Table 4: Dose received by the hottest 20% of the urethra volume (DU20), 125I LDR equivalent DU20 (DU20-I), and urethra Normal Tissue Complication Probability (NTCP) for the different seed implants. The values are averaged over the three patients. Radiobiological parameters from Zaider et al. are used.

D U 2 0 (Gy) D U 2 0 - I (Gy)NTCP (%)

125I202.3202.322.0
Pd-I201.8207.422.6
103Pd176.3195.821.3
Pd-Cs (a)185.5194.921.2
Pd-Cs (b)169.0177.319.3
131Cs168.4171.718.7