ANGLE-DEPENDENT UTILIZATION OF GRADIENT HARDWARE FOR OBLIQUE MR-IMAGING

A straightforward method for calculating maximum gradient amplitudes f or the frequency-encoding, phase-encoding, and section-select function s in oblique magnetic resonance (MR) imaging is presented. The calcula ted amplitude values depend on the prescribed angulation and on which of the three functions arc simultaneously active. The derived expressi ons are optimal in most cases, and when not optimal, they still offer substantial improvement over calculations that do not incorporate angu lar information. Both matrix-based and geometric interpretations are p resented.