Zobrazeno 1 - 10
of 723
pro vyhledávání: '"small field dosimetry"'
Autor:
Mageshraja Kannan, Sathiyan Saminathan, B. Shwetha, Varatharaj Chandraraj, D. Gowtham Raj, K. M. Ganesh
Publikováno v:
Journal of Medical Physics, Vol 49, Iss 2, Pp 285-293 (2024)
Aim: This study aims to validate the Razor Nano Chamber (RNC) and Razor Chamber (RC) dosimetric characteristics in a small field. The dosimetric parameters of the two chambers were compared. Materials and Methods: The chamber characteristics of leaka
Externí odkaz:
https://doaj.org/article/0b6be2d5cd104101a09612cc86711f39
Publikováno v:
Frontiers in Oncology, Vol 14 (2024)
BackgroundProton minibeam radiation therapy (pMBRT) can deliver spatially fractionated dose distributions with submillimeter resolution. These dose distributions exhibit significant heterogeneity in both depth and lateral directions. Accurate charact
Externí odkaz:
https://doaj.org/article/f9ec6afb13fc4284a95fdd5a95a900be
Autor:
Amir Hossein Karimi, Indra J. Das, Nahid Chegeni, Iraj Jabbari, Fatemeh Jafari, Ghazale Geraily
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract Grid therapy recently has been picking momentum due to favorable outcomes in bulky tumors. This is being termed as Spatially Fractionated Radiation Therapy (SFRT) and lattice therapy. SFRT can be performed with specially designed blocks made
Externí odkaz:
https://doaj.org/article/1bed65d5c2954b4e87ec3a6b4c55100c
Autor:
Fabian Kugel, Jörg Wulff, Christian Bäumer, Martin Janson, Jana Kretschmer, Leonie Brodbek, Carina Behrends, Nico Verbeek, Hui Khee Looe, Björn Poppe, Beate Timmermann
Publikováno v:
Zeitschrift für Medizinische Physik, Vol 33, Iss 4, Pp 529-541 (2023)
Purpose: The primary fluence of a proton pencil beam exiting the accelerator is enveloped by a region of secondaries, commonly called “spray”. Although small in magnitude, this spray may affect dose distributions in pencil beam scanning mode e.g.
Externí odkaz:
https://doaj.org/article/cc5c1c5288d94284b0365f902555700d
Publikováno v:
Journal of Medical Physics, Vol 48, Iss 3, Pp 281-288 (2023)
Aim: In this study, a 6MV flattening filter (FF) and 6MV FF Free (FFF) photon beam small-field output factors (OF) were measured with various collimators using different detectors. The corrected OFs were compared with the treatment planning system (T
Externí odkaz:
https://doaj.org/article/291f26c265aa42fda83ff8b7a47fe54a
Publikováno v:
Journal of Biomedical Physics and Engineering, Vol 12, Iss 5, Pp 477-488 (2022)
Background: In modern radiotherapy techniques, the frequently small and non-uniformed fields can increase treatment efficiency due to their highly conformal dose distribution. Particular features including lack of Lateral Charge Particle Equilibrium
Externí odkaz:
https://doaj.org/article/3f1b3362cb9542388728e8e370ce1774
Akademický článek
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Autor:
Sule Parlar, Cem Uzal
Publikováno v:
Journal of Radiation Research and Applied Sciences, Vol 15, Iss 1, Pp 95-99 (2022)
The use of appropriate equipment during the measurements required for a treatment planning system (TPS) directly affects the quality of treatment. The present study investigates the effect of small field output factors (OF) obtained with ion chambers
Externí odkaz:
https://doaj.org/article/d660f5123b364524b3a99411a37803d6
Autor:
Nazia Parveen, Prabhakar Ramachandran, Venkatakrishnan Seshadri, Ben Perrett, Andrew Fielding
Publikováno v:
Journal of Medical Physics, Vol 47, Iss 3, Pp 235-242 (2022)
Aim: The aim of this study was to compare the Exradin W2 scintillator, PTW microDiamond, IBA Razor Nano, and IBA Razor chamber detectors for small-field dose measurements and validate the measured data against the EGSnrc user code and observe the var
Externí odkaz:
https://doaj.org/article/c4b3a391dfaa41108f143533ba01904a
Publikováno v:
Journal of Medical Physics, Vol 47, Iss 1, Pp 65-72 (2022)
Background: The experimental determination of relative output factors presents the greatest challenge, especially for small fields with different detectors. The aim of this study is to evaluate the influence of jaw positions on small-field output fac
Externí odkaz:
https://doaj.org/article/3fd79fe60ef341ecb70d88a1a7518864