Table 2.
Comparisons of PET parameters according to the biomarker status
| Number of patients | SUVmax | SUVmean | PET parameters* | |||
|---|---|---|---|---|---|---|
| RImax (%) | RImean (%) | MTV (mL) | ||||
| All patients | 55 | 7.9 (5.7–11.5) | 3.4 (2.8–4.7) | 16.0 (8.3–24.1) | 11.7 (7.0–18.0) | 20.1 (9.2–44.0) |
| ER | ||||||
| Positive | 30 | 7.2 (3.5–11.1) | 3.1 (2.5–4.5) | 15.5 (8.0–25.4) | 9.9 (5.5–15.3) | 17.4 (6.3–36.3) |
| Negative | 25 | 9.0 (6.5–12.3) | 3.6 (3.1–4.8) | 16.2 (8.7–21.7) | 16.2 (10.8–21.0) | 33.8 (16.3–51.8) |
| p value | 0.090 | 0.099 | 0.839 | 0.012 | 0.031 | |
| PR | ||||||
| Positive | 43 | 7.9 (5.3–12.8) | 3.4 (2.6–5.2) | 15.5 (4.8–25.3) | 11.3 (5.9–18.0) | 20.2 (10.9–47.7) |
| Negative | 12 | 8.2 (6.4–9.4) | 3.7 (3.2–4.4) | 16.4 (14.5–20.8) | 14.5 (10.6–17.5) | 19.0 (8.8–35.9) |
| p value | 0.744 | 0.863 | 0.313 | 0.343 | 0.501 | |
| HER-2 | ||||||
| Positive | 21 | 9.5 (6.4–11.9) | 4.1 (3.1–4.7) | 16.3 (11.1–20.8) | 16.1 (10.7–21.6) | 24.9 (8.8–47.9) |
| Negative | 34 | 7.2 (5.1–11.1) | 3.3 (2.6–4.7) | 15.5 (4.3–25.0) | 10.5 (5.5–16.1) | 19.0 (10.6–40.9) |
| p value | 0.279 | 0.396 | 0.456 | 0.031 | 0.795 | |
*PET parameters are presented as median values (interquartile range)