TABLE 3.
Anatomic Repartition and Radiation Field Coverage of 68Ga-PSMA-11 PET/CT–Positive Findings, per Patient and per Lesion
| Patients (n) |
Lesions (n) |
Volume (cm3) or size (mm) |
SUVmax |
|||||
| Lesion site | PSMA-positive | Outside CTV | PSMA-positive | Outside CTV | Median | Range | Median | Range |
| Prostate gland (T+) | 73 (100%) | 4 (5.5%) | 107 | 4 | 7.46 cm3 | 1–65 cm3 | 11.2 | 3–53 |
| Pelvic LNs (N+) | 25 (34%) | 5 (7%) | 73 | 11 | 6.0 mm | 3.0–24.0 mm | 4.6 | 1.7–58.2 |
| External iliac | 15 (20.5%) | 1 (1.5%) | 27 | 1 | 8.0 mm | 4.0–24.0 mm | 5.8 | 1.7–31.5 |
| Common iliac | 10 (13.5%) | 3 (4%) | 15 | 5 | 5.0 mm | 3.5–12.0 mm | 3.9 | 2.0–25.6 |
| Internal iliac | 9 (12.5%) | 0 (0%) | 10 | 0 | 5.0 mm | 4.0–12.0 mm | 4.9 | 1.7–11.4 |
| Obturator | 9 (12.5%) | 0 (0%) | 14 | 0 | 6.0 mm | 4.0–11.0 mm | 4.8 | 2.9–16.5 |
| Perirectal | 3 (4%) | 3 (4%) | 4 | 4 | 9 mm | 5–17.0 mm | 11.4 | 2.1–58.2 |
| Presacral | 1 (1.5%) | 1 (1.5%) | 3 | 1 | 7.0 mm | 3.0–7.0 mm | 8.9 | 3.5–16.2 |
| Extrapelvic LNs (M1a) | 4 (5.5%) | 4 (5.5%) | 27 | 27 | 4.0 mm | 3.0–7.0 mm | 4.3 | 1.7–17.2 |
| Abdominal | 3 (4%) | 3 (4%) | 13 | 13 | 4.0 mm | 3.0–7.0 mm | 4.3 | 1.7–17.2 |
| Upper diaphragm | 3 (4%) | 3 (4%) | 14 | 14 | 4.5 mm | 3.5–7.0 mm | 3.4 | 2.7–9.1 |
| Bone (M1b) | 4 (5.5%) | 4 (5.5%) | 6 | 6 | NA | 4.0 | 3.0–8.0 | |
| Lung (M1c) | 1 (1.5%) | 1 (1.5%) | 1 | 1 | 7.0 mm | 1.50 | 1.50 | |
+ = positive; NA = not applicable.
Percentages do not add up to 100 because multiple disease locations per patient were possible.