TIMI Coronary Thrombus Grade 1

**Semantic type:** Qualitative Concept

**Definition:** Possible thrombus present - angiography demonstrates characteristics such as reduced contrast density, haziness, irregular lesion contour or a smooth convex 'meniscus' at the site of total occlusion suggestive but not diagnostic of thrombus. (Gibson, C. M., de Lemos, J. A., Murphy, S. A., Marble, S. J., McCabe, C. H., Cannon, C. P., Antman, E. M., Braunwald, E. Combination therapy with abciximab reduces angiographically evident thrombus in acute myocardial infarction: a TIMI 14 substudy Circulation. 2001;103(21):2550-4.)

**Synonyms:** - CORONARY THROMBUS TIMI GRADE 1