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A continuously variable field of view surface coil
Author(s) -
Duensing R.,
Fitzsimmons J.,
Sanford D.,
Vazquez J.
Publication year - 1990
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.1910130305
Subject(s) - electromagnetic coil , stability (learning theory) , variable (mathematics) , surface (topology) , field (mathematics) , range (aeronautics) , computer science , nuclear magnetic resonance , acoustics , materials science , optics , physics , mathematics , mathematical analysis , geometry , machine learning , pure mathematics , composite material , quantum mechanics
A new type of surface coil is described which allows the user to continuously vary the size of the field of view. This utilizes a modified radiofrequency trombone for size adjustment that results in a stable frequency over a wide range of dimensions. Results show that the coil may be increased in area by as much as 60% while maintaining frequency stability to ca. 1 MHz at 63.5 MHz. Images of the human spine are presented to demonstrate the clinical utility of the new design.