Table 3.
Uptake values to reference organs in the RLT group, stratified by baseline tumor burden compared to the control group. Data presented as mean with standard deviation. CO: control; Ratio P/L: ratio of parotid to liver uptake. * PET1, † pre RLT PET.
| Group | n | Liver | Parotid Gland | Submandibular Gland | Ratio P/L | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| SUVmean | ∆ (%) vs. CO | p | SUVmean | ∆ (%) vs. CO | p | SUVmean | ∆ (%) vs. CO | p | |||
| Control group * | 54 | 4.9 ± 1.4 | - | 10.7 ± 3.2 | 11.3 ± 2.8 | 2.2 | |||||
| RLT group † | |||||||||||
| -oligofocal | 28 | 4.6 ± 1.0 | −5.9 | 0.763 | 10.1 ± 3.1 | −5.7 | 0.831 | 11.5 ± 3.0 | 1.8 | 0.996 | 2.2 |
| -multifocal | 24 | 4.5 ± 1.2 | −6.7 | 0.704 | 7.8 ± 2.0 | −27.1 | <0.001 | 9.1 ± 2.8 | −19.5 | 0.007 | 1.7 |
| -disseminated | 20 | 4.1 ± 1.1 | −15.1 | 0.088 | 8.6 ± 3.3 | −20.1 | 0.022 | 8.3 ± 2.5 | −26.3 | <0.001 | 2.1 |
| -diffuse | 13 | 3.4 ± 1.3 | −30.4 | 0.001 | 4.7 ± 3.0 | −55.8 | <0.001 | 6.1 ± 3.1 | −45.6 | <0.001 | 1.4 |