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. Author manuscript; available in PMC: 2009 Dec 1.
Published in final edited form as: Stroke. 2008 Sep 4;39(12):3231–3235. doi: 10.1161/STROKEAHA.108.521054

Figure.

Figure

Modified TIMI grading scale for thrombus grade. Grade 0 is no angiographic characteristic suggestive of thrombus; grade 1, possible thrombus present, with angiographic characteristics such as irregular lesion contour or presence of smooth meniscus; grade 2, small thrombus present, with greatest linear dimension less than half of the vessel diameter; grade 3, moderate thrombus present, with greatest linear dimension more than half, but less than 2, vessel diameters; and grade 4, large thrombus present, with greatest dimensions of 2 or more vessel diameters.