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.
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页数：2
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