Cerebral Arterial Stenosis Detection Based on a Retained Two-Stage Detection Algorithm

Table 2

Ablation comparison experiment of retrained Faster R-CNN.

Faster R-CNN	Dcn	Nonlocal	Cascade detector	mAPbest	mAP0.5 : 0.95	mAP0.5	mAP0.75	mAPs
✓				45.7	45.2	94.0	29.6	45.2
✓	✓			46.3	46.1	96.9	35.3	46.1
✓	✓	✓	✓	47.3	47.2	95.9	37.7	47.2
✓	✓	✓	✓	53.0	52.5	97.1	45.7	52.5