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Abstract #0821

First-pass Coronary MR Angiography Using a Spiral-Ring Trajectory

Kie Tae Kwon 1 , R Reeve Ingle 1 , Holden H Wu 2 , William R Overall 3 , Juan M Santos 3 , Bob S Hu 4 , and Dwight G Nishimura 1

1 Electrical Engineering, Stanford University, Stanford, CA, United States, 2 Radiology, UCLA, California, United States, 3 HeartVista, Inc, California, United States, 4 Palo Alto Medical Foundation, Palo Alto, CA, United States

2D multislice interleaved spiral imaging for coronary magnetic resonance angiography (MRA) has been shown to be capable of imaging multiple slices with sub-mm in-plane resolution and high temporal resolution within a breath-hold. However, an important issue with this sequence is blood-lesion contrast. In this work, we developed a spiral-ring version of the sequence, which is aimed for first-pass coronary MRA for potentially better blood-muscle and blood-lesion contrast. The preliminary in vivo datasets demonstrated the feasibility of the spiral-ring trajectory for first-pass coronary MRA.

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