Results 141 to 150 of about 1,159,598 (181)

Study of out‐of‐field dose in photon radiotherapy: A commercial treatment planning system versus measurements and Monte Carlo simulations [PDF]

Medical Physics, 2020
Sánchez-Nieto B, Medina-Ascanio KN, Rodríguez-Mongua JL, Doerner E, Espinoza I.   +4 more
exaly   +2 more sources

Accuracy and sources of error of out‐of field dose calculations by a commercial treatment planning system for intensity‐modulated radiation therapy treatments [PDF]

Journal of Applied Clinical Medical Physics, 2013
Stephen F Kry
exaly   +2 more sources

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The relative biological effectiveness of out-of-field dose

Physics in Medicine and Biology, 2015
using simulations and models derived from existing literature, this work investigates relative biological effectiveness (RBE) for out-of-field radiation and attempts to quantify the relative magnitudes of different contributing phenomena (spectral, bystander, and low dose hypersensitivity effects).
Michael, Balderson, Brandon, Koger, Charles, Kirkby   +2 more
openaire   +2 more sources

Low dose out-of-field radiotherapy, part 1: Measurement of scattered doses

Cancer/Radiothérapie, 2017
To measure out-of-field doses in a phantom model to better quantify this radiation.The individual contribution of photons and neutrons to the total out-of-field dose for 6 MV and 20 MV photons at open beam were measured in a purpose-designed water phantom.
M, Kruszyna, S, Adamczyk, A, Skrobała, M, Skórska, W, Suchorska, K, Zaleska, A, Kowalik, W, Jackowiak, J, Malicki   +8 more
openaire   +2 more sources

Assessment of Out-of-Field Doses in Radiotherapy of Brain Lesions in Children

International Journal of Radiation Oncology*Biology*Physics, 2011
To characterize the out-of-field doses in pediatric radiotherapy and to identify simple methods by which out-of-field dose might be minimized, with a view to reducing the risk of secondary cancers.With the aim of characterizing the peripheral doses under different treatment conditions, the dose measurements in an anthropomorphic child phantom were ...
Michael L, Taylor, Tomas, Kron, Rick D, Franich   +2 more
openaire   +2 more sources

Characterization of Extrafocal Dose Influence on the Out-of-Field Dose Distribution by Monte Carlo Simulations and Dose Measurements

Health Physics, 2019
Abstract Out-of-field scattered and transmitted extrafocal radiation may induce secondary cancer in long-term survivors of external radiotherapy. Pediatric patients have higher life expectancy and tend to receive higher secondary radiation damage due to geometric and biological factors.
Firass, Ghareeb, Joana, Lencart, Jorge, Oliveira, João A M, Santos   +3 more
openaire   +2 more sources

Out-of-field dose and its constituent components for a 1.5 T MR-Linac

Physics in Medicine & Biology, 2021
Abstract This study aims to quantify the relative contributions of phantom scatter, collimator scatter and head leakage to the out-of-field doses (OFDs) of both static fields and clinical intensity-modulated radiation therapy (IMRT) treatments in a 1.5 T MR-Linac.
Bin Yang, Ka Keung Tang, Chen-Yu Huang, Hui Geng, Wai Wang Lam, Yeung Sum Wong, Mei Yan Tse, Ka Ki Lau, Kin Yin Cheung, Siu Ki Yu   +9 more
openaire   +2 more sources

Out-of-field Dose for Scanned and Scattered Proton Beams

AIP Conference Proceedings, 2009
The dose delivered outside of the primary field to non‐target tissues is of concern in all types of radiotherapy. For a given radiation type, this dose is dependent upon the delivery technique. Proton beams may be spread laterally to cover the target volume using scattering foils or magnetic scanning.
Michael F. Moyers, Floyd D. McDaniel, Barney L. Doyle   +2 more
openaire   +1 more source