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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