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تعداد نتایج: 21164567 فیلتر نتایج به سال:
In vivo dosimetry seems an appropriate method for quality assurance in radiotherapy with CO-60, which can be considered as a routine program in radiotherapy centers. In this study, entrance and exit dose in tangential fields were measured in phantom for 30 breast cancer patients by using TLD in radiotherapy section of Imam Khomeini Hospital. TLD crystals were calibrated against SSDL (Secondary...
Introduction: Academic achievement of students is one of the important indicators of education. Hence study variables that are related to academic achievement in different subjects, is one of the main topics of research in Education system. this study performed in order to asses the association of student‘s education progress with Additional classes before passing entrance exam. Material and ...
Background. Success of radiotherapy relies on accurate dose delivery. In vivo dosimetry improves control of treatment quality. Patients and methods. In vivo dosimetry with commercial diodes was performed in 209 rectal cancer patients treated with four-field box technique. The diodes measured either entrance or exit dose in each treatment field. The results were compared to the planned values an...
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