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Abstract #0361

Robust Visualization of MCA Main Trunk by Improved Acceleration-Selective Arterial Spin Labeling (iAccASL) for Intracranial MR Angiography

Yuta Akamine1, Makoto Obara1, Osamu Togao2, Shuhei Shibukawa3, Masami Yoneyama1, Tomoyuki Okuaki4, and Marc Van Cauteren4

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

Improved acceleration-selective arterial spin labelling (iAccASL) was implemented for Intracranial MR angiography and images were acquired in six healthy volunteers. Additional 180„āúrefocusing pulses in control module will efficiently suppress spin dispersion and flow voids in strongly accelerating middle cerebral artery (MCA) main arteries. The vessel visualizations of MCA main trunk and peripheral vessels were compared with our previously reported AccASL and conventional time-of-flight (TOF) approach. We demonstrated iAccASL could produce better MCA main trunk visualization (without venous signal) compared with conventional AccASL technique with better peripheral visualization than TOF.

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