Table 2.

Gel injection characteristics

Gel thickness (n=48)	Mean (±SD), mm	Median (range), mm
Base†	8.0 (±6.9)	7.5 (0.0–30.3)
Mid-gland	10.0 (±4.4)	9.4 (0.0–21.5)
Apex††	6.7 (±5.6)	7.1 (0.0–20.8)
Average gel thickness (base/mid/apex)	8.1 (±4.2)	7.1 (2.0–17.9)

Prostate to inner rectal wall distance (n=48)	Pre-injection, mm	Post-injection, mm	P*
Base†
Mean (±SD)	9.8 (±6.6)	18.4 (±7.2)	< .0001
Median (range)	8.2 (1.0–25.9)	18.1 (4.7–34.7)
Mid-gland
Mean (±SD)	5.8 (±3.7)	15.5 (±5.8)	< .0001
Median (range)	5.4 (1.0 – 18.6)	14.6 (5.6 – 34.2)
Apex††
Mean (±SD)	5.9 (±3.0)	12.6 (±5.8)	< .0001
Median (range)	5.6 (1.0–14.1)	11.7 (4.7–31.3)

^*Non-parametric Wilcoxon signed rank test

^†Measurement taken on axial image 3–5mm caudal to cranial-most aspect of prostate

^††Measurement taken on axial image 3–5mm cranial to caudal-most aspect of prostate