Table 5 Testing set results for lymph node metastases; CT values compared with pathological findings
From: Computed tomography Hounsfield units can predict breast cancer metastasis to axillary lymph nodes
Mean NC-CT HU | Pathological findings | |||
|---|---|---|---|---|
Positive | Negative | Total | ||
CT† | Positive | 9 | 9 | 18 |
Negative | 1 | 21 | 22 | |
Total | 10 | 30 | 40 | |
Sensitivity 90.0%, Specificity 70.0%, PPV 50.0%, NPV 95.5%, Accuracy 75.0% | ||||
Maximum NC-CT HU | Pathological findings | |||
Positive | Negative | Total | ||
CT† | Positive | 10 | 7 | 17 |
Negative | 0 | 23 | 23 | |
Total | 10 | 30 | 40 | |
Sensitivity 100.0%, Specificity 76.7%, PPV 58.8%, NPV 100.0%, Accuracy 82.5% | ||||
Mean CE-CT HU | Pathological findings | |||
Positive | Negative | Total | ||
CT† | Positive | 7 | 13 | 20 |
Negative | 3 | 17 | 20 | |
Total | 10 | 30 | 40 | |
Sensitivity 70.0%, Specificity 56.7%, PPV 35.0%, NPV 85.0%, Accuracy 60.0% | ||||
Maximum CE-CT HU | Pathological findings | |||
Positive | Negative | Total | ||
CT† | Positive | 8 | 12 | 20 |
Negative | 2 | 18 | 20 | |
Total | 10 | 30 | 40 | |
Sensitivity 80.0%, Specificity 60.0%, PPV 40.0%, NPV 90.0%, Accuracy 65.0% | ||||