Naslov
Radiografska kontrola brahioterapijskih izvora 137Cs
(RADlOGRAPHYC CONTROL OF 137 Cs BRACHYTHERAPY SOURCES)

Autori
Bistrović, Matija ; Viculin, Tomislav ; Jurković, Slaven

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, 81-85

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
radiografska kontrola; Cs; brahioterapija
(radiographyc control; Cs; brachytherapy)

Sažetak
137CS brachytherapy sources are practical for the intracavitary application due to their relatively long lifetime (T In = 30 y). On the other hand, due to the relatively low energy (0.66 MeV) of the emitted photons, they are suitable for an efficient radiation protection. The dose distribution around the sources is usually calculated by a specific program. However this program requires the knowledge of the position of sources within the applicator as well as the distribution of activity along them. The only way to leam these data is to make an X-ray picture of applicators and sources superimposed to the autoradiography of every source. It is difficult to achieve satisfactory radiographs with high dose rate sources with standard X-ray film material because autoradiography covers the structure of the radigraphic shadow .The problem can be overcome either by applying a high intensity X-ray or gamma beam (originating from a raditherapeutic machine), or by using photographic material of very low sensitivity, for example photographic paper .Combining both possibilities one can obtain satisfactory images.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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