Monte Carlo simulation of complex radiotherapy treatments

Leal, Antonio; Sánchez‐Doblado, F.; Perucha, M.; Carrasco, E.; Rincón, M.; Arráns, R.; Bernal, Celina Raquel

doi:10.1109/mcse.2004.16

Cited by 16 publications

(10 citation statements)

References 10 publications

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“…The computation times presented in this work were achieved with CARMEN installed on a HP Proliant DL585 G7 server with four processors AMD Opteron TM 6174 2.19 GHz with 12 cores (48 independent CPUs), and the simulation tasks were distributed using a coarse-grained parallelization model. 43…”

Section: B Carmen Platformmentioning

confidence: 99%

MCTP system model based on linear programming optimization of apertures obtained from sequencing patient image data maps

et al. 2014

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Section: B Carmen Platformmentioning

confidence: 99%

MCTP system model based on linear programming optimization of apertures obtained from sequencing patient image data maps

et al. 2014

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“…All simulations were carried out using 48 double-processor computers, as a part of the cluster belonging to the Medical Physics Group, Department of Medical Physiology and Biophysics, University of Seville (Leal et al 2004).…”

Section: Neutron Spectra MC Simulationsmentioning

confidence: 99%

Estimation of neutron-equivalent dose in organs of patients undergoing radiotherapy by the use of a novel online digital detector

et al. 2012

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Neutron peripheral contamination in patients undergoing high-energy photon radiotherapy is considered as a risk factor for secondary cancer induction. Organ-specific neutron-equivalent dose estimation is therefore essential for a reasonable assessment of these associated risks. This work aimed to develop a method to estimate neutron-equivalent doses in multiple organs of radiotherapy patients. The method involved the convolution, at 16 reference points in an anthropomorphic phantom, of the normalized Monte Carlo neutron fluence energy spectra with the kerma and energy-dependent radiation weighting factor. This was then scaled with the total neutron fluence measured with passive detectors, at the same reference points, in order to obtain the equivalent doses in organs. The latter were correlated with the readings of a neutron digital detector located inside the treatment room during phantom irradiation. This digital detector, designed and developed by our group, integrates the thermal neutron fluence. The correlation model, applied to the digital detector readings during patient irradiation, enables the online estimation of neutron-equivalent doses in organs. The model takes into account the specific irradiation site, the field parameters (energy, field size, angle incidence, etc) and the installation (linac and bunker geometry). This method, which is suitable for routine clinical use, will help to systematically generate the dosimetric data essential for the improvement of current risk-estimation models.

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“…In medical physics, MC methods have found special use in cancer research [12], [13]. Using MC simulations for radiotherapy simulations significantly improves the accuracy of dose calculations.…”

Section: Related Workmentioning

confidence: 99%

Improving Parallelisation of a Monte Carlo Radiotherapy Simulation Using MPI

Yaikhom

Walker

2012

2012 IEEE 26th International Parallel and Distributed Processing Symposium Workshops &Amp; PhD Forum

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In this paper we improve upon a farmer-worker parallelisation of a Monte Carlo Radiotherapy Simulation by changing its communication model. Using clusters on the Amazon EC2 cloud, and the BEAMnrc system for Monte Carlo simulations as our case study, we demonstrate experimentally the performance bottlenecks faced when using a network file system for farmer-worker communications. We then suggest an alternative approach, which uses a message passing protocol. We find that the message passing approach is able to deliver a steady performance improvement as we scale up, while also avoiding application failure due to I/O thrashing and oversubscription.

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Monte Carlo simulation of complex radiotherapy treatments

Cited by 16 publications

References 10 publications

MCTP system model based on linear programming optimization of apertures obtained from sequencing patient image data maps

MCTP system model based on linear programming optimization of apertures obtained from sequencing patient image data maps

Estimation of neutron-equivalent dose in organs of patients undergoing radiotherapy by the use of a novel online digital detector

Improving Parallelisation of a Monte Carlo Radiotherapy Simulation Using MPI

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