Table 1.

Percentage peripheral dose measurements under various geometrical conditions

	Depth (cm)
		0			1.5			10
Distance (cm)	1	5	10	1	5	10	1	5	10
5 × 5 (6 MV)	3.22	1.30	0.79	3.88	1.32	0.59	4.64	1.36	0.49
5 × 5 (18 MV)	3.32	1.29	0.67	5.87	1.57	0.74	7.59	0.79	0.38
10 × 10 (6 MV)	6.84	3.53	1.75	6.03	1.65	0.89	7.59	2.11	1.28
10 × 10 (18 MV)	8.18	3.82	2.00	11.81	3.19	1.36	7.32	1.74	0.73
15 × 15 (6 MV)	10.52	5.80	3.48	7.23	2.64	1.10	9.52	3.41	1.66
15 × 15 (18 MV)	12.90	6.60	3.72	12.94	4.28	3.41	8.17	2.66	1.11