Results 1 to 10 of about 2,001,633 (378)

Monitoring of breathing motion in image-guided PBS proton therapy: comparative analysis of optical and electromagnetic technologies

open access: yesRadiation Oncology, 2017
Background Motion monitoring is essential when treating non-static tumours with pencil beam scanned protons. 4D medical imaging typically relies on the detected body surface displacement, considered as a surrogate of the patient's anatomical changes, a ...
Giovanni Fattori   +6 more
doaj   +1 more source

Leaf open time sinogram (LOTS): a novel approach for patient specific quality assurance of total marrow irradiation

open access: yesRadiation Oncology, 2020
There is no ideal detector-phantom combination to perform patient specific quality assurance (PSQA) for Total Marrow (TMI) and Lymphoid (TMLI) Irradiation plan.
Rajesh Thiyagarajan   +13 more
doaj   +1 more source

Performance of the CMS muon detector and muon reconstruction with proton-proton collisions at √s=13 TeV

open access: yesJournal of Instrumentation, 2018
The CMS muon detector system, muon reconstruction software, and high-level trigger underwent significant changes in 2013–2014 in preparation for running at higher LHC collision energy and instantaneous luminosity.
A. Sirunyan   +499 more
semanticscholar   +1 more source

(Anti)Proton and Pion Source Sizes and Phase Space Densities in Heavy Ion Collisions [PDF]

open access: yes, 2001
NA44 has measured mid-rapidity deuteron spectra from AA collisions at sqrt{s}=18GeV/A at the CERN SPS. Combining these spectra with published proton, antiproton and antideuteron data allows us to calculate, within a coalescence framework, proton and ...
A. Hansen   +55 more
core   +3 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

Assessment of a Therapeutic X-ray Radiation Dose Measurement System Based on a Flexible Copper Indium Gallium Selenide Solar Cell

open access: yesSensors, 2022
Several detectors have been developed to measure radiation doses during radiotherapy. However, most detectors are not flexible. Consequently, the airgaps between the patient surface and detector could reduce the measurement accuracy.
Dong-Seok Shin   +10 more
doaj   +1 more source

Emission of neutron-proton and proton-proton pairs in electron scattering induced by meson-exchange currents [PDF]

open access: yes, 2016
We use a relativistic model of meson-exchange currents to compute the proton-neutron and proton-proton yields in $(e,e')$ scattering from $^{12}$C in the 2p-2h channel.
Amaro, J. E.   +6 more
core   +3 more sources

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

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

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