Table 1.

Sensitivity and Specificity of Cavitary Predictive Radiology Markers

Marker	Training Seta		Test Setb
Region of interest	PET	CT	PET	CT
Area under the curve	90	115	90	115
Sensitivity, %	90	80	100	83.333
Specificity, %	78.182	72.727	76.923	76.923

Use of the PET ROI outperformed the CT ROI.

Abbreviations: CT, computed tomography; PET, positron emission tomography; ROI, regions of interest.

^a There were 10 true positive and 55 true negatives.

^b There were 6 true positives and 13 true negatives.