Table 2.

Diagnostic performance of the CNN system in differentiating GISTs from leiomyomas in the training and validation dataset

Diagnosis	Sensitivity, %	Specificity, %	PPV, %	NPV, %	Accuracy, %
Training dataset	99.5 (99.4–99.8)	99.5 (99.4–99.8)	99.5 (99.4–99.6)	99.5 (99.4–99.6)	99.5 (99.4–99.9)
Validation dataset	92.0 (88.5–94.8)	64.3 (51.9–75.4)	92.0 (89.4–94.1)	64.3 (54.3–73.2)	86.9 (83.2–90.2)

Values in parentheses are 95% CIs. CNN, convolutional neural network; GIST, gastrointestinal stromal tumor; NPV, negative predictive value; PPV, positive predictive value; CI, confidence interval.