Results 31 to 40 of about 4,358 (152)

One-Dimensional Beam Scanning Transmitarray Lens Antenna Fed by Microstrip Linear Array

open access: yesIEEE Access, 2019
This paper proposed a one-dimensional beam scanning transmitarray lens antenna fed by a microstrip linear array antenna which owns a wide pattern in the plane orthogonal to the array axis and a narrow pattern in the plane that includes the array axis ...
Na Kou   +3 more
doaj   +1 more source

Determination of Integral Depth Dose in Proton Pencil Beam Using Plane-parallel Ionization Chambers [PDF]

open access: yesInternational Journal of Particle Therapy, 2022
Purpose: This study aimed to determine the integral depth-dose curves and assess the geometric collection efficiency of different detector diameters in proton pencil beam scanning.
Phatthraporn Thasasi, MSc   +3 more
doaj   +1 more source

Inter-comparison of Dose Distributions Calculated by FLUKA, GEANT4, MCNP, and PHITS for Proton Therapy

open access: yesEPJ Web of Conferences, 2017
The dose distributions from proton pencil beam scanning were calculated by FLUKA, GEANT4, MCNP, and PHITS, in order to investigate their applicability in proton radiotherapy.
Yang Zi-Yi   +6 more
doaj   +1 more source

Collimating individual beamlets in pencil beam scanning proton therapy, a dosimetric investigation

open access: yesFrontiers in Oncology, 2022
The purpose of this work is to investigate collimating individual proton beamlets from a dosimetric perspective and to introduce a new device concept, the spot scanning aperture (SSA).
Jason Holmes   +6 more
doaj   +1 more source

Successful Implementation of Image-Guided Pencil-Beam Scanning Proton Therapy in Medulloblastomas

open access: yesDiagnostics, 2023
Medulloblastoma is the most common malignant brain tumour in children, while much rarer in adults. Although the prognosis and outcomes have greatly improved in the era of modern multidisciplinary management, long-term treatment-induced toxicities are ...
Anindita Das   +9 more
doaj   +1 more source

Simultaneous Multiple Liver Metastasis Treated with Pencil Beam Proton Stereotactic Body Radiotherapy (SBRT) [PDF]

open access: yesInternational Journal of Particle Therapy, 2021
Compared with photon stereotactic body radiotherapy (SBRT) plans that may have to use many more penetrating x-ray beams for each isocenter, proton SBRT with ultrahypofractionated doses use fewer beam angles and offer significantly reduced low-dose ...
Neil K. Taunk, MD, MSCTS   +3 more
doaj   +1 more source

Pencil‐beam scanning proton therapy for the treatment of glomus jugulare tumours

open access: yesJournal 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   +1 more source

Pencil beam scanning proton therapy for pediatric intracranial ependymoma [PDF]

open access: yesJournal of Neuro-Oncology, 2016
To assess the clinical outcome and late side effect profile of pencil beam scanning proton therapy (PT) delivered to children with intracranial ependymoma. Between July-2004 and March-2013, 50 patients with intracranial ependymoma (n = 46, grade 3) received involved-field PT at Paul Scherrer Institute (PSI).
Carmen Ares   +6 more
openaire   +4 more sources

Characterization and performance evaluation of the first-proton therapy facility in India

open access: yesJournal of Medical Physics, 2020
Purpose: The purpose of this study is to evaluate the performance characteristic of volumetric image-guided dedicated-nozzle pencil beam-scanning proton therapy (PT) system.
Dayananda Sharma Shamurailatpam   +6 more
doaj   +1 more source

Conformal Dose Modulator for Proton Beam Therapy Part 1: A Simulation Study

open access: yesFrontiers in Oncology, 2022
PurposeConformal dose deliveries in proton therapy utilize either a passive scattering system with a modulator or a pencil beam scanning (PBS) system. Efforts have been made to achieve conformal dose delivery by scanning a single energy layer of pencil ...
Zhexuan Zhang   +7 more
doaj   +1 more source

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