Results 21 to 30 of about 1,800,736 (210)

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, Manzhou Zhang, Xincheng Xiang, Xiangang Wang   +3 more
doaj   +1 more source

Upgrade of gamma electron vertex imaging system for high-performance range verification in pencil beam scanning proton therapy

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, Jong Hwi Jeong, Youngmo Ku, Jaerin Jung, Sungkoo Cho, Kwanghyun Jo, Chan Hyeong Kim   +6 more
doaj   +1 more source

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, Solberg, Timothy D., Carabe, Alexandro, Mcdonough, James E., Diffenderfer, Eric, Sanzari, Jenine K., Kennedy, Ann R., Cengel, Keith   +7 more
openaire   +2 more sources

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

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

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

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

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

The irradiation parameters of a pencil beam line scanning.

, 2023
The irradiation parameters of a pencil beam line scanning.
Chun-Hsu Yao (483046), Kuo-Jung Juan (16973314), Yuan-Jen Chang (302999), Pei-Jiuan Juang (16973317), Eng-Yen Huang (4805754), Ying-Hsuan Juan (16973320)   +5 more
core   +1 more source