Apologies to Dr. Sclafani for linking a word document (which was not meant to be put online), rather than his peer-reviewed publication. My bad! Here is the correct information:
Sclafani SJA: Intravascular Ultrasound in the Diagnosis and Treatment of Chronic Cerebrospinal Venous Insufficiency. Techniques in Vascular & Interventional Radiology 15: 131-143, 2012. http://www.ncbi.nlm.nih.gov/pubmed/22640502


Intravascular ultrasound in the diag... [Tech Vasc Interv Radiol. 2012] - PubMed - NCBI
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