AN ACTIVE TRANSMIT/RECEIVE NMR MAGNETOMETER FOR FIELD MONITORING IN ULTRA HIGH FIELD MRI SCANNERS

被引：1

作者：

Handwerker, J. ^{[1
]}

Bonehi, V ^{[1
]}

Eschelbach, M. ^{[2
]}

Scheffler, K. ^{[2
,3
]}

Ortmanns, M. ^{[1
]}

Anders, J. ^{[1
]}

机构：

[1] Univ Ulm, Inst Microelect, Ulm, Germany

[2] Max Planck Inst Biol Cybernet, High Field MR Ctr, Tubingen, Germany

[3] Univ Tubingen, Dept Biomed Magnet Resonance, Tubingen, Germany

来源：

BIOMEDICAL ENGINEERING-BIOMEDIZINISCHE TECHNIK | 2013年 / 58卷

关键词：

NMR magnetometry; ultra high field MRI; gradient field monitoring; active NMR field probes;

D O I：

10.1515/bmt-2013-4263

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

We present a miniaturized active nuclear magnetic resonance (NMR) magnetometer consisting of a susceptibility matched field probe and a PCB based RF transceiver. Thanks to its transmit-receive (TX/RX) capabilities, the system can be used to monitor the spatio-temporal field evolution during a magnetic resonance imaging (MRI) scan and thereby allows for a correction of gradient field imperfections to improve image quality. The magnetometer can be tuned for magnetic fields ranging from 7 T to 15.5 T and achieves a resolution of 14.8 nT measured in a 9.4 T whole body scanner.

引用

页数：2

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