Naslov
Usporedba Markusove i Roosove ionizacijske komorice u dozimetriji elektronskih snopova
(THE COMPARISON OF THE MARCUS AND ROOS IONISATION CHAMBERS IN DOSIMETRY OF THE RADIOTHERAPY ELECTRON BEAMS)

Autori
Viculin, Tomislav ; Purišić, Anka ; Bagović, Davorin ; Bistrović, Matija

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Zbornik radova petog simpozija Hrvatskog društva za zaštitu od zračenja / Krajcar Bronić, Ines ; Miljanić, Saveta ; Obelić, Bogomil - Zagreb, 2003, 86-91

Skup
5. simpozij Hrvatskog društva za zaštitu od zračenja

Mjesto i datum
Stubičke Toplice, Hrvatska, 09.04.2003. - 11.04.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Markusova komorica; Roosova ionizacijska komorica; dozimetrija; elektronski snopovi
(Marcus Ionization Chamber; Roos ionization chamber; radiotherapy; electron beams)

Sažetak
The both recently published protocols for clinical dosimetry IAEA (TRS 398) [1] and AAPM (TG-51) [2] contain improvements for the purpose of more accurate and safe dosimetry of electron beams. The most important novelty is the definition of the reference depthdref as dref = 0.6 R5o -0.1 (1) where R50 is the depth of fifty percent absorbed dose. This value is also used as quality index for electron beams. The authors compare two planparallel ionisation chambers under the new protocols. The Marcus chamber, an old type, and the Roos, a new well-guarded type chamber, are furnished with calibration factors in terms of absorbed dose in water in 60CO beam. The chambers and their cross-sections are shown in Figures 1 and 2. The measurements were performed in a W ellhofer water phantom using a PTW Unidos electrometer. The absorbed dose in water in both protocols can be calculated by equationM is corrected dosimeter reading and kQ -conversion factor.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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