Table 1.

Comparison of dosimetric parameters of lateral dose profiles at mid‐range of SOBPs without the range shifter, measured using the Lynx in a Solid Water^® phantom

SOBP	Penumbra 20%–80% (mm)		Half‐width of 95% maximum (mm)		Half‐width of 5% maximum (mm)
	Measured	TOPAS	Measured	TOPAS	Measured	TOPAS
R120M40	8.0	8.3	41.7	40.8	58.3	59.2
R200M100	7.8	8.1	39.7	39.2	56.5	57.3
R305M100	10.2	10.7	37.4	36.0	59.8	61.0