TABLE II. Descriptions of Performance Comparison Metrics.

Expression	Description
True Positive (TP)	Correct confirmation of B-lines.
True Negative (TN)	Correct discard of invisible lines
False Positive (FP)	False detection
False Negative (FN)	Missed detection
Recall	TP/(TP+FN)
Precision	TP/(TP+FP)
Specificity	TN/(TN + FP)
True Positive Rate (TPR)	Equivalent to Recall
False Positive Rate (FPR)	(1 - Specificity)
% Detection Accuracy	100(TP+TN)/(TP+FP+TN+FN)
% Missed Detection	100(FN)/(TP+FP+TN+FN)
% False Detection	100(FP)/(TP+FP+TN+FN)
	(1 + )Precision Recall/( Precision + Recall)
Positive Likelihood	Recall/(1-Specificity)
Ratio (LR+)