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Abstract #1395

Hybrid Calf Magnetic Resonance Angiography Using a Time Resolved Technique

Jeremy Douglas Collins1, Philip Hodnett1, Timothy Scanlon1, Sven Zuehlsdorff2, James Carr1

1Radiology, Northwestern University, Chicago, IL, United States; 2Siemens Healthcare, MR Research and Development

Evaluation of a hybrid magnetic resonance angiography in a patient cohort using a low-dose time-resolved sequence along with a conventional bolus-chase technique. Despite a lower spatial resolution, the time-resolved sequence achieved a high accuracy for stenosis compared to the reference standard bolus-chase examination, with clear separation of the arterial and venous phases of vascular filling in 95% of patients and identification of retrograde filling. This hybrid technique enables assessment of potential target vessels with an average supplemental gadolinium dose of 0.04 mmol/kg and has become the clinical standard at our institution.