Table 3 Mean perirectal distances (mm) on the T2-weighted MRI before (A, n = 13), and after SpaceOAR hydrogel (B, n = 18 patients). Mean change (Δ) in perirectal distances (C, n = 13)
| Â | Left | Midline | Right | ||||
|---|---|---|---|---|---|---|---|
2Â cm | 1Â cm | 0 | 1Â cm | 2Â cm | |||
A | Superior (base) | + 2 cm | 12 | 9.1 | 11.7 | 10 | 14.3 |
+ 1 cm | 12.8 | 8.2 | 5.8 | 6.8 | 10.8 | ||
Midgland | 0 | 8.3 | 3 | 1 | 2.5 | 6.5 | |
Inferior (apex) | −1 cm | 6.5 | 1.8 | 0.6 | 2 | 7.6 | |
−2 cm |  | 3 | 1.5 | 5 |  | ||
B | Superior (base) | + 2 cm | 15 | 13.6 | 14.6 | 12.2 | 16.2 |
+ 1 cm | 13.7 | 11.8 | 10.9 | 10.9 | 12 | ||
Midgland | 0 | 7.4 | 9.7 | 10.3 | 9.6 | 7 | |
Inferior (apex) | −1 cm | 7 | 8.7 | 10.3 | 9.2 | 10.6 | |
−2 cm |  | 8.1 | 7.3 | 6.8 |  | ||
C | Superior (base) | + 2 cm | 0.5 | 3.5 | 4.8 | 4.6 | 2 |
+ 1 cm | 0 | 3.6 | 5.5 | 5.3 | 1 | ||
Midgland | 0 | 0 | 7.6 | 10 | 8.1 | 2.3 | |
Inferior (apex) | −1 cm | 0 | 7.9 | 9.8 | 8.8 | 1.3 | |
−2 cm |  | 5.2 | 5.9 | 4.5 |  | ||