Beam Position Projection Algorithms in Proton Pencil Beam Scanning. [PDF]
Cancers (Basel)Beam position uncertainties along the beam trajectory arise from the accelerator, beamline, and scanning magnets (SMs). They can be monitored in real time, e.g., through strip ionization chambers (ICs), and treatments can be paused if needed. Delivery is more reliable and accurate if the beam position is projected from monitored nozzle parameters to ...
Nesteruk KP +3 more
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Reduced beam time and distal linear energy transfer with mini-ridge filters in pencil beam scanning proton therapy [PDF]
Physics and Imaging in Radiation OncologyBackground and purpose: Previous studies have demonstrated that mini-ridge filters (MRF) can reduce beam delivery time in pencil beam scanning (PBS) proton therapy, but the effect on plan quality has not been analyzed in detail.
Fionnbarr O’Grady +6 more
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A novel approach for proton therapy pencil beam scanning patient specific quality assurance using an integrated detector system and 3D dose reconstruction [PDF]
Frontiers in OncologyPurposeCurrent proton beam therapy patient-specific quality assurance (PSQA) methods rely on time-intensive phantom measurements or machine-reported parameters without independent verification. This work presents an integrated detector system for phantom-
Joseph J. Bateman +16 more
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Proton Radiotherapy for Patients With Oligometastatic Breast Cancer Involving the Sternum [PDF]
International Journal of Particle Therapy, 2021 Introduction: A subset of metastatic breast cancer patients present with oligometastatic disease involving the sternum. Given the proximity to traditional target structures, a proton radiation field can be expanded to include this region, providing ...
Andrew Johnson, BS +3 more
doaj +1 more source
Golden beam data for proton pencil-beam scanning [PDF]
Physics in Medicine and Biology, 2012 Proton, as well as other ion, beams applied by electro-magnetic deflection in pencil-beam scanning (PBS) are minimally perturbed and thus can be quantified a priori by their fundamental interactions in a medium. This a priori quantification permits an optimal reduction of characterizing measurements on a particular PBS delivery system.
Clasie, B. +7 more
openaire +3 more sources
Pencil-beam scanning catheter for intracoronary optical coherence tomography
Opto-Electronic Advances, 2022 Current gradient-index (GRIN) lens based proximal-driven intracoronary optical coherence tomography (ICOCT) probes consist of a spacer and a GRIN lens with large gradient constant.
Jiqiang Kang +4 more
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3D Proton Bragg Peak Visualization and Spot Shape Measurement with Polymer Gel Dosimeters
Applied Sciences, 2022 Proton pencil beam scanning is a dynamic beam delivery technique with excellent conformability to the tumor volume. The accuracy of spot size and scanning positions will have a significant effect on the delivered dose distribution.
Libing Zhu +3 more
doaj +1 more source
Nuclear Engineering and Technology, 2022 In proton therapy, a highly conformal proton dose can be delivered to the tumor by means of the steep distal dose penumbra at the end of the beam range.
Sung Hun Kim +6 more
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Pencil beam scanning dosimetry for large animal irradiation [PDF]
Journal of Radiation Research, 2014 The space radiation environment imposes increased dangers of exposure to ionizing radiation, particularly during a solar particle event. These events consist primarily of low-energy protons that produce a highly inhomogeneous depth-dose distribution.
Lin, Liyong +7 more
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Treatment Planning of Bulky Tumors Using Pencil Beam Scanning Proton GRID Therapy [PDF]
International Journal of Particle Therapy, 2022 Purpose: To compare spatially fractionated radiation therapy (GRID) treatment planning techniques using proton pencil-beam-scanning (PBS) and photon therapy.
Aditya Halthore, MD +7 more
doaj +1 more source