Table 4.

Performance of T1-CE model and multi-sequence model on differentiating EGFR 19Del, 21L858R, and WT EGFR in two wises

Lesion-wise								Patient-wise
Sequence	19Del		21L858R		WT		Overall accuracy	19Del		21L858R		WT		Overall accuracy
	Accuracy	AUC	Accuracy	AUC	Accuracy	AUC		Accuracy	AUC	Accuracy	AUC	Accuracy	AUC
T1-CE	0.844 ± 0.033	0.822 ± 0.047	0.845 ± 0.032	0.839 ± 0.036	0.936 ± 0.021	0.895 ± 0.029	0.813 ± 0.036	0.861 ± 0.063	0.803 ± 0.090	0.828 ± 0.072	0.853 ± 0.063	0.966 ± 0.034	0.917 ± 0.048	0.828 ± 0.072
All	0.877 ± 0.029	0.996 ± 0.004	0.901 ± 0.028	0.971 ± 0.013	0.859 ± 0.031	1.000 ± 0.000	0.818 ± 0.035	0.899 ± 0.050	1.000 ± 0.000	0.941 ± 0.042	0.991 ± 0.009	0.908 ± 0.504	1.000 ± 0.000	0.874 ± 0.059

Data are given as point estimation ± halfwidth of the 95% confidence interval. 19 Del 19 deletion, 21L858R 21-point mutation, AUC Area under the curve, EGFR Epidermal growth factor receptor, T1-CE T1-weighted contrast-enhanced magnetic resonance imaging sequence, WT Wild-type