Table 2.
PET parameters between recurrence and non-recurrence patients
| All patients median (min-max) | Non-recurrence median (min-max) | Recurrence median (min-max) |
p-value (Kruskal–Wallis test) |
|
|---|---|---|---|---|
| SUVmax | ||||
| PET1 | 17.6 (8.3–45.7) | 17.9 (8.3–45.7) | 15.3 (9.8–27.8) | 0.966 |
| PET2 | 10.5 (4.7–34) | 10.15 (4.7–34) | 13.5 (8.2–18.3) | 0.140 |
| PET3 | 6.4 (2–15.1) | 5.6 (2–15.1) | 7.15 (3.1–11.8) | 0.284 |
| PET1-2 abs | 7.15 (-2.5–19.8) | 7.3 (-2.5–19.8) | 2.9 (-1.3–12.3) | 0.317 |
| PET1-2 % | 37 (-17–73) | 39 (-17–73) | 25 (-11–52) | 0.142 |
| PET1-3 abs | 11.45 (2.7–33.3) | 13.2 (3.4–33.3) | 7.25 (2.7–20.60) | 0.258 |
| PET1-3 % | 69 (19–87) | 72 (19–87) | 51 (28–74) | 0.085 |
| SUVmeana | ||||
| PET1 | 6.45 (3.6–11.5) | 6.6 (3.6–11.5) | 5.6 (4.4–8.8) | 0.729 |
| PET2 | 4.5 (3.1–8.5) | 4.4 (3.1–8.5) | 4.9 (3.6–6.5) | 0.089 |
| PET3 | 3.6 (1.4–5.2) | 3.4 (1.4–5.2) | 3.75 (2.2–4.5) | 0.322 |
| PET1-2 abs | 1.8 (-0.3–5.4) | 2 (0.2–5.4) | 0.8 (-0.3–3.3) | 0.125 |
| PET1-2 % | 28 (-5–57) | 30 (4–57) | 16 (-5–38) | 0.113 |
| PET1-3 abs | 3.2 (0.6–7.3) | 3.5 (1–7.3) | 2.4 (0.6–5.2) | 0.286 |
| PET1-3 % | 49 (14–76) | 51 (21–76) | 40 (14–59) | 0.145 |
| MTVa | ||||
| PET1 | 48.95 (8.6–201.9) | 49.7 (8.6–176) | 29.6 (12.1–201.9) | 0.570 |
| PET2 | 20.8 (5–243.9) | 20.7 (5–119) | 23.4 (6.2–243.9) | 0.549 |
| PET3 | 5.9 (0–127.2) | 4.05 (0–55.4) | 8.8 (0–127.2) | 0.252 |
| PET1-2 abs | 21.95 (-42–89.5) | 25.1 (-18.5–89.5) | 7.4 (-42–37.3) | 0.077 |
| PET1-2 % | 43 (-44–84) | 49 (-44–75) | 28 (-21–52) | 0.033 |
| PET1-3 abs | 36.55 (6.8–164.6) | 42.8 (10.9–164.6) | 17.6 (6.8–56.5) | 0.037 |
| PET1-3 % | 92 (25–100) | 94 (40–100) | 70 (25–100) | 0.061 |
| TLGa | ||||
| PET1 | 341.17 (30.96–1601.6) | 357.84 (30.96–1601.6) | 167.09 (58.08–1393.11) | 0.865 |
| PET2 | 100.62 (19.5–1585.35) | 95.2 (19.5–904.4) | 106.2 (22.32–15885.35) | 0.339 |
| PET3 | 20.06 (0–559.68) | 13.2 (0–232.68) | 34.38 (0–559.68) | 0.235 |
| PET1-2 abs | 213.38 (-192.24–697.2) | 225.53 (-85.3–697.2) | 49.28 (-192.24–404.3) | 0.077 |
| PET1-2 % | 59 (-36–89) | 60 (-36–87) | 35 (-14–70) | 0.053 |
| PET1-3 abs | 270.19 (34.84–1400.88) | 291.04 (58.85–1400.88) | 142.95 (34.84–539.4) | 0.223 |
| PET1-3 % | 95 (39–100) | 96 (62–100) | 81 (39–100) | 0.086 |
MTV, metabolic tumour volume; PET, positron emission tomography; PETx-y %, percentage reduction; PETx-y abs, absolute reduction; SUV, standardized uptake value; TLG, total lesion glycolysis.
a
Calculated using an SUV threshold of 2.5