Fig. 3
From: 18F-FDG PET/CT predicts acute exacerbation in idiopathic pulmonary fibrosis after thoracic surgery
The receiver operating characteristic and Kaplan Meier’s survival curves of SUVs for acute exacerbation in patients with IPF. A Receiver operating characteristic curve of SUVRTF for AE. B Comparison of AE free survival curves between patients with values above and below the best cut-off value of the SUVRTF. C Receiver operating characteristic curve of SUVmeanTF for predicting AE. D Comparison of AE free survival curves between patients with values above and below the best cut-off value of the SUVmeanTF. Differences between the two groups were assessed using the log rank test. IPF, idiopathic pulmonary fibrosis; AE, acute exacerbation; SUVmeanTF, tissue fraction-corrected mean standardized uptake; SUVRTF, tissue fraction-corrected standardized uptake value ratio