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Abstract #3876

High Acceleration Quiescent-Interval Single Shot Magnetic Resonance Angiography at 1.5 and 3T

Christopher Glielmi1, Maria Carr2, Xiaoming Bi1, Peter Schmitt3, Mauricio Galizia2, 4, Judith Wood2, Robert R. Edelman4, Michael Markl2, James Carr2

1Cardiovascular MR R&D, Siemens Healthcare, Chicago, IL, United States; 2Northwestern Memorial Hospital and Northwestern University Feinberg School of Medicine, Chicago, IL, United States; 3MR Application & Workflow Development, Siemens AG, Erlangen, Germany; 4NorthShore University HealthSystem, Evanston, IL, United States

Quiescent-Interval Single Shot (QISS) is a non-contrast MRA technique with proven clinical utility as an alternative to contrast-enhanced MRA (CE-MRA) at 1.5T. 3T QISS can potentially provide improved image quality and enable higher acceleration factors. This study compares QISS at 1.5 and 3T with high acceleration factors in healthy volunteers. In addition, the diagnostic quality of QISS at 3T in patients with peripheral artery disease (PAD) was evaluated. Results show improved image quality at 3T, maintained vessel conspicuity at high acceleration factors, and clinical utility of 3T QISS in patients with peripheral artery disease.