Table 5. Correlation between Semi-Quantitatively Parameters of PET/CT and Ki67 Scores for Histological Subtypes.
| Characteristics | Ki67 (Median, Range) | Correlation with Ki67* | ||
|---|---|---|---|---|
| SUVmax | BSV | BSL | ||
| AIS | 4.8 (1–10) | 0.818 (0.002) | 0.131 (0.670) | 0.229 (0.452) |
| MIA | 7.8 (5–20) | -0.281 (0.465) | -0.205 (0.568) | -0.115 (0.768) |
| Lepidic | 10.0 (2–30) | 0.360 (0.014) | 0.401 (0.006) | 0.459 (0.001) |
| Acinar | 19.4 (1–88) | 0.481 (< 0.001) | 0.296 (0.007) | 0.584 (< 0.001) |
| Papillary | 9.4 (2–30) | 0.778 (< 0.001) | -0.393 (0.087) | -0.215 (0.362) |
| Micropapillary + solid | 16.3 (2–30) | 0.361 (0.024) | -0.366 (0.163) | 0.073 (0.788) |
| Variants | 20.1 (2–80) | 0.440 (0.015) | 0.527 (0.003) | 0.577 (0.001) |
| All | 18.2 (1–88) | 0.529 (< 0.001) | 0.375 (< 0.001) | 0.474 (< 0.001) |
*Data are Spearman correlation coefficients with the corresponding p values in parentheses. AIS = adenocarcinoma in situ, BSL = background subtracted lesion activity, BSV = background subtracted volume, MIA = minimally invasive adenocarcinoma, SUVmax = maximum standardized uptake value