Table 1.
Pre-chemoradiotherapy (CRT), post-CRT and relative change (%Δ) in 18F-fluorodeoxyglucose positron emission tomography (FDG-PET)-derived parameters
| Parameter | Pre-CRT Median (range) |
Post-CRT Median (range) |
%Δ Median (range) |
Significance P value (Wilcoxon signed ranks test) |
|---|---|---|---|---|
| SUVmax | 7.6 (2.6 to 15.6) | 3.8 (1.6 to 7.9) | −44.2 (97.6 to −80.9) | 0.002 |
| SUVpeak | 6.3 (2.0 to 13.5) | 3.1 (1.6 to 6.1) | −41.4 (51.3 to −83.3) | 0.001 |
| SUVmean | 3.0 (1.6 to 5.6) | 1.9 (1.1 to 3.3) | –35.1 (8.6 to –67.0) | <0.001 |
| SUVmedian | 2.7 (1.6 to 5.2) | 1.8 (1.1 to 2.8) | −33.5 (2.4 to −68.3) | <0.001 |
| TLG | 83.3 (16.8 to 208.0) | 36.0 (8.8 to 167.5) | −46.5 (4.0 to −93.3) | <0.001 |
SUV, standardised uptake value; TLG, total lesion glycolysis.