این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Iranian Journal of Medical Physics، جلد ۱۶، شماره ۵، صفحات ۳۲۹-۳۳۵
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی In Vivo Dosimetry Using a Flat Surface Sun Nuclear Corporation Diode in 60co Beams for Some Radiotherapy Treatments in Ghana
چکیده انگلیسی مقاله Introduction: One of the useful standard quality assurance techniques in radiation therapy is monitoring entrance doses in in-vivo dosimetry. An overall tolerance limit of 5% of the absorbed radiation dose has been recommended by the International Commission of Radiological Units. The implementation of an in vivo dosimetry still remains as a challenge to clinical medical physicists. As a result, the practice of constant monitoring of patients undergoing radiation therapy in most of the radiotherapy departments in Africa has not been given much attention. The study aimed at the evaluation of in-vivo entrance dosimetry using diodes to verify the accuracy of the radiation delivered to patients, compared to prescribed doses. Material and Methods: In this paper, a protocol for in vivo dosimetry using a two flat surface Sun Nuclear Corporation diode in a radiotherapy department has been implemented in equinox Cobalt 60 beams. A water phantom calibrated was performed using the International Atomic Energy Agency standards (TRS 398). Calibration coefficients were determined with diodes using a Perspex phantom to derive correction factors. A total number of 137 patients' doses were measured with the diodes during the treatment of 4 different sites. Results: The average deviation between the measured and expected entrance dose performed by the phantom studies was 5% (0.34±1.8%) in almost all cases. Conclusion: The developed protocol in this study indicates that in vivo dosimetry using silicon diodes is reliable, which can be adopted as a universal quality assurance tool in the radiotherapy departments. Moreover, measurements with diodes can be acquired online which produces an instant readout and is relatively cheaper as compared to the ion chamber. 
کلیدواژه‌های انگلیسی مقاله In vivo Dosimetry, Co-60, Diode, Radiotherapy
نویسندگان مقاله | Eric Manson
University of Ghana Medical School


| Vivian Atuwo‑Ampoh
Oncology Department Komfo Anokye Teaching Hospital Kumasi Ghana


| Samuel Tagoe
National Radiotherapy and Nuclear Medicine Centre, Korle-Bu Teaching Hospital, Accra-Ghana


| Emmanuel Fiagbedzi
Oncology Department KomfoAnokye Teaching Hospital P. O. Box 1934 Kumasi – Ghana


| Eric Addison
Physics Department Kwame Nkrumah University of Science and Technology Kumasi – Ghana


| Cyril Schandorf
Ghana Atomic Energy Commission and School of Nuclear and Allied Sciences, University of Ghana
نشانی اینترنتی http://ijmp.mums.ac.ir/article_12018.html
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/145/article-145-1862273.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده Original Paper
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات