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Calibration of p-type silicon diode for in-vivo dosimetry in Co-60 beams (CROSBI ID 539888)

Prilog sa skupa u zborniku | izvorni znanstveni rad | domaća recenzija

Mrčela, Iva ; Bokulić, Tomislav ; Budanec, Mirjana ; Kusić, Zvonko Calibration of p-type silicon diode for in-vivo dosimetry in Co-60 beams // Proceedings of the Sixth Symposium of the Croatian Radiation Protection Association / Garaj-Vrhovac, Verica ; Kopjar, Nevenka ; Miljanić, Saveta (ur.). Zagreb, 2005. str. 300-305

Podaci o odgovornosti

Mrčela, Iva ; Bokulić, Tomislav ; Budanec, Mirjana ; Kusić, Zvonko

engleski

Calibration of p-type silicon diode for in-vivo dosimetry in Co-60 beams

Calibration of semiconductor detectors for entrance dose measurements was performed in order to implement in-vivo dosimetry as a part of a quality assurance programme for external beam radiotherapy in our department. The DPD-3 Scanditronix basic unit and p-type silicon diodes EDE-5, designed for Co-60 beams and calibrated Farmer type ionisation chambers connected to a PTW Unidos electrometer were used. Entrance dose calibration factors were determined as a ratio of diode signal measured at phantom surface and ionisation chamber signal, measured at depth of maximum dose in a polystyrene phantom. Different correction factors for various source to surface distances, collimator openings, beam directions or gantry angles and presence of wedges and trays in beam set up were evaluated. Set of measurements on polystyrene and Alderson Rando phantom were performed in order to compare expected doses calculated using Theraplan Plus 1000 computer treatment planning system to the measured doses.

in-vivo dosimetry; radiotherapy; diode

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Podaci o prilogu

300-305.

2005.

objavljeno

Podaci o matičnoj publikaciji

Proceedings of the Sixth Symposium of the Croatian Radiation Protection Association

Garaj-Vrhovac, Verica ; Kopjar, Nevenka ; Miljanić, Saveta

Zagreb:

Podaci o skupu

6th Symposium of the Croatian Radiation Protection Association

predavanje

18.04.2005-20.04.2005

Stubičke Toplice, Hrvatska

Povezanost rada

Fizika, Kliničke medicinske znanosti