Table 3 ADCmean, absolute tumor volumes and HRS volumes before the start of radiotherapy (RT), in week 7 of RT and the relative change over course of RT separated by risk groups
Median (interquartile range) ADCmean [× 10−6 mm2/s] | High risk | Intermediate risk | Low risk | Non-oropharyngeal | ||||
|---|---|---|---|---|---|---|---|---|
GTV-P | GTV-N | GTV-P | GTV-N | GTV-P | GTV-N | GTV-P | GTV-N | |
Pretreatment | 1057 (152) | 952 (358) | 1181 (350) | 890 (309) | 1134 (354) | 1292 (1112) | 1339 (687) | 913 (364) |
Week 7 of RT | 1845 (386) | 1420 (410) | 1615 (184) | 1264 (537) | 1532 (198) | 1895 (1211) | 1987 (416) | 1352 (184) |
Median (interquartile range) volumes (cm3) | ||||||||
Pretreatment | 20.5 (41.4) | 11.7 (15.8) | 9.1 (7.7) | 3.3 (10.6) | 14.0 (17.4) | 4.6 (20.7) | 7.2 (32.4) | 6.8 (6.6) |
Week 7 of RT | 4.0 (3.0) | 5.6 (3.9) | 2.8 (1.6) | 1.5 (2.2) | 4.2 (3.8) | 3.6 (12.1) | 4.0 (24.2) | 2.1 (1.3) |
Median (interquartile range) HRS (cm3) | ||||||||
Pretreatment | 4.0 (10.7) | 1.9 (3.7) | 1.5 (3.1) | 1.3 (3.0) | 2.5 (3.3) | 1.0 (2.3) | 1.0 (13.7) | 1.3 (2.3) |
Week 7 of RTa | – | 0.8 (0.6) | 0.4 | 0.3, 0.8 | 0.2, 0.3, 0.6 | – | 0.4, 0.4 | 0.2, 0.4 |