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

Table 3

Ablation comparison experiment of retrained Libra R-CNN.

Libra R–CNN	DCN	Nonlocal	Cascade detector	mAP (best)	mAP0.5 : 0.95	mAP0.5	mAP0.75	mAPs
✓				45.9	45.8	96.6	29.6	45.8
✓	✓			48.6	47.6	96.9	34.3	47.6
✓	✓	✓	✓	48.1	48.1	95.7	40.1	48.1
✓	✓	✓	✓	53.4	53.1	97.0	50.7	53.1