Results 51 to 60 of about 15,751 (313)

Validation of an EGSnrc Monte Carlo Model of a 10 MV Photon Beam for Varian Clinac iX Linac, Including Flattening and Flattening-Free Modes

Quantum Beam Science
Modelling of linear accelerators using the Monte Carlo method is critical for precise radiotherapy planning. In addition, detailed and accurate dose estimation to the organ at risk can be assessed and optimized. In this study, EGSnrc Monte Carlo code was
Wafa M. Al-Saleh
doaj   +1 more source

[P278] The use of flattening filter free irradiation mode in normo-fractionated treatments [PDF]

, 2018
Purpose The aim of this study was to identify general advantages and disadvantages of the flattening filter free irradiation mode in normo-fractionated intensity modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT).
Dobler, Barbara, Koelbl, Oliver, Treutwein, Marius, Obermeier, Tina, Moret, Judit Alvarez, Maier, Johannes   +5 more
core   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Feasibility of portal dosimetry for flattening filter‐free radiotherapy [PDF]

Journal of Applied Clinical Medical Physics, 2016
The feasibility of using portal dosimetry (PD) to verify 6 MV flattening filter‐free (FFF) IMRT treatments was investigated. An Elekta Synergy linear accelerator with an Agility collimator capable of delivering FFF beams and a standard iViewGT amorphous silicon (aSi) EPID panel (RID 1640 AL5P) at a fixed SSD of 160 cm were used.
Chuter, Robert W., Rixham, Philip A., Weston, Steve J., Cosgrove, Vivian P.   +3 more
openaire   +2 more sources

Ontology‐Aligned Structuring and Reuse of Multimodal Materials Data and Workflows Toward Automatic Reproduction

Advanced Engineering Materials, EarlyView.
Reproduction of stacking fault energy calculations from literature with a semi‐automated large language model‐assisted extraction procedure: extraction of simulation protocol, atomistic structures, computational parameters, and reported results, ontology alignment, knowledge graph construction and, finally, recomputation forvalidation.
Sepideh Baghaee Ravari, Abril Azocar Guzman, Sarath Menon, Stefan Sandfeld, Tilmann Hickel, Markus Stricker   +5 more
wiley   +1 more source

Monte Carlo study on nanogold dose enhancement for breast radiotherapy using an ICRP female computational phantom

Journal of Taibah University for Science
Due to distinct photoelectric absorption properties and physiochemical features, high-atomic-element nanomaterials are frequently used as radiosensitizer for radiotherapy, such as gold nanoparticles.
Turki Almatani, Wafa M. Al-Saleh
doaj   +1 more source

The effect of prostate motion during hypofractionated radiotherapy can be reduced by using flattening filter free beams

Physics and Imaging in Radiation Oncology, 2018
Background and purpose: Hypofractionated radiotherapy of prostate cancer reduces the overall treatment time but increases the per-fraction beam-on time due to the higher fraction doses.
Hunor Benedek, Minna Lerner, Per Nilsson, Tommy Knöös, Adalsteinn Gunnlaugsson, Crister Ceberg   +5 more
doaj   +1 more source

Acceptable fetal dose using flattening filter-free volumetric arc therapy (FFF VMAT) in postoperative chemoradiotherapy of tongue cancer during pregnancy

Clinical and Translational Radiation Oncology, 2020
Optimizing irradiation protocols for pregnant women is challenging, because there are few cases and a dearth of fetal dosimetry data. We cared for a 36-year-old pregnant woman with tongue cancer.
Wataru Takahashi, Kanabu Nawa, Akihiro Haga, Hideomi Yamashita, Toshikazu Imae, Mami Ogita, Kae Okuma, Osamu Abe, Keiichi Nakagawa   +8 more
doaj   +1 more source

Printed Integrated Logic Circuits Based on Chitosan‐Gated Organic Transistors for Future Edible Systems

Advanced Functional Materials, EarlyView.
Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco, Valerio Francesco Annese, Valerio Galli, Ilaria Penna, Debora Russo, Marina Veronesi, Rita Scarpelli, Stefania Sabella, Mario Caironi   +8 more
wiley   +1 more source