Results 11 to 20 of about 4,563 (171)
Absolute dosimetry for FLASH proton pencil beam scanning radiotherapy
Scientific Reports, 2023 A paradigm shift is occurring in clinical oncology exploiting the recent discovery that short pulses of ultra-high dose rate (UHDR) radiation—FLASH radiotherapy—can significantly spare healthy tissues whilst still being at least as effective in curing ...
Ana Lourenço +14 more
doaj +4 more sources
Applications of various range shifters for proton pencil beam scanning radiotherapy [PDF]
Radiation Oncology, 2021 Background A range pull-back device, such as a machine-related range shifter (MRS) or a universal patient-related range shifter (UPRS), is needed in pencil beam scanning technique to treat shallow tumors.
Haibo Lin +11 more
doaj +5 more sources
Pencil‐beam scanning proton therapy for the treatment of glomus jugulare tumours
Journal of Medical Radiation Sciences, 2022 Introduction Glomus jugulare tumours (GJT) are benign tumours that arise locally and destructively in the base of the skull and can be successfully treated with radiotherapy.
Jiří Kubeš +13 more
doaj +3 more sources
A two-stage framework for fast proton spot map generation in pencil beam scanning prostate SBRT planning. [PDF]
Med PhysAbstract Background In pencil beam scanning (PBS) proton therapy, treatment plans are encoded as proton spot maps (PSMs). Although deep‐learning methods can rapidly predict three‐dimensional (3D) dose distributions from patient anatomy and planning intent, there is still no widely adopted direct, non‐iterative approach to convert doses into physically ...
Tang X +8 more
europepmc +2 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
doaj +1 more source
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
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
openaire +2 more sources
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
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 +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 +5 more
doaj +1 more source