Results 31 to 40 of about 1,029,186 (289)

Effect of different noise reduction techniques and template matching parameters on markerless tumor tracking using dual‐energy imaging

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To evaluate the impact of various noise reduction algorithms and template matching parameters on the accuracy of markerless tumor tracking (MTT) using dual‐energy (DE) imaging. Methods A Varian TrueBeam linear accelerator was used to acquire a series of alternating 60 and 120 kVp images (over a 180° arc) using fast kV switching, on ...
Mandeep Kaur, Peter Wagstaff, Hassan Mostafavi, Mathias Lehmann, Daniel Morf, Liangjia Zhu, Hyejoo Kang, Michal Walczak, Matthew M. Harkenrider, John C. Roeske   +9 more
wiley   +1 more source

Evaluation of an EPID in vivo monitoring system using local and external independent audit measurements

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The aim of this work was to evaluate the SunCHECK PerFRACTION, the software for in vivo monitoring using EPID images. Materials/Methods First, the PerFRACTION ability to detect errors was investigated simulating two situations: (1) variation of LINAC output and (2) variation of the phantom thickness.
Samuel Ramalho Avelino, Juliana Rosada Dias, Taís Marques Peron, Gabriel Souza Vidal   +3 more
wiley   +1 more source

Accuracy of patient dose estimation in cone beam computed tomography in breast irradiation by size‐specific dose estimates with position correction

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract This study aims to investigate the effects of the position correction of size‐specific dose estimates (SSDE) on patient dose estimation in cone beam computed tomography (CBCT). The relationship between the phantom position and absorbed dose in the right breast was studied using optically stimulated luminescence dosimeters and a simulated human
Hiroyuki Ueno, Kosuke Matsubara, Sayuri Bou, Masato Hizume   +3 more
wiley   +1 more source

Status of the high-intensity heavy-ion accelerator facility in China

AAPPS Bulletin, 2022
Nuclear physics has been aiming at understanding of the origin, structure, and property of strongly interacting matters, which constitute nearly all visible matter in the universe.
Xiaohong Zhou, Jiancheng Yang, the HIAF project team   +2 more
doaj   +1 more source

Evaluation of patient doses for routine digital radiography procedures toward establishing an institutional diagnostic reference levels: A case study in Sri Lanka

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract The present study was conducted as part of a comprehensive work to establish National Diagnostic Reference Levels (NDRLs) in Sri Lanka for the first time. DRLs can be used as an effective optimization tool for identifying unusually high or low patient doses during X‐ray examinations.
Sachith Welarathna, Sivakumar Velautham, Mihira Wanninayake, Sivananthan Sarasanandarajah   +3 more
wiley   +1 more source

Radiation reaction-dominated regime of wakefield acceleration [PDF]

, 2021
We study electron acceleration in a plasma wakefield under the influence of the radiation-reaction force caused by the transverse betatron oscillations of the electron in the wakefield. Both the classical and the strong quantum-electrodynamic (QED) limits of the radiation reaction are considered.
arxiv   +1 more source

Biomedical Research Programs at Present and Future High-Energy Particle Accelerators

Frontiers in Physics, 2020
Biomedical applications at high-energy particle accelerators have always been an important section of the applied nuclear physics research. Several new facilities are now under constructions or undergoing major upgrades.
Vincenzo Patera, Yolanda Prezado, Faical Azaiez, Giuseppe Battistoni, Diego Bettoni, Sytze Brandenburg, Aleksandr Bugay, Giacomo Cuttone, Denis Dauvergne, Gilles de France, Christian Graeff, Thomas Haberer, Taku Inaniwa, Sebastien Incerti, Elena Nasonova, Alahari Navin, Marco Pullia, Sandro Rossi, Charlot Vandevoorde, Marco Durante, Marco Durante   +20 more
doaj   +1 more source

Teleportation of Accelerated Information [PDF]

J. Opt. Soc. Am B Vol 30 No. 1 pages 233-237 (2013), 2012
A theoretical quantum teleportation protocal is suggested to teleport accelerated and non-accelerated information over different classes of accelerated quantum channels. For the accelerated information, it is shown that the fidelity of the teleported state increases as the entanglement of the initial quantum channel increases. However as the difference
arxiv   +1 more source

Developments in laser-driven plasma accelerators [PDF]

Nature Photonics vol. 7 pp. 775-782 (2013), 2014
Laser-driven plasma accelerators provide acceleration gradients three orders of magnitude greater than conventional machines, offering the potential to shrink the length of accelerators by the same factor. To date, laser-acceleration of electron beams to particle energies comparable to those offered by synchrotron light sources has been demonstrated ...
arxiv   +1 more source

Probing dynamics of fusion reactions through cross-section and spin distribution measurement

EPJ Web of Conferences, 2016
Present work aims to explicate the effect of entrance channel mass asymmetry on fusion dynamics for the Compound Nucleus 80Sr populated through two different channels, 16O+64Zn and 32S+48Ti, using cross-section and spin distribution measurements as ...
Kaur Maninder, Behera B.R., Singh Gulzar, Singh Varinderjit, Madhavan N., Muralithar S., Nath S., Gehlot J., Mohanto G., Mukul Ish, Siwal D., Thakur M., Kapoor K., Sharma P., Banerjee T., Jhingan A., Varughese T., Bala Indu, Nayak B.K., Saxena A., Chatterjee M.B., Stevenson P.D.   +21 more
doaj   +1 more source