Table 4.

Accuracy, sensitivity, and specificity of the model according to CLAHE preprocessing (%).

	Internal test		External test
	Original image	CLAHE image	Original image	CLAHE image
Accuracy	96.2	93.1	89.8	88.1
Sensitivity	95.4	95.4	87.9	86.2
Specificity	96.9	90.8	91.7	90.0