Results 21 to 30 of about 4,390 (171)

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, Zachary Fellows, MSc, Anh Tran, MSc, Curtiland Deville Jr, MD, Jean L. Wright, MD, Jeffrey Meyer, MD, Heng Li, PhD, Khadija Sheikh, PhD   +7 more
doaj   +1 more source

Determination of surface dose in pencil beam scanning proton therapy [PDF]

Medical Physics, 2020
Purpose/objectiveQuantification of surface dose within the first few hundred water equivalent µm is challenging. Nevertheless, it is of large interest for the proton therapy community to study dose effects in the skin. The experimental determination is affected by the detector properties, such as the detector volume and material.
A. Kern, C. Bäumer, K. Kröninger, L. Mertens, B. Timmermann, J. Walbersloh, J. Wulff   +6 more
openaire   +2 more sources

Technical Delivery Parameters of 2000 Proton Treatment Courses [PDF]

International Journal of Particle Therapy, 2020
Purpose: To summarize the technical delivery parameters of proton plans delivered at the Mayo Clinic in Rochester, Minnesota. Materials and Methods: The database of treated patient proton plans was queried to extract field parameters such as gantry angle,
Amanda J. Deisher, Thomas J. Whitaker, Chris J. Beltran, Robert L. Foote, Michael G. Haddock, Anita Mahajan   +5 more
doaj   +1 more source

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, Omar A. Zeidan, PhD, Twyla Willoughby, PhD, Sanford L. Meeks, PhD, Patrick Kelly, MD, Kevin Erhart, PhD   +5 more
doaj   +1 more source

Proton beam therapy in paediatric cancer: Anticipating the opening of the Australian Bragg Centre for Proton Therapy and Research

Journal of Medical Imaging and Radiation Oncology, EarlyView., 2023
Summary Proton Beam Therapy (PBT) has the potential to improve paediatric cancer care by reducing radiation exposure and thus long‐term toxicities. Ethical concerns and debates surrounding the treatment, such as eligibility and accessibility, are ongoing in Australia. The Australian Bragg Centre for Proton Therapy and Research (ABCPTR) (named after Sir
Jeremy Khong, Hui Tee, Peter Gorayski, Hien Le, Michael Penniment, Sophie Jessop, Jordan Hansford, Melanie Penfold, Julia Green, Kelly Skelton, Frank Saran   +10 more
wiley   +1 more source

Parallel‐plates‐based Dirac Leaky Wave Antennas

IET Microwaves, Antennas & Propagation, 2021
In this work, the authors experimentally show Dirac Leaky Wave Antennas (DLWAs) at upper microwave frequencies. For the first time, DLWAs are implemented using simple Parallel plate waveguide (PPW) technology, while yielding desirable radiation features ...
Sina Rezaee, Mohammad Memarian, Mohammad Ahmadian   +2 more
doaj   +1 more source

A framework for defining FLASH dose rate for pencil beam scanning [PDF]

Medical Physics, 2020
PurposeTo develop a method of (a) calculating the dose rate of voxels within a proton field delivered using pencil beam scanning (PBS), and (b) reporting a representative dose rate for the PBS treatment field that enables correspondence between multiple treatment modalities.
Folkerts, Michael M., Abel, Eric, Busold, Simon, Perez, Jessica Rika, Krishnamurthi, Vidhya, Ling, C. Clifton   +5 more
openaire   +2 more sources

Treatment of ocular tumors through a novel applicator on a conventional proton pencil beam scanning beamline

Scientific Reports, 2022
Treatment of ocular tumors on dedicated scattering-based proton therapy systems is standard afforded due to sharp lateral and distal penumbras. However, most newer proton therapy centers provide pencil beam scanning treatments.
Rajesh Regmi, Dominic Maes, Alexander Nevitt, Allison Toltz, Erick Leuro, Jonathan Chen, Lia Halasz, Ramesh Rengan, Charles Bloch, Jatinder Saini   +9 more
doaj   +1 more source

FLASH Irradiation with Proton Beams: Beam Characteristics and Their Implications for Beam Diagnostics

Applied Sciences, 2021
FLASH irradiations use dose-rates orders of magnitude higher than commonly used in patient treatments. Such irradiations have shown interesting normal tissue sparing in cell and animal experiments, and, as such, their potential application to clinical ...
Konrad P. Nesteruk, Serena Psoroulas
doaj   +1 more source

Normal Tissue Integral Dose as a Result of Prostate Radiation Therapy: A Quantitative Comparison Between High-Dose-Rate Brachytherapy and Modern External Beam Radiation Therapy Techniques

Advances in Radiation Oncology, 2023
Purpose: Quantification of integral radiation dose delivered during treatment for prostate cancer is lacking. We performed a comparative quantification of dose to nontarget body tissues delivered via 4 common radiation techniques: conventional volumetric
Vincent P. Grzywacz, MD, Jessica D. Arden, MD, PhD, Nikhil P. Mankuzhy, MD, Gary S. Gustafson, MD, Evelyn A. Sebastian, BS, Veronica L. Abbott, MS, Kailee J. Walters, MS, Julie A. Puzzonia, MS, Amy S. Limbacher, BS, Jason M. Hafron, MD, Daniel J. Krauss, MD   +10 more
doaj   +1 more source