Measurements of the radiofrequency field in magnetic resonance coils

被引：2

作者：

Fakri-Bouchet, L ^{[1
]}

Lapray, C ^{[1
]}

Briguet, A ^{[1
]}

机构：

[1] Univ Lyon 1, CNRS, CPE, UPRESA 5012,Lab RMN, F-69622 Villeurbanne, France

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 1998年 / 9卷 / 09期

关键词：

magnetic resonance antennae; resonators; MRI/rf coils; radiofrequency field distribution uniformity; field experimental evaluation; field mapping; laboratory measurement system;

D O I：

10.1088/0957-0233/9/9/040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This design note describes an inexpensive system used to control the radiofrequency field generated by magnetic resonance coils. The device is built around three main modules, a sequencer, a modulator and a phase-sensitive detector. This system permits one to detect the radiofrequency field at each point of the region of interest using a pick-up coil, without the requirement of a magnetic resonance spectrometer. Examples of radiofrequency field distributions obtained at 85 MHz are given.

引用

页码：1641 / 1646

页数：6

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