Results 61 to 70 of about 4,390 (171)

Clinical Implementation of Proton Therapy Using Pencil-Beam Scanning Delivery Combined With Static Apertures

Frontiers in Oncology, 2021
Proton therapy makes use of the favorable depth-dose distribution with its characteristic Bragg peak to spare normal tissue distal of the target volume. A steep dose gradient would be desired in lateral dimensions, too.
Christian Bäumer, Christian Bäumer, Christian Bäumer, Christian Bäumer, Sandija Plaude, Sandija Plaude, Dalia Ahmad Khalil, Dalia Ahmad Khalil, Dalia Ahmad Khalil, Dirk Geismar, Dirk Geismar, Dirk Geismar, Dirk Geismar, Paul-Heinz Kramer, Paul-Heinz Kramer, Kevin Kröninger, Christian Nitsch, Jörg Wulff, Jörg Wulff, Beate Timmermann, Beate Timmermann, Beate Timmermann, Beate Timmermann   +22 more
doaj   +1 more source

Making Mining Licit: Gold, Commodification, and the Everyday Performance of Law in Colombia

American Anthropologist, EarlyView.
ABSTRACT Ethnographies of resource‐making have shown that the extraction of resource value from objects is premised on obviating the emplaced lifeworlds that surrounded objects before they traveled to consumer markets. Much of this literature looks at such supply‐chain disentanglement from the viewpoint of corporate and formal regulatory practices ...
Jesse Jonkman
wiley   +1 more source

Design study for a compact laser-driven source for medical x-ray fluorescence imaging

Physical Review Accelerators and Beams, 2020
Thomson scattering sources with their hard x-ray pencil beams represent a promising candidate to drive high-resolution X-ray Fluorescence Imaging (XFI).
Theresa Brümmer, Alexander Debus, Richard Pausch, Jens Osterhoff, Florian Grüner   +4 more
doaj   +1 more source

The jaws in the jaws: Morphofunctional analysis of the pharyngeal plates of Labrus viridis Linnaeus, 1758 (Teleostei, Labridae)

Journal of Fish Biology, EarlyView.
Abstract Functional morphology highlights the adaptive flexibility of fish feeding strategies across environmental gradients and seasonal variations, providing key insights for the management and conservation of ichthyofaunal communities and their habitats.
Cristina Gioia Di Camillo, Gaspare Zichittella, Francesco Tiralongo   +2 more
wiley   +1 more source

Accelerated and standardized commissioning of a robotic RadioSurgery system using a hybrid golden beam data model

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Background The CyberKnife™ system requires extensive beam data acquisition across multiple collimation systems. The CyberComm™ framework integrates a linac output tuning procedure with a hybrid Golden Beam Data (GBD) model to accelerate and standardize CyberKnife commissioning while maintaining dosimetric accuracy.
E. Pantelis, A. Moutsatsos, L. Sideri, P. Archontakis, A. Stergioula   +4 more
wiley   +1 more source

Proton beam therapy delivered using pencil beam scanning vs. passive scattering/uniform scanning for localized prostate cancer: Comparative toxicity analysis of PCG 001-09

Clinical and Translational Radiation Oncology, 2019
Background and purpose: Patient-level benefits of proton beam therapy (PBT) relative to photon therapy for prostate cancer (PC) continue to be the focus of debate. Although trials comparing the two modalities are underway, most are being conducted using “
Mark V. Mishra, Rahul Khairnar, Søren M. Bentzen, Gary Larson, Henry Tsai, Christopher Sinesi, Carlos Vargas, George Laramore, Carl Rossi, Lane Rosen, Mingyao Zhu, William Hartsell   +11 more
doaj   +1 more source

Arms positioning in post-mastectomy proton radiation: Feasibility and development of a new arms down contouring atlas

Physics and Imaging in Radiation Oncology, 2020
Background and purpose: Breast cancer patients receiving radiation are traditionally positioned with both arms up, but this may not be feasible or comfortable for all patients.
Nicolas Depauw, Estelle Batin, Andrew Johnson, Shannon M. MacDonald, Rachel B. Jimenez   +4 more
doaj   +1 more source

Systematic review of physical and dosimetric criteria for managing CIEDs in radiotherapy: A medical physicist's perspective

Journal of Applied Clinical Medical Physics, Volume 27, Issue 8, August 2026.
Abstract Aim Current radiotherapy (RT) guidelines for Cardiac Implantable Electronic Devices (CIEDs) are largely based on clinical management strategies and retrospective reports. This systematic review adopts a medical physics perspective to provide a critical, quantitative analysis of the technical evidence required for developing robust safety ...
Tiziana Malatesta, Agnese Barbareschi, Rita Alaimo, Emilio Mezzenga, Maria Grazia Brambilla, Anna Delana, Stefano Andreoli, Rita Consorti, Stefano Ren Kaiser, Marco Mapelli, Eugenia Moretti, Maria Mormile, Giulia Rambaldi Guidasci, Mara Severgnini, Lidia Strigari, Maria Daniela Falco   +15 more
wiley   +1 more source

High frequency percussive ventilation for respiratory immobilization in radiotherapy

Technical Innovations & Patient Support in Radiation Oncology, 2019
High frequency percussive ventilation (HFPV) employs high frequency low tidal volumes (100–400 bursts/min) to provide respiration in awake patients while simultaneously reducing respiratory motion.
Ina M. Sala, Girish B. Nair, Beverly Maurer, Thomas M. Guerrero   +3 more
doaj   +1 more source

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

Advanced Materials, Volume 38, Issue 45, 13 August 2026.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine, Shashank Gupta, William Makinen, Zayvinn Lin, Krystal Delnoce, Reza Moini   +5 more
wiley   +1 more source