Dose Distributions of an ¹⁹²Ir Brachytherapy Source in Different Media

Table 1

Radial dose function, 𝑔(𝑟), calculated by MCNPX code for the ¹⁹²Ir microSelectron source centered in a spherical tissue phantom with 𝑑=30 cm.

Radial distance (cm)	Water	Bone	Lung	Radial distance (cm)	Water	Bone	Lung
0.2	0.999	0.978	1.003	4.8	0.986	0.989	0.994
0.4	0.997	0.982	1.000	5.0	0.988	0.983	0.994
0.6	0.998	0.989	1.000	5.5	0.979	0.956	0.994
0.8	1.000	0.995	1.000	6.0	0.974	0.937	0.993
1.0	1.000	1.000	1.000	6.5	0.966	0.914	0.989
1.2	1.001	1.006	1.001	7.0	0.955	0.887	0.988
1.4	1.000	1.006	1.000	7.5	0.947	0.863	0.984
1.6	1.003	1.015	1.001	8.0	0.936	0.830	0.982
1.8	1.004	1.016	1.002	8.5	0.923	0.799	0.981
2.0	1.006	1.018	1.001	9.0	0.913	0.767	0.974
2.2	1.001	1.023	1.001	9.5	0.891	0.736	0.966
2.4	0.997	1.019	1.000	10.0	0.872	0.711	0.963
2.6	1.003	1.022	1.001	10.5	0.859	0.672	0.959
2.8	1.004	1.022	1.001	11.0	0.833	0.636	0.956
3.0	1.001	1.019	1.000	11.5	0.820	0.607	0.950
3.2	0.999	1.017	0.999	12.0	0.797	0.574	0.947
3.4	0.997	1.015	0.997	12.5	0.774	0.536	0.940
3.6	0.997	1.011	0.997	13.0	0.746	0.501	0.934
3.8	0.998	1.004	0.997	13.5	0.719	0.467	0.926
4.0	0.996	1.002	0.997	14.0	0.687	0.421	0.918
4.2	0.993	1.000	0.996	14.5	0.651	0.374	0.909
4.4	0.991	0.995	0.996	15.0	0.612	0.329	0.900
4.6	0.988	0.991	0.996