Dosimetric Comparison of Volumetric Modulated Arc Therapy, Static Field Intensity Modulated Radiation Therapy, and 3D Conformal Planning for the Treatment of a Right-Sided Reconstructed Chest Wall and Regional Nodal Case

Table 4

Comparison between dosimetric parameters for VMAT, IMRT, and 3D.

Structure	Parameter	VMAT_2F_190°	IMRT_190°	(20/80) P/E mix
PTV	D95 (%)	95.18	97.25	95.11
	V95 (%)	95.22	98.09	95.12
	HI	1.17	1.11	1.16
	CI	1.13	1.11	1.39
IMN	D95 (%)	102.25	95.62	99.13
	V95 (%)	100	96.97	97.62
Right lung	Mean (Gy)	13.57	15.83	20.68
	V40 (%)	8.75	8.38	23
	V30 (%)	13.72	13.27	30.19
	V25 (%)	16.66	16.87	34.02
	V20 (%)	20.24	22.33	39.05
	V13 (%)	29.34	43.91	50.80
	V10 (%)	37.68	59.53	59.58
	V5 (%)	75.99	91.87	82.32
Total lung	Mean (Gy)	9.63	11.29	13.30
	V40 (%)	5.54	5.31	14.52
	V30 (%)	8.7	8.4	19.1
	V25 (%)	10.53	10.73	21.51
	V20 (%)	12.79	14.13	24.71
	V13 (%)	18.52	27.85	32.17
	V10 (%)	23.91	37.75	37.72
	V5 (%)	50.12	66.39	52.1
Left lung	Mean (Gy)	2.83	3.46	0.55
	V10 (%)	0	0.53	0
	V5 (%)	4.44	22.56	0
Contralateral breast	Mean (Gy)	1.88	2.02	0.29
	V5 (%)	5.83	6.05	0
Heart	Mean (Gy)	6.64	6.17	3.14
	V20 (%)	3.87	2.43	0.9
	V10 (%)	19.26	13.67	8.6
Liver	Mean (Gy)	10.09	13.7	5.12
Healthy; tissue	Mean (Gy)	6.45	6.97	5.99
	V5 (%)	30	36.8	16.16