A FAST GRADIENT-RECALLED MRI TECHNIQUE WITH INCREASED SENSITIVITY TO DYNAMIC SUSCEPTIBILITY EFFECTS

A fast imaging method that is based on gradient‐recalled echoes of spins whose excitation and echo formation are separated by more than one TR period is presented. This method does not incorporate chemical‐shift refocusing and thus results in drastically increased sensitivity to dynamic susceptibility erects, while maintaining a short total imaging time. The efficiency of the new technique is demonstrated in dynamic contrast‐enhanced experiments (bolus tracking) in the cat brain using a duration of 600 ms for each image. Blood volume maps are derived with expected contrast between white and gray matter. Copyright © 1992 Wiley‐Liss, Inc., A Wiley Company