Abstract #4121

Clinical Evaluation of TOF-MRA with Sparse Undersampling and Iterative Reconstruction (Sparse TOF) for Cerebral Aneurysms.

Yasutaka Fushimi¹, Tomohisa Okada^1,2, Akira Yamamoto¹, Takayuki Yamamoto¹, Aurelien Stalder³, Michaela Schmidt³, Yutaka Natsuaki³, and Kaori Togashi¹

¹Kyoto University Graduate School of Medicine, Kyoto, Japan, ²Human Brain Research Center, Kyoto University Graduate School of Medicine, Kyoto, Japan, ³Siemens, Erlangen, Germany

Sparse TOF has demonstrated the potential to accelerate TOF MRA. We conducted comparison study targeting patients with cerebral aneurysms to check the clinical relevance of evaluation of aneurysms on Sparse TOF 3X, 5X and TOF with parallel imaging (PI TOF). MIP images of patients with cerebral aneurysms were blindly evaluated by one neuroradiologist, and the sum of grades were compared among Sprase TOF 3X, 5X and PI-TOF 3X. Sparse TOF 3X and 5X were reconstructed with clinically acceptable time, and cerebral aneurysms were visible in both Sparse TOF 3X and 5X with equivalent quality as PI TOF.

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