Table 4.

Measurement of the prostate gland, balloon and prostate-rectum interspace

	Pre implantation	Post implantation	End radiotherapy	P value	3-month follow up	P value
# of patients	26	26	18		18
	Prostate measurements (cm)
Width	4.37 ± 0.59	4.39 ± 0.64	4.44 ± 0.86		4.15 ± 0.75
Length	3.74 ± 0.84	4.15 ± 1.08	4.29 ± 0.95		4.10 ± 1.27
Height	3.42 ± 0.79	3.17 ± 0.61	3.19 ± 0.69		3.14 ± 0.73
	Balloon measurements (cm)
Width		3.06 ± 0.27	2.96 ± 0.25	NS	2.62 ± 0.58
Length		4.25 ± 0.49	3.81 ± 0.84	0.023 *1	2.97 ± 1.25	0.05 *3
Height		1.86 ± 0.24	1.67 ± 0.22	0.03 *2	1.28 ± 0.47	0.003*4
	Prostate-rectum distance (cm)
	0.22 ± 0.2	2.47 ± 0.47	2.41 ± 0.43	NS *5	1.59 ± 0.60	0.005*6

P values:

The change in length and height of the balloon between post implant and end of radiotherapy, *¹ & *², respectively.

The change in length and height of the balloon between end of radiotherapy and at 3 months, *³ & *⁴, respectively.

The change in the prostrate-rectum distance between post-implant and at the end of radiotherapy; and between the end of radiotherapy and at 3 months post-implant,*⁵ &^*6.