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Application of Single‐Shot Spiral Scanning for Volume Localization
Author(s) -
Ra J. B.,
Rim C. Y.,
Cho Z. H.
Publication year - 1991
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.1910170214
Subject(s) - spiral (railway) , imaging phantom , signal (programming language) , volume (thermodynamics) , attenuation , nuclear magnetic resonance , single shot , physics , optics , electromagnetic coil , materials science , computer science , mathematics , mathematical analysis , quantum mechanics , programming language
A new technique using a spiral scan single‐shot RF pulse for localized volume selection has been developed and its experimental results are presented. This technique employs an additional radial‐gradient coil in conjunction with the oscillating gradients for the spiral scan to localize the 3D volume. The short selection time in this technique minimizes both signal contamination from unwanted regions and signal attenuation due to T 2 decay. We provide both the theoretical background of the technique and the experimental results obtained from a phantom as well as a human volunteer. The proposed method appears simple and accurate in localizing a volume which would be used as either fast imaging or localized Spectroscopy. © 1991 Academic Press, Inc.