Fig. 6From: 18F-Fluorodeoxyglucose positron emission tomography may not visualize radiation pneumonitisPlasma concentrations of lactate (a) and pyruvate (b) in the four treatment groups: control, radiotherapy (RT)-only, lipopolysaccharide (LPS)-only, and RT+LPS groups. *P < 0.05, **P < 0.01Back to article page