Results 51 to 60 of about 1,153 (166)

Monte Carlo modeling of the field size dependency for thin window plane‐parallel chambers in kilovoltage X‐ray reference dosimetry

Medical Physics, Volume 53, Issue 5, May 2026.
Abstract Background Clinical dosimetry for kV X‐ray radiotherapy beams requires calibrated ionization chambers. When the clinical field size differs from the field size used for chamber calibration, in‐air measurements result in a different magnitude of scatter from the detector stem or body housing affecting the sensitive volume.
Fayz Kadeer, Brendan Healy, Duncan Butler   +2 more
wiley   +1 more source

Characterization of the Urethane Based Tissue Equivalent Substitute for Phantom Construction: Model Molding, XCOM and MCNPX Studies

International Journal on Advanced Science, Engineering and Information Technology, 2022
The Soft and Lung tissue equivalent substitute (STES and LTES) were developed from urethane PMC121/30 Dry (A and B) of Smooth-On, USA. The part A and B were mixed in the ratio 1:1 and further mixed with calcium carbonate (CaCO3) at a ratio 2:1 by mass. Air moisture was extracted from the mixture for 10minutes. This is the STES and the density after air
Bello, Olaseni M., M. Nor, Norehan, Wan Hassan, Wan Muhamad S.   +2 more
openaire   +2 more sources

Multipurpose Transparent Nanocomposites for Gamma Spectroscopy, Pulse Shape Discrimination, Thermal Neutron Detection, Radiation Shielding, and High Refractive Index Applications

Advanced Functional Materials, Volume 36, Issue 28, 7 April 2026.
Materials exist that are useful for gamma scintillation, radiation shielding, neutron‐gamma pulse shape discrimination (PSD), thermal neutron detection, or high refractive index applications. While certain materials have exhibited optimal performance for each of these applications, none achieve multiple functions.
Isabelle Winardi, Stephane Miaule, Robert Carmichael, Bowen Sun, Ziqing Han, Prabhav Surabhi, Zhen Luo, Noelan Hum, David Prout, Yi‐An Chen, Ting‐Hsuan Wu, Hao Yu, Arion Chatziioannou, Qibing Pei   +13 more
wiley   +1 more source

A novel system for micron‐scale analysis of energy deposition and response to low‐dose radiation

Medical Physics, Volume 53, Issue 3, March 2026.
Abstract Background Micrometer‐scale evaluation of energy deposition is important for radiation protection and therapy as well as for advancing knowledge of responses to radiation in materials and biological systems. Due to the stochastic nature of radiation interactions, there is significant variation in energy deposition in micrometer‐sized targets ...
Prarthana Pasricha, Connor McNairn, Iymad R. Mansour, Kirsty Milligan, Bryan R. Muir, Jeffrey L. Andrews, Edana Cassol, Vinita Chauhan, Sanjeena Subedi, Andrew Jirasek, Sangeeta Murugkar, Rowan M. Thomson   +11 more
wiley   +1 more source

Radiation shielding ability and optical features of La2O3+TiO2+Nb2O5+WO3+X2O3 (X=B, Ga, and In) glass system containing high-entropy oxides

Heliyon, 2023
Three high entropy materials (La2O3+TiO2+Nb2O5+WO3+X2O3 coded as LTNWM1, LTNWM2, and LTNWM3 for X = B, Ga, and In) produced by aerodynamic containerless processing were evaluated for optical attributes, and their gamma-radiation absorption abilities were
Jamila S. Alzahrani, Z.A. Alrowaili, Canel Eke, Abeer S. Altowyan, I.O. Olarinoye, M.S. Al-Buriahi   +5 more
doaj   +1 more source

Determination of Radiation Shielding Properties of Magnesium Oxychloride Cement with Acidic and Basic Pumice Aggregate

Gazi Üniversitesi Fen Bilimleri Dergisi
New generation cements have been the subject of more research in recent years, especially due to their benefits in terms of carbon emissions. One of the important advantages of new-generation cement production is that it causes a significant reduction in
Şemsettin Kılınçarslan, Yasemin Şimşek Türker, Nuri Işıldar   +2 more
doaj   +1 more source

Novel X-ray Communication Based XNAV Augmentation Method Using X-ray Detectors

Sensors, 2015
The further development of X-ray pulsar-based NAVigation (XNAV) is hindered by its lack of accuracy, so accuracy improvement has become a critical issue for XNAV.
Shibin Song, Luping Xu, Hua Zhang, Yuanjie Bai   +3 more
doaj   +1 more source

Calculation of the Effects of Silver (Ag) Dopant on Radiation Shielding Efficiency of BiPbSrCaCuO Superconductor Ceramics Using EGS4 Code

Applied Sciences, 2023
In the current study, the effects of silver (Ag) additive on the radiation shielding efficiency of BiPbSrCaCuO superconducting ceramics was calculated using the EGS4 code and discussed theoretically by comparison with XCOM data.
Selim Kaya
doaj   +1 more source

New beam hardened data correction and its application to artifact reduction in CT images

Medical Physics, Volume 53, Issue 2, February 2026.
Abstract Background Beam hardening is an unavoidable phenomenon in polychromatic CT systems, where lower‐energy photons are preferentially absorbed as x‐rays pass through materials such as tissue, bone, and metal. This energy‐dependent attenuation, which conflicts with the monochromatic assumption in filtered back‐projection (FBP), produces artifacts ...
Sungwhan Kim, Soo‐Ho Kim, Mi‐Kyoung Song, Jaemin Shin, Jong Hyun Seo, Ji‐Yeon Kang   +5 more
wiley   +1 more source

Generation of 3D reference dosimetric datasets towards adoption of model‐based dose calculations for permanent implant prostate brachytherapy

Medical Physics, Volume 53, Issue 2, February 2026.
Abstract Purpose This work aims to create and validate a comprehensive set of test cases and 3D reference dosimetric datasets for model‐based dose calculation algorithms (MBDCAs) in permanent implant prostate brachytherapy. These test cases address the limits of the standard TG‐43 formalism towards improving dose evaluations in prostate cancer ...
Fatemeh Akbari, Vasiliki Peppa, Samuel Ouellet, Narjes Moghadam, Sandra Oliver, Vicent Gimenez‐Alventosa, Luc Beaulieu, Javier Vijande, Rowan M. Thomson   +8 more
wiley   +1 more source