Radiobiological and dosimetric impact of RayStation pencil beam and Monte Carlo algorithms on intensity‐modulated proton therapy breast cancer plans
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.12676
Abstract: Abstract Purpose RayStation treatment planning system employs pencil beam (PB) and Monte Carlo (MC) algorithms for proton dose calculations. The purpose of this study is to evaluate the radiobiological and dosimetric impact of RayStation PB… read more here.
Keywords: pencil beam; breast; proton; raystation ... See more keywords
Validation of pencil beam scanning proton therapy with multi‐leaf collimator calculated by a commercial Monte Carlo dose engine
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.13817
Abstract: Abstract This study aimed to evaluate the clinical beam commissioning results and lateral penumbra characteristics of our new pencil beam scanning (PBS) proton therapy using a multi‐leaf collimator (MLC) calculated by use of a commercial… read more here.
Keywords: collimator; multi leaf; beam; beam scanning ... See more keywords
A Monte‐Carlo‐based and GPU‐accelerated 4D‐dose calculator for a pencil beam scanning proton therapy system
Sign Up to like & getrecommendations! Published in 2018 at "Medical Physics"
DOI: 10.1002/mp.13182
Abstract: PURPOSE The presence of respiratory motion during radiation treatment leads to degradation of the expected dose distribution, both for target coverage and healthy tissue sparing, particularly for techniques like pencil beam scanning proton therapy which… read more here.
Keywords: pencil beam; beam scanning; scanning proton; delivery ... See more keywords
Pencil beam scanning dose calibration at reduced source-to-axis distance.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.15705
Abstract: BACKGROUND PBS monitoring chambers use an ionization control signal, Monitor Units (MU) or Gigaprotons (Gp), to irradiate a pencil beam and normalize dose calculations. The nozzle deflects the beam from the nozzle axis by an… read more here.
Keywords: beam; axis distance; source axis; pencil beam ... See more keywords
Technical note: Determining equivalent squares of high energetic photon fields.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.16069
Abstract: PURPOSE We developed a method based on a physical pencil beam model for accurate equivalent square calculations for rectangular and irregular fields, for different definitions of equivalent squares, for beams with and without flattening filter,… read more here.
Keywords: beam; equivalent squares; equivalent square; pencil beam ... See more keywords
Technical note: Delivery benefit and dosimetric implication of synchrotron-based proton pencil beam scanning using continuous scanning mode.
Sign Up to like & getrecommendations! Published in 2023 at "Medical physics"
DOI: 10.1002/mp.16434
Abstract: BACKGROUND Discrete spot scanning (DSS) is the commonly used method for proton pencil beam scanning (PBS). There is lack of data on the dose-driven continuous scanning (DDCS). PURPOSE To investigate delivery benefits and dosimetric implications… read more here.
Keywords: stop ratio; ratio; pencil beam; delivery ... See more keywords
Clinical outcomes of head and neck adenoid cystic carcinoma patients treated with pencil beam-scanning proton therapy.
Sign Up to like & getrecommendations! Published in 2020 at "Oral oncology"
DOI: 10.1016/j.oraloncology.2020.104752
Abstract: OBJECTIVE The aim of this study was to evaluate the outcome of patients with head and neck adenoid cystic carcinoma (ACC) treated using pencil beam scanning proton therapy (PBS PT) at our institution. MATERIALS AND… read more here.
Keywords: pencil beam; beam scanning; neck adenoid; head neck ... See more keywords
The impact of MCS models and EFAC values on the dose simulation for a proton pencil beam
Sign Up to like & getrecommendations! Published in 2017 at "Radiation Physics and Chemistry"
DOI: 10.1016/j.radphyschem.2016.02.015
Abstract: Abstract The Multiple Coulomb Scattering (MCS) model plays an important role in accurate MC simulation, especially for small field applications. The Rossi model is used in MCNPX 2.7.0, and the Lewis model in Geant4.9.6.p02. These… read more here.
Keywords: pencil beam; mcs; efac values; mcs models ... See more keywords
Range resolution and reproducibility of a dedicated phantom for proton PBS daily quality assurance.
Sign Up to like & getrecommendations! Published in 2018 at "Zeitschrift fur medizinische Physik"
DOI: 10.1016/j.zemedi.2018.02.001
Abstract: PURPOSE Wedge phantoms coupled with a CCD camera are suggested as a simple means to improve the efficiency of quality assurance for pencil beam scanning (PBS) proton therapy, in particular to verify energy/range consistency on… read more here.
Keywords: pencil beam; range; reproducibility; beam ... See more keywords
Motion effects in proton treatments of hepatocellular carcinoma-4D robustly optimised pencil beam scanning plans versus double scattering plans.
Sign Up to like & getrecommendations! Published in 2018 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/aaecfc
Abstract: Pencil beam scanning (PBS) proton therapy enables better dose conformality for complex anatomical geometries than passive proton scattering techniques, but is more susceptible to organ motion. This becomes an issue when treating moving tumours in… read more here.
Keywords: pencil beam; hepatocellular carcinoma; motion; beam scanning ... See more keywords
Evaluation of continuous beam rescanning versus pulsed beam in pencil beam scanned proton therapy for lung tumours.
Sign Up to like & getrecommendations! Published in 2020 at "Physics in medicine and biology"
DOI: 10.1088/1361-6560/abc5c8
Abstract: The treatment of moving targets with pencil beam scanned proton therapy (PBS-PT) may rely on rescanning strategies to smooth out motion induced dosimetric disturbances. PBS-PT machines, such as Proteus®Plus (PPlus) and Proteus®One (POne), deliver a… read more here.
Keywords: pencil beam; proton therapy; beam scanned; scanned proton ... See more keywords