000			02007cam a2200337 a 4500
003			EG-GiCUC
005			20250223032043.0
008			180912s2017 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.12.20.M.Sc.2017.Ah.A
100	0		_aAhmed Medhat Fahmy Moustafa
245	1	0	_aAssessment of the radiation dose in a medical linear accelerator using a simulation model and experimental verification / _cAhmed Medhat Fahmy Moustafa ; Supervised Hassan Fathy Ibrahim , Ehab Marouf Attalla
246	1	5	_aتقييم الجرعة الاشعاعية في الدعجل الخطي الطبي باستخدام نموذج للمحاكاة والتأكد التجريبي
260			_aCairo : _bAhmed Medhat Fahmy Moustafa , _c2017
300			_a178 P. : _bcharts , facsimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Science - Department of Physics
520			_aThis research aims to investigate the use of the Monte Carlo (MC) simulations (Geant4/GATE) to estimate the radiation doses for different field sizes at the isocenter from a medical linac. A water phantom is irradiated by using a 6 MV photon beam delivered by Siemens ONCOR linac. The percent depth doses and dose profiles at different depths are measured using two types of ionization chamber, then compared with the MC calculated data. The comparisons show satisfactory agreement with gamma index passing rates from 63.15% to 98.87%, therefore, MC simulations can be considered adequate for the assessment of the radiation doses from any medical linac
530			_aIssued also as CD
653		4	_aIonization chamber
653		4	_aMedical linac
653		4	_aWater phantom
700	0		_aEhab Marouf Attalla , _eSupervisor
700	0		_aHassan Fathy Ibrahim , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c67439 _d67439