"1"^^ . "\u0160olc, Jaroslav" . "The concave eye applicators with 106Ru/106Rh or 90Sr/90Y beta-ray sources are world-wide used in brachytherapy for treating intraocular tumors. It raises the need to know the exact dose delivered by beta radiation to tumors but measurement of the dose to water (or tissue) is very difficult due to short range of electrons. The Monte Carlo code MCNPX has been used to calculate dose distributions from a COB-type 106Ru/106Rh ophthalmic applicator. The depth dose along the applicator central axis and the dose distribution on a spherical surface 1 mm above the plaque inner surface have been compared with measurement data provided by the manufacturer. For distances from 0.5 to 4 mm above the surface, the agreement was within 2.5 % and from 5 mm the difference increased from 6 % up to 25 % at 10 mm whereas the uncertainty of manufacturer data is 20 %. It is assumed that the difference is caused by nonuniformly distributed radioactivity over the applicator radioactive layer."@en . . "RIV/00177016:_____/08:#0000163!RIV11-MPO-00177016" . . . "380561" . "1742-6596" . "Monte Carlo calculation of dose to water of a 106Ru COB-type ophthalmic plaque"@en . . . . . "Monte Carlo calculation of dose to water of a 106Ru COB-type ophthalmic plaque"@en . . "Monte Carlo; ophthalmic applicator; MCNP; beta radiation; simulation; dose to water"@en . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Monte Carlo calculation of dose to water of a 106Ru COB-type ophthalmic plaque" . "[0BB84DA8A2FD]" . . "102" . "RIV/00177016:_____/08:#0000163" . "1" . . . "6"^^ . . . "Journal of Physics: Conference Series" . . . "1"^^ . . "The concave eye applicators with 106Ru/106Rh or 90Sr/90Y beta-ray sources are world-wide used in brachytherapy for treating intraocular tumors. It raises the need to know the exact dose delivered by beta radiation to tumors but measurement of the dose to water (or tissue) is very difficult due to short range of electrons. The Monte Carlo code MCNPX has been used to calculate dose distributions from a COB-type 106Ru/106Rh ophthalmic applicator. The depth dose along the applicator central axis and the dose distribution on a spherical surface 1 mm above the plaque inner surface have been compared with measurement data provided by the manufacturer. For distances from 0.5 to 4 mm above the surface, the agreement was within 2.5 % and from 5 mm the difference increased from 6 % up to 25 % at 10 mm whereas the uncertainty of manufacturer data is 20 %. It is assumed that the difference is caused by nonuniformly distributed radioactivity over the applicator radioactive layer." . "Monte Carlo calculation of dose to water of a 106Ru COB-type ophthalmic plaque" . "R" . .