High-fitting helmet-type radio frequency coil device for magnetic resonance experiments of primates

A primate and radio frequency coil technology is applied in the field of radio frequency coil devices for high-fit helmet-type primate magnetic resonance experiments, which can solve the problems of inability to obtain magnetic resonance images and small operating space, and reduce material costs. , improve quality, improve the effect of 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

[0006] Under normal circumstances, the magnetic compatibility device that fixes the monkey's head is often characterized by being relatively closed and having a small operable space. Experiments using the above-mentioned device can only be equipped with a single-loop surface coil, which cannot obtain high-quality magnetic resonance images.

Method used

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  • High-fitting helmet-type radio frequency coil device for magnetic resonance experiments of primates
  • High-fitting helmet-type radio frequency coil device for magnetic resonance experiments of primates
  • High-fitting helmet-type radio frequency coil device for magnetic resonance experiments of primates

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Experimental program
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Effect test

Embodiment 1

[0085] Figure 1 to Figure 11 Shown in a preferred embodiment of the radio frequency coil device of this helmet type primate experiment of the present application, it mainly consists of animal holder 1, four universal connecting rods 2, coil support shell 3, radio frequency receiving coil 4 and The signal wires 5 etc. constitute, wherein:

[0086] The animal holder 1 is used to fix the tested animal—usually a monkey.

[0087] The coil supporting shell 3 is a helmet-shaped structure adapted to the head of a primate, which has a head accommodation chamber for accommodating the head of the animal to be measured, and can be worn on the head of the animal to be measured, so as to The radio frequency receiving coil 4 acquires the brain image of the tested animal. The coil supporting shell 3 is mainly used to support and protect the radio frequency receiving coil 4 inside.

[0088] The radio frequency receiving coil 4 is fixed inside the coil supporting shell 3, which is the core ...

Embodiment 2

[0134] Figure 12 and Figure 13 Another specific embodiment of the helmet-type primate experimental radio frequency coil device of the present application is shown. The structure of the coil device is basically the same as that of the coil device in Embodiment 1, and the main difference is only:

[0135] The radio frequency receiving coil 4 in the coil supporting shell 3 is only composed of 6 coil units. Because the imaging quality of these 6 coil units is inferior to that of the 16 coil unit radio frequency receiving coils in Embodiment 1, and there is no special bright spot compared to the distribution of the 6 coil units in Embodiment 1, so it will not be repeated here. .

[0136] There are only two rod clamps 105, which are connected with two guide rods 101 respectively. Correspondingly, only two universal connecting rods 4 are configured.

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Abstract

The invention discloses a high-fitting helmet-type radio frequency coil device for an magnetic resonance experiment of primates. The high-fitting helmet-type radio frequency coil device comprises an animal fixing base used for fixing a tested animal, a helmet-type coil supporting shell connected with the animal fixing base through a universal connecting rod and capable of being worn on the head of the tested animal, a radio frequency receiving coil arranged in the coil supporting shell, and a signal lead wire which is in circuit connection with the radio frequency receiving coil and extends out of the coil supporting shell. No matter at what angle the head of the tested animal is fixed, the radio frequency receiving coil in the device can be arranged close to the scalp of the tested animal, so that the signal-to-noise ratio and the magnetic resonance imaging quality of signal induction receiving are improved.

Description

technical field [0001] The present application relates to the field of magnetic resonance imaging, in particular to a high-fitting helmet-shaped primate magnetic resonance experimental radio frequency coil device. Background technique [0002] As a truly non-invasive imaging technology, magnetic resonance imaging technology is widely used in brain science and brain disease research. Its basic principle is that under the action of the main magnetic field (external magnetic field), some protons (including hydrogen protons in the human body) that precess around the main magnetic field (external magnetic field) will precess under the action of short-term radio frequency waves. When the radio frequency wave stops, those protons will gradually return to their original state, and at the same time release a radio frequency signal with the same frequency as the excitation wave, and the nuclear magnetic resonance phenomenon will occur. Magnetic resonance imaging technology uses this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/34G01R33/28G01R33/48A61B5/055
CPCA61B5/055G01R33/28G01R33/287G01R33/34G01R33/34007G01R33/34046G01R33/34084G01R33/34092G01R33/48G01R33/4808
Inventor 张孝通全枝艳屈淑娴
Owner ZHEJIANG UNIV
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