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Shielded gradient coils and radio frequency probes for high‐resolution imaging of rat brains
Author(s) -
Jasinski Andrzej,
Jakubowski Tomasz,
Rydzy Marek,
Morris Paul,
Smith Ian C. P.,
Kozlowski Piotr,
Saunders John K.
Publication year - 1992
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.1910240104
Subject(s) - shielded cable , radiofrequency coil , resolution (logic) , electromagnetic coil , optics , radio frequency , nuclear magnetic resonance , physics , materials science , computer science , telecommunications , quantum mechanics , artificial intelligence
A shielded gradient system and radio frequency probes for a 4.7‐T/30‐cm horizontal bore magnet are described. The systems were designed principally to obtain images and localized spectra from rat brains. The gradients can operate in either a shielded or non shielded mode. The rf probe, which combines both highest sensitivity and highest resolution, consists of a large modified saddle type transmitter and a small surface reception coil, actively decoupled using diodes. The system performance is demonstrated on phantoms and on a rat brain, where an image with in plane resolution of 80μ m and a slice thickness of 150 μm is obtained. © 1992 Academic Press, Inc.