Results 41 to 50 of about 1,541,061 (327)

Implementation of Monte Carlo based PET verification of ion beam delivery into a TPS

open access: yesRadiation Medicine and Protection, 2022
Objective: To develop and implement an ion beam teletherapy verification system based upon simulations of induced radioactivity and comparison with patient positron emission tomography (PET) scans.
Pablo Yepes   +7 more
doaj   +1 more source

Possible Method for Measuring the Proton Form Factors in Processes with and without Proton Spin Flip

open access: yes, 2008
The ratio of the squares of the electric and magnetic proton form factors is shown to be proportional to the ratio of the cross sections for the elastic scattering of an unpolarized electron on a partially polarized proton with and without proton spin ...
A. I. Akhiezer   +13 more
core   +1 more source

Commissioning and quality assurance of a novel solution for respiratory-gated PBS proton therapy based on optical tracking of surface markers

open access: yesZeitschrift für Medizinische Physik, 2022
We present the commissioning and quality assurance of our clinical protocol for respiratory gating in pencil beam scanning proton therapy for cancer patients with moving targets.
Giovanni Fattori   +18 more
doaj   +1 more source

Proton-air and proton-proton cross sections [PDF]

open access: yesEPJ Web of Conferences, 2013
Different attempts to measure hadronic cross sections with cosmic ray data are reviewed. The major results are compared to each other and the differences in the corresponding analyses are discussed. Besides some important differences, it is crucial to see that all analyses are based on the same fundamental relation of longitudinal air shower ...
openaire   +3 more sources

Long-term results of a phase II study of hypofractionated proton therapy for prostate cancer: moderate versus extreme hypofractionation

open access: yesRadiation Oncology, 2019
Background We performed a prospective phase II study to compare acute toxicity among five different hypofractionated schedules using proton therapy. This study was an exploratory analysis to investigate the secondary end-point of biochemical failure-free
Boram Ha   +13 more
doaj   +1 more source

Antiproton-Proton Channels in J/psi Decays

open access: yes, 2005
The recent measurements by the BES Collaboration of J/psi decays into a photon and a proton-antiproton pair indicate a strong enhancement at the proton-antiproton threshold not observed in the decays into a neutral pion and a proton-antiproton pair.
B. Loiseau   +3 more
core   +2 more sources

Tracking Aqueous Proton Transfer by Two-Dimensional Infrared Spectroscopy and ab Initio Molecular Dynamics Simulations. [PDF]

open access: yes, 2019
Proton transfer in water is ubiquitous and a critical elementary event that, via proton hopping between water molecules, enables protons to diffuse much faster than other ions.
Fayer, Michael D   +5 more
core   +2 more sources

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

Prognostic Impact of Treatment Modalities, Including Targeted Compartmental Radio‐Immunotherapy, in a Cohort of Neuroblastoma Patients With CNS Metastases at Relapse

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez   +13 more
wiley   +1 more source

Near-Threshold eta Meson Production in Proton-Proton Collisions

open access: yes, 1999
The production of eta mesons has been measured in the proton-proton interaction close to the reaction threshold using the COSY-11 internal facility at the cooler synchrotron COSY.
A. Budzanowski   +33 more
core   +1 more source

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