000			02787cam a2200337 a 4500
003			EG-GiCUC
005			20250223032302.0
008			190518s2017 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aPh.D
099			_aCai01.12.04.Ph.D.2017.Ma.S
100	0		_aMaha Kamal Eldin Mahmoud Hassan Elkazak
245	1	0	_aStudy of algorithms implemented on eclipse in IMRT and rapidarc / _cMaha Kamal Eldin Mahmoud Hassan Elkazak ; Supervisd Nader Abdelsalam Elsherbini , Wael Mohi Eldin Elshemey
246	1	5	_aEclipse دراسة أساليب التحسين في العلاج الإشعاعي متغير الشدة و القوس السريع على جهاز
260			_aCairo : _bMaha Kamal Eldin Mahmoud Hassan Elkazak , _c2017
300			_a104 P. : _bcharts , facsimiles ; _c25cm
502			_aThesis (Ph.D.) - Cairo University - Faculty of Science - Department of Biophysics
520			_aThe aim of this study is to evaluate the impact of using Anisotropic Analytical Algorithm (AAA) and Acuros XB algorithm (AXB) with its both reporting systems AXB-Dm and AXB-Dw in clinical plans of IMRT and RA techniques for Nasopharyngeal, Prostate and Lung patients. Six plans of different algorithm-technique combinations are performed for each patient in order to evaluate the physical parameters extracted from the Dose Volume Histogram (DVH) for PTVs, Organs at Risk (OARs), monitor units and calculation time. All investigated algorithm-technique combinations give good coverage in all of the studied treatment sites. The main difference can be seen in the number of MUs and calculation time parameters. The use of AXB is thus recommended in calculating RA plans in order to save time at a number of MUs comparable to IMRT, while AAA algorithm is preferable when calculating IMRT plans. For all three treatment sites (H&N, prostate and lung), IMRT plans give significantly (p<0.05) better (lower) D2% than RA plans, no matter what the algorithm is. This can be considered an advantage for using IMRT over RA. TLD measurements on different treatment sites show that, except for bone, there is no obvious difference between algorithms even in air regions.These acceptable differences reflect the convergent behavior of AAA and AXB-Dm or AXB-Dw (although the slight differences in bone region which show that AAA and AXB-Dw overestimate the dose compared to AXB-Dm).
530			_aIssued also as CD
653		4	_aAAA
653		4	_aAXB-Dm
653		4	_aAXB-Dw
700	0		_aNader Abdelsalam Elsherbini , _eSupervisor
700	0		_aWael Mohi Eldin Elshemey , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c72005 _d72005