Results 11 to 20 of about 1,159,598 (181)

Analytical model for out-of-field dose in photon craniospinal irradiation [PDF]

Physics in Medicine and Biology, 2013
The prediction of late effects after radiotherapy in organs outside a treatment field requires accurate estimations of out-of-field dose. However, out-of-field dose is not calculated accurately by commercial treatment planning systems (TPSs). The purpose of this study was to develop and test an analytical model for out-of-field dose during craniospinal
Phillip J, Taddei, Wassim, Jalbout, Rebecca M, Howell, Nabil, Khater, Fady, Geara, Kenneth, Homann, Wayne D, Newhauser   +6 more
openaire   +3 more sources

Experimental Validation of an Analytical Program and a Monte Carlo Simulation for the Computation of the Far Out-of-Field Dose in External Beam Photon Therapy Applied to Pediatric Patients [PDF]

Frontiers in Oncology, 2022
BackgroundThe out-of-the-field absorbed dose affects the probability of primary second radiation-induced cancers. This is particularly relevant in the case of pediatric treatments.
Marijke De Saint-Hubert, Finja Suesselbeck, Finja Suesselbeck, Fabiano Vasi, Florian Stuckmann, Florian Stuckmann, Miguel Rodriguez, Miguel Rodriguez, Jérémie Dabin, Beate Timmermann, Beate Timmermann, Beate Timmermann, Beate Timmermann, Beate Timmermann, Isabelle Thierry-Chef, Isabelle Thierry-Chef, Isabelle Thierry-Chef, Uwe Schneider, Lorenzo Brualla, Lorenzo Brualla, Lorenzo Brualla   +20 more
doaj   +2 more sources

Accuracy of out-of-field dose calculations by a commercial treatment planning system [PDF]

Physics in Medicine and Biology, 2010
The dosimetric accuracy of treatment planning systems (TPSs) decreases for locations outside the treatment field borders. However, the true accuracy of specific TPSs for locations beyond the treatment field borders is not well documented. Our objective was to quantify the accuracy of out-of-field dose predicted by the commercially available Eclipse ...
Rebecca M, Howell, Sarah B, Scarboro, S F, Kry, Derek Z, Yaldo   +3 more
openaire   +3 more sources

Out-of-field dose calculation by a commercial treatment planning system and comparison by monte carlo simulation for varian TrueBeam® [PDF]

Journal of Medical Physics, 2019
Purpose: The calculation accuracy of treatment planning systems (TPSs) drops drastically when the points outside the field edges are considered. The real accuracy of a TPS and linear accelerator (linac) combination for regions outside the field edge is a
N S Shine, Raghukumar Paramu, M Gopinath, R C Jaon Bos, P M Jayadevan   +4 more
doaj   +2 more sources

Technical Note: Out‐of‐field dose measurement at near surface with plastic scintillator detector [PDF]

Journal of Applied Clinical Medical Physics, 2016
Out‐of‐field dose depends on multiple factors, making peripheral dosimetry complex. Only a few dosimeters have the required features for measuring peripheral dose. Plastic scintillator dosimeters (PSDs) offer numerous dosimetric advantages as required for out‐of‐field dosimetry.
Bourgouin, Alexandra, Varfalvy, Nicolas, Archambault, Louis   +2 more
openaire   +3 more sources

Out-of-field dose assessment for pencil beam scanning proton radiotherapy versus photon radiotherapy for breast cancer in pregnant women [PDF]

Physics and Imaging in Radiation Oncology
Background and purpose: Cancer affects 1 in 1000–2000 pregnancies annually worldwide, creating challenges in balancing cancer treatment and fetal safety.
Menke Weessies, Murillo Bellezzo, Britt J.P. Hupkens, Frank Verhaegen, Gloria Vilches-Freixas   +4 more
doaj   +2 more sources

Effect of organ size and position on out-of-field dose distributions during radiation therapy [PDF]

Physics in Medicine and Biology, 2010
Mantle field irradiation has historically been the standard radiation treatment for Hodgkin lymphoma. It involves treating large regions of the chest and neck with high doses of radiation (up to 30 Gy). Previous epidemiological studies on the incidence of second malignancies following radiation therapy for Hodgkin lymphoma have revealed an increased ...
Sarah B, Scarboro, Marilyn, Stovall, Allen, White, Susan A, Smith, Derek, Yaldo, Stephen F, Kry, Rebecca M, Howell   +6 more
openaire   +3 more sources

A modified broad beam model for uniformly scanned carbon ion therapy accounting for field inhomogeneities [PDF]

Scientific Reports
The purpose was to perform beam modeling and plan verification for uniform scanned (US) carbon ion therapy delivered by Heavy Ion Medical Machine (HIMM).
Yunzhou Xia
doaj   +2 more sources

Influence of Specific Treatment Parameters on Nontarget and Out-of-Field Doses in a Phantom Model of Prostate SBRT with CyberKnife and TrueBeam

Life, 2022
The aim of the study was to determine the influence of a key treatment plan and beam parameters on overall dose distribution and on doses in organs laying in further distance from the target during prostate SBRT.
Marta Kruszyna-Mochalska, Agnieszka Skrobala, Piotr Romanski, Adam Ryczkowski, Wiktoria Suchorska, Katarzyna Kulcenty, Igor Piotrowski, Dorota Borowicz, Kinga Graczyk, Natalia Matuszak, Julian Malicki   +10 more
doaj   +1 more source

Range-shifter effects on the stray field in proton therapy measured with the variance–covariance method

Frontiers in Oncology, 2022
Measurements in the stray radiation field from a proton therapy pencil beam at energies 70 and 146 MeV were performed using microdosimetric tissue-equivalent proportional counters (TEPCs).
Linda Eliasson, Jan Lillhök, Torbjörn Bäck, Robert Billnert-Maróti, Alexandru Dasu, Malgorzata Liszka   +5 more
doaj   +1 more source