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Abstract #0879

Improved Visualization of the Accelerated ASL-based Time-resolved MRA with Single Acquisition of Labeled and Control Images

Yuriko Suzuki 1 , Tetsuo Ogino 1 , James Alastair Meakin 2 , Akira Suwa 1 , Daigo Ushijima 1 , and Marc Van Cauteren 3

1 Healthcare, Philips Electronics Japan, Minato-ku, Tokyo, Japan, 2 Philips Healthcare Netherlands, Best, Netherlands, 3 Philips Healthcare Asia Pasific, Tokyo, Japan

In this work, we investigated how we further optimized the 4D-MRA sequence which halve the scan time by acquiring the labeled and control images in a single Look-Locker like multiple acquisition to counter the limitations, such as fat signal artifacts due to the chemical shift of the labeling pulse and shorter labeled bolus due to its limited labeling slab thickness, which happened due to the sequence design of this sequence. By optimizing the labeling pulse, this single acquisition technique with halved scan time could generate 4D-MRA image with quality very similar to the conventional ASL technique.

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