technique [0002] Under ultra-high-field MRI systems (greater than 3 Tesla), due to the increase in resonance frequency, the wavelength of radio frequency waves is shortened, which is similar to or smaller than the size of the imaging object, resulting in increased inhomogeneity of the emission field, which is widely Birdcage coils used for low-field excitation of magnetic resonance signals can no longer meet the requirements of uniformity of the transmission field, so it is necessary to design a transmission coil independent of the magnetic resonance system. Most of the RF coils used in ultra-high fields are usually designed with the transmitting and receiving coils integrated, that is, the receiving coil is fixed according to the region of interest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/34G01R33/28G01R33/48A61B5/055
CPCG01R33/34007G01R33/34046G01R33/34084G01R33/34092G01R33/287G01R33/4808
Inventor 张孝通高阳张怡
Owner ZHEJIANG UNIV
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