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Abstract #1128

Assessment of Arterial Supply to Arteriovenous Malformations with Vessel-Encoded Arterial Spin Labeling Dynamic Angiography

Thomas W. Okell1, Meritxell Garcia2, Michael A. Chappell, 13, James V. Byrne4, Peter Jezzard1

1FMRIB Centre, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom; 2Division of Diagnostic & Interventional Neuroradiology, Department of Radiology & Nuclear Medicine, University of Basel Hospital, Basel, Switzerland; 3IBME, Department of Engineering, University of Oxford, Oxford, United Kingdom; 4Nuffield Department of Surgery, University of Oxford, Oxford, United Kingdom

Arteriovenous malformations (AVMs) can be treated by endovascular embolization, but it is crucial to have knowledge of the arterial supply to the lesion prior to treatment. In this study we applied a 2D dynamic angiographic technique based on vessel-encoded pseudocontinuous arterial spin labeling (VEPCASL) to non-invasively visualize the flow patterns arising from the main feeding arteries to AVMs. Each transverse, coronal and sagittal time-resolved data set took about four minutes to acquire. Good image quality and vessel-selectivity was observed in all five patients. We hope this will become a useful tool for treatment planning in AVM patients.