Yuriko Suzuki1, Noriyuki Fujima2, Hiroyuki Sugimori2, Tetsuo Ogino1, Marc Van Cauteren3
1Philips Electronics Japan, Minato-ku, Tokyo, Japan; 2Hokkaido University Hospital, Sapporo, Hokkaido, Japan; 3Philips Healthcare Asia Pacific, Minato-ku, Tokyo, Japan
Hemodynamic information is useful for the accurate diagnosis, effective treatment and follow-up for numerous neurovascular diseases. Recently developed non-contrast-enhanced time-resolved 4D MRA using arterial spin labeling (ASL) methods achieve both high spatial and temporal resolution with 3D coverage. However, these methods require labeled and control images to make the subtracted image, doubling the scan time. We present a new non-contrast-enhanced time-resolved 4D MRA, in which contrast and labeled images are acquired in a single Look-Locker like acquisition, making scan time half compared to the conventional ASL method.