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Abstract #1319

Ultrashort TE Time-Spatial Labeling Inversion Pulse MRA for Simulated Visceral Arterial Diseases Indicated for Endovascular Interventions.

Ryuichi Mori1, Hideki Ota2, Simon TUPIN3, Tomoyoshi Kimura1, Hironobu Sasaki1, Tatsuo Nagasaka1, Takashi Nishina4, Sho Tanaka4, Yoshiaki Morita2, Yoshimori kassai4, and Kei Takase2
1Department of Radiology, Tohoku University Hospital, Sendai, Japan, 2Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan, 3Institute of Fluid Science, Tohoku University, Sendai, Japan, 4Canon Medical Systems corp., Tochigi, Japan

Visceral arterial diseases should be evaluated before and after endovascular interventions. We compared ultrashort TE (UTE) and steady-state free precession (SSFP) time-SLIP MRAs regarding their signal decay in pulsatile flow phantoms reflecting stenosis, aneurysm, and metallic stents. In all phantom models, UTE time-SLIP MRA provided superior visualization of target lumens to SSFP time-SLIP MRA. UTE time-SLIP MRA demonstrated minimal signal decay except for in-stent lumen of a stainless-steel stent. Our results indicated robustness of UTE time-SLIP MRA for intra-voxel spin dephasing caused by accelerated flow at the stenosis, turbulent flow in the aneurysm and susceptibility effects from metallic devices.

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