2018 AANS Annual Scientific Meeting-603. Reduction in Radiation and Contrast Dose Using Time-Resolved MRA prior to Angiography for Diagnosis of Spinal Dural Arteriovenous Fistulae

603. Reduction in Radiation and Contrast Dose Using Time-Resolved MRA prior to Angiography for Diagnosis of Spinal Dural Arteriovenous Fistulae

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Video Summary

Dr. Alex Witek presents a protocol using time-resolved MR angiography (MRA) as an adjunct to catheter angiography for diagnosing dural arteriovenous fistulas (dural AVF) in spinal angio. The protocol involves rapidly acquired images combined with contrast enhancement and digital subtraction to create 3D volumes. The study compared patients who underwent MRA prior to catheter angiography to a control group. Results showed that MRA led to lower radiation doses, reduced contrast volumes, and fewer injections. However, there were limitations to the study, including a small and retrospective sample size and a limited field of view. Further research is needed to determine the full role of time-resolved MRA in diagnosis and treatment.

Asset Caption

Alex M. Witek, MD

Keywords

Dr. Alex Witek

time-resolved MR angiography

dural arteriovenous fistulas

spinal angio

catheter angiography