Table 1.

Comparison of the results between dose distribution calculated by Monte Carlo and finite size pencil beam algorithms

Treatment site	PTV dose parameter	P (2 tail)	Signed rank P	Averaged Ndev (%)	SD (%)
Nondetached lung (n=23)	D95	<0.00001	<0.00001	−14.9	7
	Dmean	<0.00001	<0.00001	−12.4	5
	Dmax	0.06	0.0003	−4.3	4
Detached lung (n=21)	D95	<0.00001	<0.00001	−24.4	12
	Dmean	<0.00001	<0.00001	−18.9	9
	Dmax	0.002	0.004	−4.2	5
Intracranial (n=21)	D95	0.5	0.7	−0.3	2
	Dmean	0.02	0.03	0.6	1
	Dmax	<0.00001	<0.00001	5	1
Pancreas (n=15)	D95	0.3	0.4	0.9	3
	Dmean	0.2	0.2	0.7	2
	Dmax	<0.00001	<0.00001	6.5	2

SD: Standard deviation, PTV: Planning target volume, SD: Standard deviation