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Dual-band radio frequency surface coil

A surface coil and radio frequency technology, which is applied in magnetic resonance measurement and other directions, can solve the problem of low signal-to-noise ratio of dual-frequency radio frequency surface coils, achieve the effects of improving coupling problems, clear positioning images, and improving signal-to-noise ratio

Active Publication Date: 2013-04-10
ALLTECH MEDICAL SYST
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a dual-frequency radio-frequency surface coil in order to solve the shortcoming that the signal-to-noise ratio of the dual-frequency radio-frequency surface coil is not high in the current magnetic resonance system.

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  • Dual-band radio frequency surface coil

Examples

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Embodiment

[0014] In this example, the 7T NMR 1 H and 31 P as an example, its circuit block diagram is as follows image 3 .

[0015] First, the dual-frequency RF surface coil includes an inner coil and an outer coil. The inner coil includes two corresponding parallel resonances (respectively composed of capacitor ten C10 and inductor ten L10, capacitor eleven C11 and inductor eleven L11), and the outer The coil includes capacitor four C4, capacitor five C5, capacitor six C6, capacitor seven C7, capacitor eight C8, capacitor nine C9, inductor eight L8, inductor nine L9, two microstrip lines W made of copper foil, two The ground wires made of copper foil wider than the microstrip line are ground wire 1 GND1 and ground wire 2 GND2, wherein the microstrip wire W is located above the ground wire 1 GND1 and the ground wire 2 GND2, and the microstrip wire W and the ground wire 2 are There is a Teflon dielectric interlayer with a certain thickness between the first ground GND1 and the second...

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Abstract

The invention relates to magnetic resonance technology, resolves the problem that the signal to noise ratio of a dual-band radio frequency surface coil in an existing magnetic resonance system is not high, and provides a dual-band radio frequency surface coil. The technical scheme of the dual-band radio frequency surface coil includes that an outer-circle coil does not utilize conventional lumped circuit design, but utilizes microstrip antenna design, and thoroughgoing decoupling between an inner-circle coil and the outer-circle coil is achieved. The dual-band radio frequency surface coil has the advantages of being high in signal-to-noise ratio of the outer circle, and suitable for nuclear magnetic resonance.

Description

technical field [0001] The invention relates to magnetic resonance technology, in particular to the technology of dual-frequency radio frequency surface coils on nuclear magnetic resonance. Background technique [0002] With the development of magnetic resonance technology, in addition to the conventional imaging scanning of hydrogen nuclei, for other few nuclei such as 31 P, 13 C, 23 The research of Na et al., especially the magnetic resonance spectroscopy (MRS) is more and more used in the research of human metabolic diseases. Among them 31 More studies on P spectrum are mainly used for early detection of ischemic heart disease and cancer. At present, spectrum technology is mainly used in high-field systems (3T, 4.7T, 9T and even higher). These multi-core applications require RF coils capable of operating simultaneously at the resonant frequencies of both nuclei. There are currently two ways to design the dual-frequency surface coil of the high-field magnetic resonan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/36
Inventor 邹学明郜发宝王子溶张巍巍
Owner ALLTECH MEDICAL SYST
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