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Characteristics of fast beam switching for spot scanning
Characteristics of fast beam switching for spot scanningAn irradiation method for spot scanning has been developed in order to provide accurate irradiation even for an irregular target shape. In spot scanning irradiation, the beam is turned off while the beam position is shifted to the next spot for precise dose management.
432973 +19 more
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Nuclear Engineering and Technology, 2023 In theory, the sharp dose falloff at the distal end of a proton beam allows for high conformal dose to the target. However, conformity has not been fully achieved in practice, primarily due to beam range uncertainty, which is approximately 4% and varies ...
Youngmo Ku +7 more
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Parallel image scanning with binary phase grating [PDF]
Journal of the European Optical Society-Rapid Publications, 2011 We discuss a novel approach for parallel image scanning, whereby the intensity peaks are generated by a binary phase grating instead of a lens array. These gratings under certain conditions generate one light spot per grating period in several transverse
Brenner K.-H., Buschlinger R.
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ON UNIFORMITY OF RASTER ILLUMINATION UNDER LASER SCANNING [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2016 The paper considers the possibility of a flat light field creation (light raster) of a large size by laser scanning at a distance of several tens of meters with angular sizes equal to 20º×4º.
S. A. Alekseev +4 more
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Evaluation of dosimetry quantities in passive scattering and spot scanning methods in proton therapy based on GATE simulation [PDF]
مجله علوم و فنون هستهای, 2022 Thespot-scan based methods are expected to perform better than other methods for proton therapy in delivering the dose to the intended target. In this study, the GATE computer code is used to evaluate important dosimetric quantities in proton therapy ...
A. Asadi, S.A. Hosseini, N. Vosoughi
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Applied Sciences, 2023 The rate of the removal of materials coated with nano−crystalline diamonds by femtosecond laser etching was examined by adjusting the repetition rate of the femtosecond laser, the energy−flux density of the concentrated spot, and the scanning speed.
Lujun Ren +5 more
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The SPOT Standard Digital Product Format [PDF]
, 1997 This document describes the format of the "SPOT scene" digital products which are produced and distributed by SPOT IMAGE. This format is also called the "CAP format", since it has been designed to be produced by the Centre d’Archivage et de ...
SPOT, IMAGE
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Dosimetric Comparison of Various Spot Placement Techniques in Proton Pencil Beam Scanning [PDF]
International Journal of Particle Therapy, 2022 Purpose: To present quantitative dosimetric evaluations of five proton pencil beam spot placement techniques. Materials and Methods: The spot placement techniques that were investigated include two grid-based (rectilinear grid and hexagonal grid, both ...
Mahboob ur Rehman, PhD +5 more
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Nuclear Engineering and Technology, 2023 We developed a miniaturized multi-dimensional radiation sensor system consisting of an inorganic scintillator array and plastic optical fibers. This system can be applied to remotely obtain the radioactivity distribution and identify the radionuclides in
Jae Hyung Park +6 more
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Dose-response of deformable radiochromic dosimeters for spot scanning proton therapy
Physics and Imaging in Radiation Oncology, 2020 Intrafractional motion and deformation influence proton therapy delivery for tumours in the thorax, abdomen and pelvis. This study aimed to test the dose–response of a compressively strained three-dimensional silicone-based radiochromic dosimeter during ...
Simon V. Jensen +5 more
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