نتایج جستجو برای: ebt3 radiochromic film

تعداد نتایج: 91084  

2013
Lucas Sacchini Del Lama Evamberto Garcia de Góes Paulo César Dias Petchevist Edson Lara Moretto José Carlos Borges Dimas Tadeu Covas Adelaide de Almeida

Irradiation of whole blood and blood components before transfusion is currently the only accepted method to prevent Transfusion-Associated Graft-Versus-Host-Disease (TA-GVHD). However, choosing the appropriate technique to determine the dosimetric parameters associated with blood irradiation remains an issue. We propose a dosimetric system based on the standard Fricke Xylenol Gel (FXG) dosimete...

2009
S-T Chiu-Tsao MF Chan

The authors have studied the feasibility of using three new high-sensitivity radiochromic devices in measuring the doses to peripheral points outside the primary megavoltage photon beams. The three devices were GAFCHROMIC® EBT film, prototype Low Dose (LD) Film, and prototype LD Card. The authors performed point dosimetry using these three devices in water-equivalent solid phantoms at x = 3,5,8...

Journal: :Physics in medicine and biology 2005
A S Kirov J Z Piao N K Mathur T R Miller S Devic S Trichter M Zaider C G Soares T LoSasso

The need for fast, accurate and high resolution dosimetric quality assurance in radiation therapy has been outpacing the development of new and improved 2D and 3D dosimetry techniques. This paper summarizes the efforts to create a novel and potentially very fast, 3D dosimetry method based on the observation of scintillation light from an irradiated liquid scintillator volume serving simultaneou...

Journal: :iranian journal of medical physics 0
micaeil mollazadeh m.sc. student in medical physics, medical physics and engineering dept., tehran university of medical sciences, tehran, iran. mahmood allahverdi associate professor, medical physics and engineering dept., tehran university of medical sciences, tehran, iran. tayyeb allahverdi pourfallah assistant professor, biochemistry and biophysics dept., mazandaran university of medical sciences, sari, iran. nader riahi alam associate professor, medical physics and engineering dept., tehran university of medical sciences, tehran, iran. mohammadreza ay associate professor, medical physics and engineering dept., tehran university of medical sciences, tehran, iran.

introduction: gafchromic ebt films are one of the self-developing and modern films commercially available for dosimetric verification of treatment planning systems (tpss). their high spatial resolution, low energy dependence and near-tissue equivalence make them suitable for verification of dose distributions in radiation therapy. this study was designed to evaluate the dosimetric parameters of...

Journal: :Physics in Medicine and Biology 2005

2014
Mishra Subhalaxmi T. Palani Selvam

Relative absorbed dose energy response correction, R, for various radiochromic films in water phantom is calculated by the use of the Monte Carlo-based EGSnrc code system for high energy brachytherapy sources 60Co, 137Cs, 192Ir and 169Yb. The corrections are calculated along the transverse axis of the sources (1-15 cm). The radiochromic films investigated are EBT, EBT2 (lot 020609 and lot 03110...

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