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Abstract #3134

Flow enhanced (FEED) Arterial Spin Labeling Angiography with segmented Zero Echo Time Readout

Jianxun Qu1, Bing Wu1, and Zhenyu Zhou1

1MR Research China, GE Healthcare, Beijing, People's Republic of China

ASL based MRA with continuous labeling has the optimal label efficiency. To achieve data acquisition efficiency, a long readout train is frequently used after labeling. Flow void might appear due to the lack of tagged blood entering the imaging volume during readout. A method named hybrid ASL address this problem with additional pulsed inversion. Yet, blood inverted by pulsed ASL still experiences considerable T1 decay during readout. We propose a method termed flow enhanced ASL (FEED). Interleaved labeling modules along with segmented readout was employed. As the results show, FEED could increase the signal level without prolonging scan time.

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