Time-resolved Three-dimensional Pulmonary MR Angiography Using a Spiral-TRICKS sequence
Du J, Bydder M, Bydder G, Znamirowski R, Rose S
University of California, San Diego
Evaluation of the pulmonary circulation is important in the assessment of many disease processes such as pulmonary embolism, hypertension and vascular anomalies. Time-resolved contrast enhanced MR angiography provides the contrast dynamics in pulmonary vasculature, thus very useful for perfusion and angiography study. The short arterial-venous transit time requires fast dynamic imaging sequences. Here we present a hybrid 3D spiral sequence which combines a spiral readout trajectory in-plane and Cartesian slice encoding through-plane in a TRICKS scheme, thereby providing both high spatial resolution and high temporal resolution.