Dr, Karel G. TerBrugge, MD, FRCP(C), Head, Division of Neuroradiology, UHN; Professor of Radiology & Surgery, University of Toronto. Dr. TerBrugge is describing the new state-of-the-art biplane system which takes very detailed and clear X-ray pictures. The background monitor is showing a three-dimensional rotational angiography picture of blood vessels in the brain. For more details go to my blog: http://www.mervsheppard.blogspot.com