Research Article

[Retracted] A Cohort Study to Evaluate the Efficacy and Value of CT Perfusion Imaging in Patients with Metastatic Osteosarcoma after Chemotherapy

Table 5

The efficacy of chemotherapy in patients with metastatic osteosarcoma by CT perfusion imaging.

IndexArea under the curveSensitivity degree (%)Specificity (%)Youden indexCritical value95% CI

BV reduction rate0.96894.7291.310.86147.480.925~0.999
BF reduction rate0.91689.5691.310.80921.550.821~0.999

Note: BF: blood flow; BV: blood volume.