. Author manuscript; available in PMC: 2015 Jun 29.

Published in final edited form as: J Appl Clin Med Phys. 2015 Jan 8;16(1):5126. doi: 10.1120/jacmp.v16i1.5126

Table 2.

Mean dosimetric parameters ± standard deviation from 3D CRT, IMRT_NC, IMRT_CO, and VMAT.

	3D CRT		IMRT_NC	IMRT_CO	VMAT
CTV	V_95%	99.8±0.4	99.5±0.6^*	99.5±0.6^*	99.5 ± 0.6^*
	HI	1.05±0.02	1.07±0.04^*	1.07±0.03^*	1.11±0.04^*^†^‡
	CI	1.56±0.27	1.42±0.32	1.44±0.30	1.60±0.32
PTV	V_95%	98.5±1.4	96.3±2.0^*	96.5±1.5^*	96.4±1.8^*
	HI	1.05±0.02	1.08 ±0.05^*	1.07±0.04^*	1.12±0.02^*^†^‡
	CI	1.04±0.17	0.95±0.20	0.96±0.21	1.07±0.22^†^‡
Skin	D_{10 cm}³ (%)	45.9±7.1	41.9±5. 9^*	43.8±6.5	46.3±7.42^†^‡
	D_{1 cm}³ (%)	72.9±9.6	59.2±10.3^*	61.1±11.9^*	64.2±11.7^*^†
	D_max (%)	86.5±6.7	73.7±11.5^*	74.3±12.1^*	76.3±12.5^*
ILB	V_20% (%)	28.5±8.5	27.0±7.8^*	26.4±8.3^*	23.5±7.5^*^†^‡
	V_50% (%)	15.3±5.3	14.3±3.9	14.8±5.5	14.1±5.6^*^‡
	V_100% (%)	4.3±1.6	3.8±1.3^*	3.9±1.4	4.4±1.9^†^‡
	D_1% (%)	103.7±1.8	103.9±2.5^*	104.0±2.3^*	105.6±2.8^*
Heart	D_10cm³(%)	2.5±1.7	1.8±1.6^*	1.6±1.4^*	1.3±1.1^*^†^‡
CB	D_10cm³ (%)	1.0±0.5	0.7±0.3^*	0.8±0.3^*^†	0.6±0.2^*^‡
ILL	D_10cm³ (%)	11.4±8.3	13.2±10.8	11.8±9.8	9.6±9.9^† ^‡
Ribs	D_max (%)	33.6±33.0	34.3±36.6	33.7±35.8	30.4±36.6^†^‡
Dose fall off	V_50%/V_100% of ILB	3.7±0.8	3.9±0.8	4.0±1.1	3.3±0.8^*^† ^‡
Delivery time (min)		11.0±1.5	9.7±1.0^*	8.3±1.1^*^†	7.0±1.0^*^†^‡

p value < 0.05 compared to 3D CRT where p = the two-tailed paired t-test.

^†

p value < 0.05 compared to IMRT_NC.

^‡

p value < 0.05 compared to IMRT_CO.