Table 4.

Performance characteristics of the Mask Regions with Convolutional Neural Networks (Mask R-CNN) machine learning annotations (MLA) based on a focused subset MLA analysis.

		Pneumothorax mask R-CNN Model	Chest tube mask R-CNN Model
PR values based on bounding box with IOU > 50%	mAP	0.46	0.77
	Sensitivity	0.47	0.77
PR values based on generated mask	Precision	0.22	0.46
	Sensitivity	0.87	0.76
	Specificity	0.35	0.78
	TP	0.15	0.15
	FP	0.53	0.18
	FN	0.29	0.62
	TN	0.02	0.05