Table 4.

TPS-calculated MUs for 100cGy dose at isocenter in phantom vs. measured dose

Gantry Angle	TPS Cale. MU contour with base late	Measured dose cGy	TPS Cale. MU Contour Phantom alone	Measured dose cGy	% diff in dose delivery
0	123	98.406	119	95.13	3.33
10	124	98.50	119	94.31	4.25
20	126	98.859	120	93.22	5.70
30	133	98.95	125	92.95	6.06
40	139	98.45	132	92.41	6.13
50	154	98.72	143	90.77	8.05
60	154	98.81	154	98.95	−0.14
70	161	98.99	161	98.86	0.13