Abstract #4720

Scheme optimization for inflow and outflow visualization in non-contrast enhanced dynamic MRA based on pseudo-continuous arterial spin labeling

Makoto Obara¹, Osamu Togao², Noriyuki Fujima³, Shuhei Shibukawa⁴, Masami Yoneyama¹, Tomoyuki Okuaki⁵, Msanobu Nakamura¹, and Marc Van Cauteren⁵

¹Philips Electronics Japan, Tokyo, Japan, ²Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan, ³Department of Radiology, Hokkaido University Hospital, Hokkaido, Japan, ⁴Department of Radiology, Tokai University Hospital, Kanagawa, Japan, ⁵Asia Pacific, Philips Healthcare, Tokyo, Japan

A new scheme for non-contrast enhanced intracranial three-dimensional dynamic magnetic resonance angiography (4D-MRA) using pseudo-continuous arterial spin labeling (4D-PCASL) is proposed for visualizing inflow and outflow dynamics. The 4D-PCASL procedure was accelerated with contrast-enhanced timing-robust angiography (CENTRA)-Keyhole and the view-sharing techniques (4D-PACK). Images acquired from four volunteers were compared between the 4D-PCASL and 4D-PACK approaches. We show that this new scheme accelerates data acquisition and provides dynamic inflow and outflow information.

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