TABLE 7.

Ratio of absorbed dose to water of modified calibration and Technical Report Series (TRS)‐398 ($D_{\mathrm{w}}$) obtained from parallel‐plate chamber used in this work

		Elekta Synergy Platform		Elekta Versa HD
Type of chamber	Energy (MeV)	$D_{\mathrm{w}}$	Discrepancy (%)	$D_{\mathrm{w}}$	Discrepancy (%)
Exradin A11	6	1.013	1.3	1.013	1.3
	8	1.013	1.3	1.013	1.3
	10	1.012	1.2	1.013	1.3
	12	1.014	1.4	1.014	1.4
	15	1.015	1.5	1.016	1.6

Note: Discrepancy (%) = (absorbed doses for modified calibration – absorbed doses for TRS‐398)/(absorbed doses for TRS‐398 dose).