RT Journal Article
T1 Phase space determination from measured dose data for intraoperative electron radiation therapy
A1 Jiménez Herranz, María Elena
A1 López Herraiz, Joaquín
A1 Ibáñez García, Paula Beatriz
A1 Pérez Liva, Mailyn
A1 Puebla, Ricardo
A1 Cal González, Jacobo
A1 Guerra, Pedro
A1 Rodríguez, Raúl
A1 Illana, Carlos
A1 Udías Moinelo, José Manuel
AB A procedure to characterize beams of a medical linear accelerator for their use in Monte Carlo (MC) dose calculations for intraoperative electron radiation therapy (IOERT) is presented. The procedure relies on dose measurements in homogeneous media as input, avoiding the need for detailed simulations of the accelerator head. An iterative algorithm (EM-ML) has been employed to extract the relevant details of the phase space (PHSP) of the particles coming from the accelerator, such as energy spectra, spatial distribution and angle of emission of particles. The algorithm can use pre-computed dose volumes in water and/or air, so that the machine-specific tuning with actual data can be performed in a few minutes. To test the procedure, MC simulations of a linear accelerator with typical IOERT applicators and energies, have been performed and taken as reference. A solution PHSP derived from the dose produced by the simulated accelerator has been compared to the reference PHSP. Further, dose delivered by the simulated accelerator for setups not included in the fit of the PHSP were compared to the ones derived from the solution PHSP. The results show that it is possible to derive from dose measurements PHSP accurate for IOERT MC dose estimations.
PB IOP Publishing
SN 0031-9155
YR 2015
FD 2015
LK https://hdl.handle.net/20.500.14352/100113
UL https://hdl.handle.net/20.500.14352/100113
LA eng
NO Herranz, E., Herraiz, J. L., Ibáñez, P., Pérez-Liva, M., Puebla, R., Cal-González, J., ... & Udías, J. M. (2014). Phase space determination from measured dose data for intraoperative electron radiation therapy. Physics in Medicine & Biology, 60(1), 375.
NO Comunidad de Madrid
NO Ministerio de Ciencia e Innovación (España)
NO European Commission
DS Docta Complutense
RD 30 jul 2025