Accuracy of the decision tree model
| Tissue type | Sensitivity | Specificity |
| RBC clot | 92.9% (13/14) | 98.8% (249/252) |
| Fibrin clot | 80.0% (32/40) | 95.6% (216/226) |
| Mixed clot | 69.6% (16/23) | 92.2% (224/243) |
| Blood | 94.0% (109/116) | 99.3% (149/150) |
| Vessel wall | 71.2% (52/73) | 94.3% (182/193) |
The sensitivity and specificity of the decision tree model for each individual tissue type was calculated from the confusion matrix of the validation dataset.
RBC, red blood cell.