Table 4.

Calculated LTDCF from the present area integration of planar PPBS dose method and comparison with Monte Carlo simulated values for a virtual chamber of 9 cm radius.

Energy (MeV)	Depth (cm)	LTDCF (a)	LTDCF MC (b)	% difference (1-a/b)
72.5	2	1.103	1.094	0.82
72.5	3	1.106	1.095	1.00
89.6	2	1.057	1.052	0.48
89.6	3	1.058	1.053	0.47
89.6	4	1.058	1.054	0.38
146.9	2	1.020	1.021	−0.10
146.9	7	1.020	1.029	−0.87
146.9	12	1.020	1.029	−0.87
181.1	2	1.010	1.008	0.20
181.1	4	1.010	1.013	−0.30
181.1	19	1.030	1.026	0.39
221.8	2	1.010	1.007	0.30
221.8	10	1.060	1.050	0.95
221.8	20	1.060	1.065	−0.47