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

Table 3

Mean photoneutron track density and neutron dose (calibration constant of 1.2 tracks/mSv) at surface and isocenter depths for 15 MV and mixed energy beams for 0° gantry angles.

	15 MV			Mixed energy
	Surface	Isocenter	𝑃	Surface	Isocenter	𝑃
	(Mean ± SD)			(Mean ± SD)
Track density (1/cm^3)	175.5 ± 12.7	62 ± 6.2	0.137	111 ± 17.8	46.8 ± 9.3	0.093
Neutron dose (mSv)	146.25 ± 10.58	51.66 ± 5.16	0.097	92.5 ± 14.83	39 ± 7.75	0.085