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Topology optimization design of the "Beam Shaping Assembly" of an AB-BNCT facility - application to the case of glioblastoma treatment.
Phys Med Biol
January 2025
Centre National de la Recherche Scientifique, LPSC, 53 avenue des Martyrs, Grenoble, 38026, FRANCE.
This study aims to determine the optimal structure of the Beam Shaping Assembly (BSA) for an AB-BNCT (Accelerator-Based Boron Neutron Capture Therapy) facility. The aim is to maximize the possible depth of treatment for glioblastoma while ensuring that a treatment time constraint is not exceeded. Approach.
View Article and Find Full Text PDFAdvancing dynamic quantum crystallography: enhanced models for accurate structures and thermodynamic properties.
IUCrJ
January 2025
Faculty of Chemistry, University of Warsaw, Pasteura 1, Warsaw, 02-093, Poland.
X-ray diffraction (XRD) has evolved significantly since its inception, becoming a crucial tool for material structure characterization. Advancements in theory, experimental techniques, diffractometers and detection technology have led to the acquisition of highly accurate diffraction patterns, surpassing previous expectations. Extracting comprehensive information from these patterns necessitates different models due to the influence of both electron density and thermal motion on diffracted beam intensity.
View Article and Find Full Text PDFIntegrated edge-to-exascale workflow for real-time steering in neutron scattering experiments.
Struct Dyn
November 2024
Second Target Station, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
We introduce a computational framework that integrates artificial intelligence (AI), machine learning, and high-performance computing to enable real-time steering of neutron scattering experiments using an edge-to-exascale workflow. Focusing on time-of-flight neutron event data at the Spallation Neutron Source, our approach combines temporal processing of four-dimensional neutron event data with predictive modeling for multidimensional crystallography. At the core of this workflow is the Temporal Fusion Transformer model, which provides voxel-level precision in predicting 3D neutron scattering patterns.
View Article and Find Full Text PDFAn accelerator-based neutron source design with a thermal neutron port and an epithermal neutron port for boron neutron capture therapy.
Appl Radiat Isot
December 2024
Institute of Nuclear Techniques of Budapest University of Technology and Economics, Műegyetem Rkp 9, 1111, Budapest, Hungary.
This study presents a compact accelerator-driven neutron source design with a thermal neutron port and an epithermal neutron port for Boron Neutron Capture Therapy (BNCT), based on 10 mA 2.5 MeV protons bombarding on a 100 μm thick disc-shaped Li target with a diameter of 10 cm. The moderator consists of 2 parts, the epithermal neutron moderator and the thermal neutron moderator.
View Article and Find Full Text PDFFractionated alpha and mixed beam radiation promote stronger pro-inflammatory effects compared to acute exposure and trigger phagocytosis.
Front Cell Neurosci
December 2024
Department of Molecular Biosciences, Centre for Radiation Protection Research, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden.
Introduction And Methods: Aiming to evaluate safety aspects of a recently proposed approach to target Alzheimer's disease, we mimicked a complex boron neutron capture therapy field using a mixed beam consisting of high- and low-linear energy transfer (LET) radiation, Am alpha particles (α) and/or X-ray radiation respectively, in human microglial (HMC3) cells.
Results: Acute exposure to 2 Gy X-rays induced the strongest response in the formation of γH2AX foci 30 min post irradiation, while α- and mixed beam-induced damage (α:X-ray = 3:1) sustained longer. Fractionation of the same total dose (0.
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