Results 41 to 50 of about 40,542 (246)

Metallization of cyanide-modified Pt(111) electrodes with copper [PDF]

, 2015
The support of the University of Aberdeen is gratefully acknowledged.
Cuesta, Angel, Escudero-Escribano, Maria, Mwanda, Jonathan A., Wildi, Christopher   +3 more
core   +2 more sources

Impact of dose rate on accuracy of intensity modulated radiation therapy plan delivery using the pretreatment portal dosimetry quality assurance and setting up the workflow at hospital levels

Journal of Medical Physics, 2015
The aim of this study was to examine the impact of dose rate on accuracy of intensity modulated radiation therapy (IMRT) plan delivery by comparing the gamma agreement between the calculated and measured portal doses by pretreatment quality assurance (QA)
Karunakaran Kaviarasu, N Arunai Nambi Raj, K Krishna Murthy, A Ananda Giri Babu, Bhaskar Laxman Durga Prasad   +4 more
doaj   +1 more source

Evaluation of an Electronic Portal Imaging Device for Transit Dosimetry [PDF]

Acta Oncologica, 1999
The possibility of using a commercially available electronic portal imaging device for transit dosimetry was investigated. The detection unit of the device comprises a metal plate/fluorescence screen and a camera. Basic parameters of this system were investigated: stability, detector uniformity, dose-response curve, field-size dependence and phantom ...
X, He, A, Van Esch, R, Reymen, D, Huyskens   +3 more
openaire   +2 more sources

Creating A Dynamic, Multi-Purpose Correction for Multiple Geometries and Field Sizes to Account for Off-Axis and Asymmetric Backscatter With Varian Portal Dosimetry

, 2016
Intensity modulated radiation therapy and volumetric modulated arc therapy are increasingly common in radiation therapy due to their benefits of target conformity and normal tissue sparing.
Manigold, Remy
core   +1 more source

A Cloud-ready Architecture for Shared Medical Imaging Repository

, 2020
Background and Objective: Nowadays usage paradigms of medical imaging resources are requesting vendor-neutral archives, accessible through standard interfaces, with multi-repository support.
Bastião, Luís, Costa, Carlos, Lebre, Rui   +2 more
core   +1 more source

Assessment of three-dimensional set-up errors in conventional head and neck radiotherapy using electronic portal imaging device

Radiation Oncology, 2007
Background Set-up errors are an inherent part of radiation treatment process. Coverage of target volume is a direct function of set-up margins, which should be optimized to prevent inadvertent irradiation of adjacent normal tissues. The aim of this study
Devi P Reena, Agarwal Jai, Kadam Avinash, Chopra Supriya, Gupta Tejpal, Ghosh-Laskar Sarbani, Dinshaw Ketayun   +6 more
doaj   +1 more source

A systematic review of methods to immobilise breast tissue during adjuvant breast irradiation [PDF]

, 2013
Greater use of 3D conformal, Intensity Modulated Radiotherapy (IMRT) and external beam partial breast irradiation following local excision (LE) for breast cancer has necessitated a review of the effectiveness of immobilisation methods to stabilise breast
Barrett-Lennard, Becker, Bentel, Bentzen, Canney, Carter, Centre for Reviews and Dissemination, Chen, Chopra, Christopher Bragg, Clarke, Creutzberg, Croog, Cross, David Dodwell, David Green, Fisher, Fisher, Fisher, Gierga, Goldsworthy, Graham, Grann, Hector, Heidi Probst, Hurkmans, Jagsi, John Hart, Keller, Kirby, Latimer, Mahe, Mitchell, Morrow, Munshi, Nalder, Office for National Statistics, Probst, Scottish Intercollegiate Guidelines Network, Stegman, Strydhorst, The Royal College of Radiologists, Institute of Physics and Engineering in Medicine, Society and College of Radiographers, Thilmann, Valdagni, Varga, Veldeman, Veldeman, Veronesi, Zierhut   +48 more
core   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Small field measurements using electronic portal imaging device

Biomedical Physics & Engineering Express
Abstract Purpose/Objective. Small-field measurement poses challenges. Although many high-resolution detectors are commercially available, the EPID for small-field dosimetry remains underexplored. This study aimed to evaluate the performance of EPID for small-field measurements and to derive tailored correction factors ...
A Aziz Sait, SA Yoganathan, Glenn W Jones, Tusar Patel, Nikhil Rastogi, SP Pandey, Sunil Mani, Raghavendiran Boopathy   +7 more
openaire   +2 more sources

Electronic Portal Imaging Device (EPID) Portal Image Filtering for Simplifying Registration on Radiation Therapy

Japanese Journal of Radiological Technology, 2012
A simple method for improving the quality of electronic portal imaging device (EPID) portal images was proposed for the reduction of the burden on the registration between digital reconstruction radiography (DRR) and EPID portal images in radiation therapy.
Masanori, Yamada, Masaki, Ohkubo, Akihiro, Kayugawa, Hiromi, Yamada, Masataka, Matsuura, Takashi, Miura, Toshihisa, Kusumoto   +6 more
openaire   +3 more sources