Problems with luminal stenosis

Carotid Artery Stenosis

Although luminal stenosis percentage is the most commonly used clinical measure of plaque risk, it is not at all clear how to measure it in the first place, as evidenced by the two different systems adopted by the two major clinical trials in this area, ECST and NASCET. ECST determined the fractional stenosis by using the luminal diameter at the point of maximal stenosis at angiography as the numerator and the projected diameter of the artery at that same Fig. 1. Diagram showing the problems...

Leucoaraiosis and diffusion tensor studies

Infarction Right Internal Capsule

Hachinski coined the term leucoaraiosis as the hy-perintensity found on T2-weighted MR images found in the periventricular cerebral white matter 17 . While its exact pathogenesis is not fully understood it does increase with aging, and the fact that hypodensity is present on CT and hyperintensity on Fig. 9. Severe stenosis of the right carotid with alterations on the DWI. Fig. 9. Severe stenosis of the right carotid with alterations on the DWI. T2-MRI points towards a probable vascular origin,...