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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