Exploració per autor "Sempau Roma, Josep"
Ara es mostren els items 26-30 de 30
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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 ...