Evaluation of Wall Correction Factor of INER's Air-Kerma Primary Standard Chamber and Dose Variation by Source Displacement for HDR ¹⁹²Ir Brachytherapy

Table 5

Total dose distribution assessments when ¹⁹²Ir source was at different locations.

Distance between central axis and monitoring point (cm)	Dose ratios of monitoring points when source was at different locations
	Point A/central axis	Point B/central axis	Point A/point B
1.25	0.340	16.2	0.021
1.75	0.445	4.57	0.097
2.25	0.530	2.86	0.185
2.75	0.592	2.25	0.263
3.25	0.633	1.91	0.331
3.75	0.676	1.74	0.390
4.25	0.700	1.62	0.431
4.75	0.726	1.52	0.478
5.25	0.764	1.46	0.525
5.75	0.784	1.39	0.565
6.25	0.783	1.36	0.574
6.75	0.825	1.31	0.628
7.25	0.797	1.29	0.618
7.75	0.844	1.27	0.666
8.25	0.842	1.26	0.668
8.75	0.860	1.24	0.696
9.25	0.797	1.22	0.652
9.75	0.848	1.19	0.715