Exploració per autor "Sempau Roma, Josep"
Ara es mostren els items 18-30 de 30
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PENELOPE-2008: A Code System for Monte Carlo Simulation of Electron and Photon Transport
Salvat, Francesc; Fernández-Varea, Jose Maria; Sempau Roma, Josep (2009)
Working paper
Accés obertThe computer code system PENELOPE (version 2008) performs Monte Carlo simulation of coupled electron-photon transport in arbitrary materials for a wide energy range, from a few hundred eV to about 1 GeV. Photon transport ... -
PENELOPE/PRIMO-calculated photon and electron spectra from clinical accelerators
Brualla, Lorenzo; Rodríguez, Miguel; Sempau Roma, Josep; Andreo, Pedro (Springer (Biomed Central Ltd.), 2019-01-11)
Article
Accés obertBackground: The availability of photon and electron spectra in digital form from current accelerators and Monte Carlo (MC) systems is scarce, and one of the packages widely used refers to linacs with a reduced clinical use ... -
PenMesh-Monte Carlo radiation transport simulation in a triangle mesh geometry
Badal Soler, Andreu; Kyprianou, Iacovos; Banh, Diem Phuc; Badano, Aldo; Sempau Roma, Josep (2009-12)
Article
Accés obertWe have developed a general-purpose Monte Carlo simulation code, called penMesh, that combines the accuracy of the radiation transport physics subroutines from PENELOPE and the flexibility of a geometry based on triangle ... -
PRIMO: A graphical environment for the Monte Carlo simulation of Varian and Elekta linacs
Rodriguez, Manuel Jairo; Sempau Roma, Josep; Brualla, Lorenzo (2013-10)
Article
Accés restringit per política de l'editorialBackground: The accurate Monte Carlo simulation of a linac requires a detailed description of its geometry and the application of elaborate variance-reduction techniques for radiation transport. Both tasks entail a substantial ... -
Quantification of dopaminergic neurotransmission SPECT studies with I-123-labelled radioligands. A comparison between different imaging systems and data acquisition protocols using Monte Carlo simulation
Ros, D; Pavia, J; Calviño Tavares, Francisco; Lomena, F; Crespo, C; Gallego, J; Cot Sanz, Alberto; Falcon, C; Bullich, S; Pareto, D; Aguiar, P; Sempau Roma, Josep (2008-07)
Article
Accés restringit per política de l'editorialPurpose 123I-labelled radioligands are commonly used for single-photon emission computed tomography (SPECT) imaging of the dopaminergic system to study the dopamine transporter binding. The aim of this work was to ... -
RECORDS: improved reporting of Monte Carlo radiation transport studies
Sechopoulos, Ioannis; Rogers, David W.O.; Bazalova Carter, Magdalena; Sempau Roma, Josep (2018-07-15)
Article
Accés obertStudies involving Monte Carlo simulations are common in both diagnostic and therapy medical phy- sics research, as well as other fields of basic and applied science. As with all experimental studies , the conditions and ... -
RECORDS: Improved reporting of Monte Carlo radiation transport studies: Report of the AAPM Research Committee Task Group 268
Sechopoulos, Ioannis; Rogers, D.W.O.; Bazalova Carter, Magdalena; Bolch, Wesley E.; Heath, Emily C.; McNitt-Gray, Michael F.; Sempau Roma, Josep; Williamson, Jeffrey F. (2018-01-01)
Article
Accés obert© 2017 American Association of Physicists in Medicine. Studies involving Monte Carlo simulations are common in both diagnostic and therapy medical physics research, as well as other fields of basic and applied science. As ... -
Spencer–Attix water/medium stopping-power ratios for the dosimetry of proton pencil beams
Gomà, Carles; Andreo, Pedro; Sempau Roma, Josep (2013-03-21)
Article
Accés restringit per política de l'editorialThis paper uses Monte Carlo simulations to calculate the Spencer-Attix water/medium stopping-power ratios (sw, med) for the dosimetry of scanned proton pencil beams. It includes proton energies from 30 to 350 MeV and typical ... -
Technical Note: On the efficiency of variance reduction techniques for Monte Carlo estimates of imaging noise
Sharma, Diksha; Sempau Roma, Josep; Badano, Aldo (2018-02)
Article
Accés obertAmerican Association of Physicists in Medicine. Purpose: Monte Carlo simulations require large number of histories to obtain reliable estimates of the quantity of interest and its associated statistical uncertainty. Numerous ... -
Technical Note: Study of the electron transport parameters used in penelope for the Monte Carlo simulation of Linac targets
Rodriguez, Miquel; Sempau Roma, Josep; Brualla, Lorenzo (2015-06-01)
Article
Accés restringit per política de l'editorialPurpose: The Monte Carlo simulation of electron transport in Linac targets using the condensed history technique is known to be problematic owing to a potential dependence of absorbed dose distributions on the electron ... -
The influence of the field setup on the dosimetry of abutted fields in single-isocenter half-beam techniques
Hernández, V.; Sempau Roma, Josep (2011-03)
Article
Accés restringit per política de l'editorialPurpose: To study the influence of the field setup on the dosimetry at the junction in singleisocenter half-beam techniques. Methods: The dosimetry at the junction for a two-field setup with the gantry at zero was ... -
Transit-guided radiation therapy: proof of concept of an on-line technique for correcting position errors using transit portal images
Latorre Musoll, Artur; Delgado Tapia, Paula; Lizondo Gisbert, María; Jornet Sala, Núria; Sempau Roma, Josep (Institute of Physics (IOP), 2022-08-07)
Article
Accés obertObjective.Transitin vivodosimetry methods monitor that the dose distribution is delivered as planned. However, they have a limited ability to identify and to quantify the cause of a given disagreement, especially those ... -
Validation of semi-quantitative methods for DAT SPECT: influence of anatomical variability and partial volume effect
Gallego, J.; Niñerola-Baizán, A.; Cot, A.; Sempau Roma, Josep (2015)
Article
Accés restringit per política de l'editorialThe aim of this work was to evaluate the influence of anatomical variability between subjects and of the partial volume effect (PVE) on the standardized Specific Uptake Ratio (SUR) in [123I]FP-bib SPECT studies. To this ...