Dose Distributions of an ¹⁹²Ir Brachytherapy Source in Different Media

Table 3

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

Polar angle (degrees)	Water						Lung						Bone
	Radial distance from active source center						Radial distance from active source center						Radial distance from active source center
	0.5 cm	1.0 cm	2.0 cm	3.0 cm	5.0 cm	10.0 cm	0.5 cm	1.0 cm	2.0 cm	3.0 cm	5.0 cm	10.0 cm	0.5 cm	1.0 cm	2.0 cm	3.0 cm	5.0 cm	10.0 cm
1	0.629	0.577	0.579	0.601	0.648	0.730	0.597	0.536	0.514	0.512	0.517	0.553	0.635	0.612	0.646	0.687	0.736	0.809
2	0.631	0.579	0.583	0.607	0.655	0.733	0.600	0.539	0.519	0.523	0.534	0.564	0.637	0.614	0.648	0.694	0.745	0.809
3	0.635	0.589	0.591	0.616	0.657	0.737	0.603	0.549	0.527	0.529	0.540	0.569	0.640	0.623	0.656	0.697	0.745	0.815
5	0.647	0.598	0.611	0.637	0.671	0.750	0.617	0.558	0.549	0.551	0.562	0.590	0.653	0.630	0.674	0.717	0.767	0.822
7	0.666	0.628	0.638	0.663	0.706	0.776	0.638	0.593	0.583	0.586	0.595	0.627	0.671	0.658	0.694	0.738	0.781	0.831
10	0.722	0.688	0.698	0.711	0.737	0.801	0.699	0.660	0.650	0.650	0.658	0.684	0.722	0.713	0.738	0.769	0.801	0.851
12	0.750	0.726	0.729	0.744	0.766	0.814	0.730	0.703	0.691	0.690	0.691	0.714	0.749	0.746	0.766	0.791	0.821	0.868
15	0.793	0.771	0.778	0.786	0.806	0.850	0.775	0.753	0.746	0.744	0.746	0.773	0.790	0.786	0.807	0.823	0.844	0.882
20	0.846	0.835	0.838	0.845	0.861	0.890	0.833	0.823	0.818	0.818	0.814	0.837	0.841	0.841	0.854	0.870	0.884	0.909
25	0.882	0.875	0.873	0.877	0.896	0.915	0.871	0.868	0.856	0.860	0.860	0.868	0.875	0.880	0.882	0.899	0.906	0.922
30	0.912	0.901	0.907	0.904	0.909	0.927	0.903	0.896	0.899	0.892	0.888	0.906	0.905	0.903	0.913	0.915	0.918	0.943
35	0.932	0.933	0.927	0.925	0.932	0.945	0.925	0.929	0.919	0.919	0.915	0.925	0.926	0.932	0.929	0.935	0.935	0.949
45	0.961	0.961	0.965	0.965	0.970	0.974	0.955	0.958	0.962	0.961	0.955	0.960	0.955	0.958	0.962	0.968	0.962	0.977
50	0.971	0.968	0.972	0.971	0.974	0.983	0.968	0.969	0.968	0.968	0.961	0.974	0.967	0.967	0.974	0.973	0.969	0.984
60	0.987	0.988	0.983	0.988	0.984	0.993	0.985	0.988	0.981	0.987	0.981	0.995	0.985	0.984	0.982	0.983	0.983	0.986
75	0.996	1.003	0.994	0.994	0.995	0.999	0.996	1.004	0.994	0.987	0.993	0.998	0.996	1.003	0.995	0.992	0.992	0.992
90	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000	1.000
105	0.997	1.000	0.997	0.993	0.995	0.998	0.997	1.001	0.995	0.995	0.998	1.001	0.997	0.998	0.993	0.993	0.992	0.996
120	0.985	0.987	0.983	0.985	0.992	0.993	0.983	0.987	0.979	0.991	0.986	0.984	0.984	0.985	0.984	0.986	0.979	0.987
130	0.970	0.978	0.975	0.969	0.970	0.982	0.967	0.976	0.973	0.970	0.969	0.964	0.966	0.975	0.973	0.979	0.973	0.970
135	0.961	0.961	0.959	0.963	0.966	0.973	0.956	0.961	0.955	0.957	0.954	0.959	0.956	0.961	0.960	0.964	0.966	0.967
145	0.931	0.932	0.936	0.933	0.942	0.948	0.924	0.930	0.928	0.926	0.922	0.936	0.925	0.931	0.938	0.944	0.940	0.950
150	0.913	0.908	0.911	0.910	0.922	0.939	0.905	0.901	0.901	0.899	0.898	0.909	0.907	0.909	0.918	0.921	0.927	0.943
155	0.887	0.884	0.887	0.888	0.891	0.911	0.876	0.876	0.874	0.875	0.870	0.881	0.881	0.887	0.898	0.909	0.905	0.933
160	0.853	0.853	0.854	0.856	0.877	0.893	0.840	0.842	0.834	0.830	0.832	0.852	0.847	0.858	0.868	0.877	0.890	0.911
165	0.813	0.803	0.805	0.814	0.839	0.873	0.798	0.788	0.780	0.782	0.783	0.803	0.809	0.813	0.828	0.851	0.864	0.900
168	0.784	0.767	0.775	0.786	0.805	0.849	0.767	0.748	0.745	0.748	0.750	0.767	0.781	0.780	0.801	0.823	0.845	0.880
170	0.763	0.743	0.746	0.757	0.780	0.825	0.745	0.723	0.710	0.714	0.721	0.741	0.762	0.758	0.776	0.804	0.832	0.871
173	0.730	0.707	0.719	0.739	0.763	0.812	0.711	0.684	0.680	0.685	0.685	0.708	0.730	0.727	0.756	0.787	0.818	0.869
175	0.713	0.686	0.694	0.702	0.733	0.797	0.693	0.662	0.651	0.647	0.658	0.678	0.714	0.706	0.733	0.760	0.801	0.854
177	0.701	0.663	0.668	0.685	0.716	0.779	0.679	0.637	0.622	0.621	0.632	0.659	0.700	0.688	0.712	0.743	0.784	0.844
178	0.698	0.656	0.663	0.681	0.715	0.776	0.676	0.630	0.618	0.615	0.622	0.649	0.698	0.681	0.711	0.743	0.778	0.837
179	0.695	0.647	0.648	0.667	0.705	0.780	0.673	0.622	0.599	0.598	0.610	0.635	0.695	0.673	0.697	0.733	0.779	0.839
180	0.692	0.649	0.646	0.658	0.703	0.777	0.671	0.622	0.595	0.592	0.596	0.623	0.693	0.674	0.699	0.730	0.774	0.837