1. First-pass contrast-enhanced MRA can clearly demonstrate the early venous filling and thereby confirm the presence of a shunt in equivocal cases.
First-pass contrast-enhanced MRA can clearly demonstrate the early venous filling and thereby confirm the presence of a shunt in equivocal cases. A and B, On T2-weighted scans (A), the perimedullary flow voids indicate an SDAVF, which is confirmed on coronal spinal MRA (B). C, In addition, as indicated in this patient, MRA helps to demonstrate the level of the shunt, thereby directing the subsequent spinal DSA.
T. Krings, and S. Geibprasert AJNR Am J Neuroradiol 2009;30:
©2009 by American Society of Neuroradiology