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Pregled bibliografske jedinice broj: 793615

Influence of routine MV CBCT usage on dose distribution in pelvic radiotherapy


Kasabašić, Mladen; Ivković, Ana; Tomaš, Ilijan; Jurković, Slaven; Faj, Dario
Influence of routine MV CBCT usage on dose distribution in pelvic radiotherapy // Proceedings of the ninth symposium of the CRPA / Knežević, Ž. ; Majer, M. ; Krajcar Bronić, I. (ur.).
Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2013. str. 295-301 (predavanje, domaća recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Influence of routine MV CBCT usage on dose distribution in pelvic radiotherapy

Autori
Kasabašić, Mladen ; Ivković, Ana ; Tomaš, Ilijan ; Jurković, Slaven ; Faj, Dario

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

Izvornik
Proceedings of the ninth symposium of the CRPA / Knežević, Ž. ; Majer, M. ; Krajcar Bronić, I. - Zagreb : Hrvatsko društvo za zaštitu od zračenja, 2013, 295-301

ISBN
978-953-96133-8-7

Skup
Deveti simpozij Hrvatskog društva za zaštitu od zračenja

Mjesto i datum
Krk, Hrvatska, 10.-12.4.2013

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
Radiotherapy ; CBCT

Sažetak
The pelvic radiotherapy is a standard treatment for patients with cervical, uterine and rectal carcinomas. During radiation treatment open tabletop device or bellyboard is used to reduce the side effects of healthy surrounding tissue. Patients are continually adjusting to the bellyboard during the treatment which causes geometrical and dosage uncertainties and influences the results of the treatment. Therefore, to reduce this uncertainties, mega-voltage cone-beam computed tomography (MV CBCT) system is used. The objective of this research was to evaluate the image acquisition dose delivered to patients from MV CBCT. MV CBCT imaging was simulated on 15 patients using 3D treatment planning software XiO (CMS Inc., St. Louis, MO). The influence of the routine MV CBCT usage on treatment plan was investigated by analyzing the changes in dose volume histograms, mean values and maximum doses in the planning volumes. Simulations have shown that daily usage of MV CBCT causes differences in the dose volume histograms. Moreover, for every patient mean value exceeded prescribed tolerance (±1% of the prescribed dose) and maximum value exceeded recommended maximum of 107% of the prescribed dose. The results have shown that MV CBCT dose to the patient should be a part of RT plan.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Temeljne medicinske znanosti, Kliničke medicinske znanosti