Hybrid Calf Magnetic Resonance Angiography Using a Time Resolved Technique

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

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.