PET PSMA | | | |
Visually positive lesions (n) | 2 (40) | 15 (62) | 0.94 |
Median lesion SUVmean
| 2.3 (IQR, 2.2–2.7) | 6.8 (IQR, 4.2–10.1) | 0.009*
|
Median lesion SUVmax
| 3.8 (IQR, 3.3–4.5) | 9.4 (IQR, 5.4–15.8) | 0.015*
|
Median L:B SUVmean
| 0.36 (IQR, 0.34–0.52) | 1.18 (IQR, 0.67–1.73) | 0.01*
|
Median perfusion coefficient (K
1, mL/cm/min) | 1 (IQR, 0.38–1.5) | 0.4 (IQR, 0.24–0.75) | 0.2 |
Median washout coefficient (K
2, L/min) | 0.7 (IQR, 0.47–0.88) | 0.18 (IQR, 0.1–0.24) | 0.02*
|
PSMA immunohistochemistry | | | |
Any PSMA staining (n) | 2 (40) | 20 (83) | 0.04*
|
Vascular endothelial staining (n) | 0 | 17 (71) | 0.004*
|
Cytoplasmatic staining (n) | 2 (40) | 7 (29) | 0.6 |
Staining intensity† (n) | | | 0.65 |
Absent | 3 (60) | 4 (16) | |
Weak | 0 | 16 (67) | |
Moderate | 0 | 3 (13) | |
Strong | 2 (40) | 1 (4) | |