نتایج جستجو برای: rando
تعداد نتایج: 268 فیلتر نتایج به سال:
Öz Amaç: Bu çalışmada meme kanseri nedeniyle radyoterapi alan gerçek hastayı taklit eden bir fantom üzerinde farklı organlarda absorbe edilen doz araştırılmıştır. Farklı organlardaki ortalama için tedavi planlama sistemi (TPS) ve termolüminesans dozimetre (TLD) ölçümleri karşılaştırılmıştır. Gereç Yöntemler: Alderson kadın rando sol dokusu hedef hacmi olarak seçildi. Varian DHX cihazında teknik...
TL dosimetry is known as one of the effective dose estimation methods in diagnostic radiology. Cephalometry is used by dentists, oral and maxillofacial surgeons to choose the appropriate treatment. The purpose of this study is to measure the entrance skin dose, and dose to different organs of the patients in cephalometry using TLD-100. The entrance skin, and organ dose were obtained by putting ...
Journal of Avian BiologyVolume 52, Issue 3 CorrigendumFree Access Acoustic, genetic and morphological analyses the Canarian common chaffinch complex Fringilla coelebs ssp. reveals cryptic diversification This article corrects following: genetic, Juan Carlos Illera, Rando, Eduardo Rodriguez-Exposito, Mariano Hernández, Santiago Claramunt, Aurelio Martín, Volume 49Issue 12Journal Biology First Pu...
In our study, we aimed to measure the dose exposed by fetus during three-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated (IMRT) treatment techniques in pregnant patients who had undergo due breast cancer with thermoluminescence dosimetry (TLD) compare these measurements planning system (TPS). 2.5 mm- thick computed tomography (CT) images of Alderson Rando phantom device were...
This paper proposes a method for dose estimation in criticality accidents through hair dosimetry. This method is one of the essential requirements of a comprehensive dosimetry system for responding the criticality accidents. The hair samples were irradiated to different dose levels on a RANDO phantom in a standard Cf-252 field. Post-preparation of the samples were done by solving them in approp...
The purpose of this paper is to demonstrate that an inexpensive 3D printer can be used to manufacture patient-specific bolus for external beam therapy, and to show we can accurately model this printed bolus in our treatment planning system for accurate treatment delivery. Percent depth-dose measurements and tissue maximum ratios were used to determine the characteristics of the printing materia...
A new method is proposed for scatter-correction of cone-beam CT images. A coarse reconstruction is used in initial iteration steps. Modelling of the x-ray tube spectra and detector response are included in the algorithm. Photon diffusion inside the imaging subject is calculated using the Monte Carlo method. Photon scoring at the detector is calculated using forced detection to a fixed set of no...
BACKGROUND EBT and EBT3 radioChromic films have been used in radiotherapy dosimetry for years. OBJECTIVE The aim of the current study is to compare EBT and EBT3 radioChromic films in dosimetry of radiotherapy fields for treatment of parotid cancer. METHODS Calibrations of EBT and EBT3 films were performed with identical setups using a 6 MV photon beam of a Siemens Primus linac. Skin dose wa...
The purpose of this study is to develop a total body irradiation technique that does not require additional devices or sophisticated processes to overcome the space limitation of a small treatment room. The technique aims to deliver a uniform dose to the entire body while keeping the lung dose within the tolerance level. The technique treats the patient lying on the floor anteriorly and posteri...
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