Table 1.

Measured surface doses (mean ± SD of the mean) when Superflab boluses of various thicknesses were placed on a solid water phantom, and 6, 10 MV open (2000 MUs), and IMRT (1982 MUs) photon beams were delivered to the phantom. The setup and measurement point locations are shown in Fig. 1

Radiation beam	Point	Dose (cGy)
		No	0.5 cm	1 cm	1.5 cm	2 cm
		Bolus	Bolus	Bolus	Bolus	Bolus
6 MV open	1	51.5 ± 0.8		139.3 ± 2.9
	2	56.0 ± 3.2		63.6 ± 3.2
	3	68.4 ± 1.5	49.8 ± 1.1	33.5 ± 0.5	24.7 ± 1.3	23.8 ± 0.4
	4	39.0 ± 0.3	41.0 ± 1.1	42.2 ± 0.7	44.5 ± 0.8	44.6 ± 0.7
6 MV IMRT	1	30.0 ± 0.8		68.4 ± 2.4
	2	31.0 ± 3.4		40.0 ± 4.0
	3	28.9 ± 1.0	23.4 ± 0.4	20.1 ± 0.7	17.7 ± 1.2	16.8 ± 1.1
	4	17.6 ± 0.4	18.4 ± 0.5	18.5 ± 0.8	19.6 ± 0.4	20.3 ± 0.9
10 MV open	1	51.0 ± 3.5		131.5 ± 2.8
	2	63.1 ± 2.5		65.3 ± 3.4
	3	77.8 ± 1.4	60.4 ± 1.3	40.5 ± 1.4	28.0 ± 0.9	24.2 ± 0.1
	4	36.7 ± 1.0	36.9 ± 1.6	38.4 ± 0.4	39.5 ± 1.8	39.5 ± 0.2
10 MV IMRT	1	35.2 ± 2.4		75.8 ± 2.0
	2	35.0 ± 0.9		59.3 ± 3.4
	3	35.5 ± 0.9	32.7 ± 1.9	31.9 ± 0.9	24.6 ± 0.7	20.9 ± 0.2
	4	10.4 ± 0.2	11.8 ± 0.2	11.9 ± 0.2	15.0 ± 1.9	16.5 ± 0.1