Feasibility of Monte-Carlo algorithm in comparison with collapse-cone dose calculation algorithm of a commercial treatment planning system in the presence of high-density metallic implant: a dosimetric study

Journal of the Egyptian National Cancer Institute

Table 1 DVH analysis of PTV

		1	2	3	4	P value
	Technique/parameter	4FMC6MV	4FMC6MV_WP	4FCC6MV	4FCC6MV_WP	1 vs. 2	3 vs. 4	1 vs.3	2 vs. 4
PTV	D_98% (in Gy)	44.49 ± 0.11	44.51 ± 0.13	44.39 ± 0.22	44.45 ± 0.16	NS	NS	NS	0.015
	D₂% (in Gy)	49.40 ± 0.84	49.05 ± 0.76	48.97 ± 0.91	48.57 ± 0.85	NS	NS	0.001	0.001
	D_50% (in Gy)	47.16 ± 0.48	46.85 ± 0.55	47.16 ± 0.52	46.74 ± 0.60	NS	0.02	NS	0.001
	D_max (in Gy)	52.15 ± 1.28	51.91 ± 0.84	50.14 ± 1.07	49.99 ± 0.91	NS	NS	0.001	0.001
	D_min (in Gy)	41.61 ± 0.46	41.96 ± 0.52	41.61 ± 0.46	41.76 ± 0.62	NS	NS	NS	0.005
	D_mean (in Gy)	47.09 ± 0.44	46.83 ± 0.48	47.01 ± 0.46	46.68 ± 0.51	NS	0.038	NS	0.001
	V_107% (in %)	19.23 ± 14.01	12.73 ± 14.35	14.74 ± 16.09	8.67 ± 15.35	NS	NS	0.004	0.001
	V_110% (in %)	3.82 ± 6.08	2.53 ± 6.58	3.02 ± 6.26	1.69 ± 5.19	NS	NS	NS	0.041
	CIRTOG	2.03 ± 0.13	1.97 ± 0.11	1.97 ± 0.12	1.91 ± 0.11	NS	NS	0.001	0.001
	CIHT	0.48 ± 0.03	0.51 ± 0.03	0.51 ± 0.03	0.52 ± 0.03	NS	NS	0.001	0.001
	CN	0.47 ± 0.03	0.49 ± 0.03	0.49 ± 0.03	0.51 ± 0.03	NS	NS	0.001	0.001
	HIICRU	0.11 ± 0.02	0.11 ± 0.02	0.11 ± 0.02	0.09 ± 0.01	NS	NS	0.001	0.001
	HI	1.11 ± 0.02	1.11 ± 0.02	1.11 ± 0.02	1.09 ± 0.02	NS	NS	0.019	0.001
	HIRTOG	1.16 ± 0.03	1.15 ± 0.02	1.11 ± 0.02	1.11 ± 0.02	NS	NS	0.001	0.001