Table 2.

Comparison of dosimetric parameters of lateral dose profiles in water presented in Fig. 10.

					Half-width of shoulder			Half-width of low-dose
		Penumbra 20%–80% (cm)			at 95% (cm)			outside field at 5% (cm)
Range (cm)	SOBP (cm)	Meas	DG	SG	Meas	DG	SG	Meas	DG	SG
30.6	10	1.61	1.60	1.40	3.87	3.93	4.32	7.48	7.45	7.07
20.5	10	1.59	1.58	1.38	3.71	3.79	4.17	7.29	7.22	6.79
12.1	4	1.69	1.77	1.62	3.76	3.64	3.89	7.23	7.33	6.83
8.1	4	2.06	2.09	1.93	3.29	3.25	3.51	7.36	7.57	6.74