Dosimetric Studies of Mixed Energy Intensity Modulated Radiation Therapy for Prostate Cancer Treatments

Table 1

Mean CTV minimum and maximum values obtained in two algorithms (collapsed cone convolution and pencil beam).

(a)  

	CCC
	6 MV	15 MV	Mixed energy	𝑃
	(Mean ± SD)
CTVmin	70.56±3.16	69.02±1.71	71.04±2.09	<0.043
CTVmax	90.97±2.04	88.71±3.01	90.05±1.8	<0.05
CI	1.212±0.04	1.129±0.05	1.253±0.03	<0.06
HI	1.189±0.02	1.160±0.02	1.177±0.03	<0.056

(b)  

	PB
	6 MV	15 MV	Mixed energy	𝑃
	(Mean ± SD)
CTVmin	74.94±3.02	70.21±2.21	72.76±2.54	<0.061
CTVmax	92.74±2.1	90.31±3.67	91.55±3.09	<0.047
CI	1.257±0.05	1.210±0.05	1.314±0.04	<0.07
HI	1.2131±0.03	1.181±0.04	1.197±0.04	<0.066

Minimum and maximum dose to CTV (CTVmin, CVTmax), mean conformity index (CI) and homogeneity index (HI) of the plan are shown in the table with their statistical significance (P).