Table 3:
Accuracy, sensitivity, specificity, PPV, and NPV
a
PET or ASL +
PET or SPECT +
SPECT or ASL +
Any One +
Accuracy
85.7%
71.4%
71.4%
71.4%
Sensitivity
100.0%
100.0%
66.7%
100.0%
Specificity
75.0%
50.0%
62.5%
50.0%
PPV
75.0%
60.0%
57.1%
60.0%
NPV
100.0%
100.0%
71.4%
100.0%
↵
a
Positive = 1 modality positive.