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Parallel‐plate split‐conductor surface coil: Analysis and design
Author(s) -
Gonord P.,
Kan S.,
LeroyWillig A.
Publication year - 1988
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.1910060313
Subject(s) - conductor , electromagnetic coil , resonator , surface (topology) , point (geometry) , acoustics , electrical conductor , resonance (particle physics) , equivalent circuit , nuclear magnetic resonance , optics , materials science , physics , computer science , mathematics , electrical engineering , geometry , engineering , atomic physics , voltage
A split‐conductor circular parallel‐plate resonator with one end shorted to ground can be used to one's advantage as a surface coil for NMR imaging experiments. It can be easily constructed by a printed‐circuit method and possesses a relatively high loaded Q with negligible frequency detuning. From the proposed equivalent circuit, an equation was derived that relates the self‐resonance frequency of the resonator to the split distance measured from a reference point. An example of a 101‐mm‐diameter surface coil operating at 26 MHz for 34 P in vivo spectroscopy is given to illustrate the concordance between calculated and experimental results. Complementary equations and formulas are also included to assist researchers in designing their own antennas to meet specific requirements. © 1988 Academic Press, Inc.