Table 4.
Intraindividual change of uptake values between the two PET acquisitions in both groups, with the RLT group stratified by change in tumor burden throughout RLT. Data presented as mean change (%) with standard deviation.
| Group | n | Liver | Parotid Gland | Submandibular Gland | |||
|---|---|---|---|---|---|---|---|
| ∆SUVmean (%) | p | ∆SUVmean (%) | p | ∆SUVmean (%) | p | ||
| Control group | 54 | +3.7 ± 27.6 | 0.920 | +2.3 ± 22.1 | 0.981 | −0.1 ± 17.1 | 0.602 |
| RLT group | 85 | +7.2 ± 37.6 | 0.212 | −15.6 ± 33.3 | <0.001 | −18.8 ± 38.0 | <0.001 |
| -decrease in tumor burden | 41 | +18.6 ± 41.0 | 0.020 | −9.4 ± 35.0 | <0.001 | −10.4 ± 46.3 | 0.004 |
| -unchanged tumor burden | 24 | +4.5 ± 31.3 | 0.924 | −16.7 ± 23.7 | 0.002 | −15.5 ± 21.5 | 0.002 |
| -increase in tumor burden | 20 | −13.1 ± 28.3 | 0.043 | −26.9 ± 37.5 | 0.004 | −30.4 ± 24.5 | <0.001 |