Table 1.

Test results of the SGD and NB classifiers for the five operators with images obtained without the contrast medium

	AUC	CA	F1	Precision	Sensitivity
	SVM / SGD	SVM / SGD	SVM / SGD	SVM / SGD	SVM / SGD
Operator 1	0.95/0.91	0.90/0.91	0.89/0.91	0.90/0.91	0.90/0.91
Operator 2	0.98/0.85	0.94/0.89	0.94/0.89	0.94/0.89	0.93/0.89
Operator 3	0.87/0.83	0.90/0.91	0.89/0.91	0.91/0.91	0.90/0.91
Operator 4	0.98/0.93	0.91/0.93	0.91/0.93	0.93/0.93	0.91/0.93
Operator 5	0.96/0.80	0.83/0.84	0.79/0.83	0.86/0.85	0.83/0.91
Mean + Standard deviation	0.95 ± 0.05/0.88 ± 0.05	0.90 ± 0.04/0.90 ± 0.04	0.88 ± 0.06/0.90 ± 0.04	0.91 ± 0.03/0.91 ± 0.03	0.89 ± 0.03/0.84 ± 0.04