Development of a predictive scale for cardioembolic stroke using extracted thrombi and angiographic findings.

•Platelet distribution patterns of thrombi are different according to the types.•Fraction rates of RBCs, fibrins, and platelets forming clots had no differences.•New scale of the BOCS2 to predict cardiogenic stroke was developed.•Predictive scale for cardioembolism using thrombi and interventional angiography.