S11

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Non-gated and non-enhanced MR Angiography of the Hand using enhanced acceleration selective arterial spin labeling (eAccASL)

Misaki Saito¹, Shuhei Shibukawa¹, Natsuo Konta¹, Takuya Hara², Takakiyo Nomura², Makoto Obara³, Isao Muro¹, and Tetsu Niwa²
¹radiological technology, Tokai university hospital, Isehara, Japan, ²Tokai University School of Medicine, Isehara, Japan, ³Philips Japan, Tokyo, Japan

This study was conducted in order to optimize the enhanced Acceleration-Selective Arterial Spin Labeling (eAccASL) for visibility of hand MRA without ECG-gating and contrast agent. When the acceleration encoding is optimized, eAccASL enables to obtain non-gated MRA of the hand.

Fig.2: The example images of two volunteers. The quality differences were observed in the images of each subject. Although increasing AENC value could suppress blood flow signals with smaller accelerations, some arteries were also suppressed when volunteers with low Vpp.