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Angle‐dependent utilization of gradient hardware for oblique MR imaging
Author(s) -
Bernstein Matt A.,
Licato Paul E.
Publication year - 1994
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1880040121
Subject(s) - oblique case , amplitude , encoding (memory) , phase (matter) , magnetic resonance imaging , physics , matrix (chemical analysis) , computer science , nuclear magnetic resonance , optics , algorithm , artificial intelligence , materials science , radiology , medicine , philosophy , linguistics , quantum mechanics , composite material
Abstract A straightforward method for calculating maximum gradient amplitudes for the frequency‐encoding, phase‐encoding, and section‐select functions in oblique magnetic resonance (MR) imaging is presented. The calculated amplitude values depend on the prescribed angulation and on which of the three functions are simultaneously active. The derived expressions are optimal in most cases, and when not optimal, they still offer substantial improvement over calculations that do not incorporate angular information. Both matrix‐based and geometric interpretations are presented.