Fig. 5From: 18F-Fluorodeoxyglucose positron emission tomography may not visualize radiation pneumonitisIntegral optical density (IOD)/area of PKM2 (a) and GLUT1 (b) in the four treatment groups: control, radiotherapy (RT)-only, lipopolysaccharide (LPS)-only, and RT+LPS groups. **P < 0.01, ***P < 0.001Back to article page