Results 81 to 90 of about 2,213,718 (231)
Journal of Applied Clinical Medical Physics, Volume 26, Issue 11, November 2025.Abstract Background The dosimetric leaf gap (DLG) value is a key parameter that affects dose calculation accuracy in radiotherapy when using the Eclipse treatment planning system. Diode array dosimeters are used to determine the optimal DLG value because they are convenient and fast, providing instant readout of planar dose distributions rather than a ...
Yoshitsugu Matsumoto +10 more
wiley +1 more source
Detector response and dose calculation lateral to material interfaces for 6 MV photon beam
Journal of Applied Clinical Medical Physics, Volume 26, Issue 11, November 2025.Abstract Background Dose calculation around inhomogeneities is challenging for many algorithms. A validation of dose distributions in these conditions is not straightforward, as detector response close to material interfaces is affected by the non‐equilibrium situation, the changing energy spectrum and the volume effect in a steep dose gradient ...
Jonas Ringholz +2 more
wiley +1 more source
Validation of Geant4 nuclear reaction models for hadrontherapy and preliminary results with SMF and BLOB [PDF]
, 2017 Reliable nuclear fragmentation models are of utmost importance in hadrontherapy, where Monte Carlo (MC) simulations are used to compute the input parameters of the treatment planning software, to validate the deposited dose calculation, to evaluate the ...
Barbara Caccia +6 more
core +1 more source
A device for production of PAGAT dosimetry gel
Medical Physics, Volume 52, Issue 11, November 2025.Abstract Background PAGAT (PolyAcrylamide Gelatine gel fabricated at ATmospheric conditions) gel dosimetry provides a valuable three‐dimensional (3D) measurement tool for photon therapy, particularly in the context of advanced radiotherapy techniques such as volumetric modulated arc therapy or intensity‐modulated radiation therapy.
Christina Stengl +5 more
wiley +1 more source
Radiochromic film label made from chitosan and Taraxacum officinale leaf extract
IOP Conference Series: Materials Science and Engineering, 2019 Monitoring the dose of gamma-ray radiation is important in the healthcare field. A simple indicator for dose monitoring is provided by radiochromic labels.
P. Widodo +5 more
semanticscholar +1 more source
Medical Physics, Volume 52, Issue 11, November 2025.Abstract Background Respiratory and digestive motion can compromise the accuracy of radiotherapy (RT), affecting tumor targeting and healthy tissue sparing. Current phantoms often fail to replicate complex organ movements and lack compatibility with advanced imaging modalities like magnetic resonance imaging (MRI) and 4D computed tomography (4DCT ...
Anahita Bakhtiari Moghaddam +18 more
wiley +1 more source
Responses of Gafchromic EBT3 films with polypropylene barriers to UV radiation
Results in Physics, 2017 The present paper proposed to use Gafchromic EBT3 films covered with 2, 4 and 6 polypropylene-film barriers for long-term monitoring of solar UV radiation. The usable range for the films with 2 barriers was from ∼4 to ∼40 Jcm−2, that for the films with 4
K.N. Yu, S.L. Chun, P.M. Chan
doaj +1 more source
A nomogram to determine required seed air kerma strength in planar 131 Cesium permanent seed implant brachytherapy [PDF]
, 2019 Purpose: Intraoperatively implanted Cesium-131 ( 131 Cs) permanent seed brachytherapy is used to deliver highly localized re-irradiation in recurrent head and neck cancers.
Bar-Ad, Voichita +4 more
core +1 more source
X-Ray Spectrometry, Volume 54, Issue 6, Page 670-679, November/December 2025.ABSTRACT The measurement of the elemental composition of atmospheric Particulate Matter (PM) is of paramount importance in air pollution studies, providing fundamental information for identifying aerosol sources and understanding their contributions.
Cosimo Fratticioli +10 more
wiley +1 more source
Assessment of radiographic screen-film systems: a comparison between the use of a microdensitometer and a drum film digitiser [PDF]
, 2017 A high-end drum film digitiser (Tango, Germany) and a calibrated linear microdensitometer developed by PTB were used to assess the modulation transfer function (MTF) and the noise power spectra (NPS) of 3 mammographic screen film systems at optical ...
Bergmann, D. +3 more
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