Table 2:
Diagnostic performance of CT perfusion and DCE-MR imaging in the prediction of wound failure after head and neck free flap reconstruction
| Blood Flow (mL/100 mL/min) | Blood Volume (mL/100 mL) | MTT (Sec) | tMIP | Vp | Ktrans (min−1) | Peak Enhancement | TME (Sec) | |
|---|---|---|---|---|---|---|---|---|
| Cutoff | 17.3 | 5.62 | 16.1 | 10.7 | 0.06 | 0.15 | 155 | 113 |
| Sensitivity | 1 | 1 | 1 | 1 | 1 | 0.80 | 1 | 1 |
| Specificity | 0.94 | 0.88 | 0.88 | 0.94 | 0.81 | 0.94 | 0.81 | 0.69 |
| PPV | 0.75 | 0.60 | 0.60 | 0.75 | 0.63 | 0.80 | 0.63 | 0.50 |
| NPV | 1 | 1 | 1 | 1 | 1 | 0.94 | 1 | 1 |
| Accuracy | 0.95 | 0.90 | 0.90 | 0.95 | 0.86 | 0.91 | 0.86 | 0.76 |
| AUC | 0.96 | 0.96 | 0.96 | 0.98 | 0.92 | 0.82 | 0.91 | 0.81 |
Note:—PPV indicates positive predictive value; NPV, negative predictive value; AUC, area under the curve.