Results 81 to 90 of about 96,151 (324)
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose The aim of this work was to report on the optimization, commissioning, and validation of a beam model using a commercial independent dose verification software RadCalc version 7.2 (Lifeline Software Inc, Tyler, TX, USA), along with 4 years of experience employing RadCalc for offline and online monitor unit (MU) verification on the ...
Urszula Jelen +3 more
wiley +1 more source
The impact of a 1.5 T MRI linac fringe field on neighbouring linear accelerators
Physics and Imaging in Radiation Oncology, 2017 Background and purpose: This study investigates the influence of an MRI linac fringe field on neighbouring radiotherapy accelerators and whether restoring their original steering calibration can be used to shorten downtime after changes of the magnetic ...
Thijs Perik +2 more
doaj
APL Photonics, 2021 Solid state beam steering devices are key elements in low cost, robust, and three-dimensional imaging systems. Here, we present a silicon photonic beam steering device based upon an 8 × 8 grating coupler focal plane array approach fed by a thermo-optic ...
X. Chen +12 more
doaj +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose/objective We propose a novel lattice deployment for spatially fractionated radiotherapy (SFRT) treatments. In this approach, a larger diameter high‐dose sphere is centrally placed in the bulky tumor mass and surrounded by smaller diameter high‐dose spheres.
Joshua Misa +2 more
wiley +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Stereotactic radiotherapy (SRT) is a highly effective treatment with precision for small, localized lesions. Proton therapy, characterized by the Bragg peak, offers superior dose conformity compared to photon‐based approaches. However, challenges remain in minimizing lateral penumbra and optimizing dose delivery, particularly for small
Chen‐Yu Chou +3 more
wiley +1 more source
Radiotherapy medical physics in the Philippines: A contemporary overview
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose With cancer ranking as the third leading cause of death in the Philippines and a disparity in healthcare resources across regions, this research aimed to assess the state of radiotherapy medical physics in the country. Methodology The study utilized a comprehensive online survey with 94 structured questions answered by 19 clinics ...
John Paul C. Cabahug +4 more
wiley +1 more source
Interplay between multiple scattering and optical nonlinearity in liquid crystals [PDF]
, 2018 We discuss the role played by time-dependent scattering on light propagation in liquid crystals. In the linear regime, the effects of the molecular disorder accumulate in propagation, yielding a monotonic decrease in the beam spatial coherence.
Alberucci, Alessandro +4 more
core +1 more source
Ion Beam Steering with a High Intensity Electron Beam [PDF]
IEEE Transactions on Nuclear Science, 1985 In conventional theory, steering or bending an ion beam of high energy and high current requires very intense magnetic fields, which are both uneconomical and bulky. This problem is even more severe for singly charged ion beam with very high atomic number, which require large magnetic field energy both to bend and also to focus the beam against its ...
Nguyen, K. T., Uhm, H. S.
openaire +3 more sources
On chip wide angle beam steering Ami [PDF]
CLEO: 2014, 2014 We demonstrate an on-chip optical phased array fabricated in a CMOS compatible process with continuous, fast (100 kHz), wide-angle (51°) beam-steering that is suitable for applications such as low-cost lidar systems.
Yaacobi, Ami +5 more
openaire +4 more sources
Localization accuracy of 6‐second CBCT for lung IGRT with various breathing patterns
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose The 6‐second cone beam computed tomography (CBCT) acquisition of the Ethos HyperSight (Varian Medical Systems, Inc. Palo Alto, CA, USA) on‐board imaging system offers benefits, but could be too fast to accurately capture an average target position in a free‐breathing lung cancer patient. This study aimed to ascertain whether a 6‐second
Jihye Koo +5 more
wiley +1 more source