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Abstract #4376

Non-contrast enhanced 4D intracranial MR angiography based on pseudo-continuous arterial spin labelling (PCASL) with the keyhole technique

Makoto Obara1, Osamu Togao2, Tomoyuki Okuaki3, Shuhei Shibukawa4, Masami Yoneyama1, and Marc Van Cauteren3

1Healthcare, Philips Electronics Japan Ltd., Tokyo, Japan, 2Department of Clinical Radiology, Graduate School of Medical Science, Kyushu University, Fukuoka, Japan, 3Philips Healthcare, Tokyo, Japan, 4Department of Radiology, Tokai University Hospital, Kanagawa, Japan

A non-contrast enhanced intracranial three-dimensional dynamic magnetic resonance angiography (4D-MRA) based on pseudo-continuous arterial spin labelling with the keyhole technique (4D-PACK) was implemented. Images acquired from three volunteers were compared with the data acquired without the keyhole technique. We show that the 4D-PACK can accelerate acquisition speed, while keeping flow dynamics information.

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