Browsing School of Physics by Author "Foley, Mark J."
Now showing items 1-7 of 7
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Accounting for the fringe magnetic field from the bending magnet in a Monte Carlo accelerator treatment head simulation
O' Shea, Tuathan P.; Foley, Mark J. (American Institute of Physics, 2011)Purpose: Monte Carlo (MC) simulation can be used for accurate electron beam treatment planning and modeling. Measurement of large electron fields, with the applicator removed and secondary collimator wide open, has been ... -
Characterization of an extendable multi-leaf collimator for clinical electron beams
O'Shea, Tuathan P.; Foley, Mark J. (Institute of Physics, 2011)An extendable x-ray multi-leaf collimator (eMLC) is investigated for collimation of electron beams on a linear accelerator. The conventional method of collimation using an electron applicator is impractical for conformal, ... -
Design and performance of a small-animal imaging system using synthetic collimation.
Havelin, R. J.; Foley, Mark J. (Institute of Physics, 2013-02-28)This work outlines the design and construction of a single-photon emission computed tomography imaging system based on the concept of synthetic collimation. A focused multi-pinhole collimator is constructed using ... -
Electron beam therapy at extended SSD: a Monte Carlo investigation of output fom a Siemens Oncor linear accelerator
Foley, Mark J.; O'Shea, T. P.; Downes, Patrick A.; Shearer, Andrew (2008)Electron-beam therapy is used to treat superficial tumors at a standard 100 cm source-to-surface distance (SSD). However, certain clinical situations require the use of an extended SSD. In the present study, Monte Carlo ... -
Improved simulation of small electron fields for external beam radiation therapy
Foley, Mark J.; O'Shea, T. P.; Faddegon, B. A. (2009)This paper reports on improved simulation of small electron fields from a Siemens Primus linear accelerator. Accelerator simulation was performed using the Monte Carlo user code BEAMnrc. Source and geometry parameters ... -
An investigation into the use of MMCTP to tune accelerator source parameters and testing its clinical application.
Foley, Mark J.; Conneely, Elaine (2013)This paper presents an alternative method to tune Monte Carlo electron beam parameters to match measured data using a minimal set of variables in order to reduce the model setup time prior to clinical implementation of the ... -
Monte Carlo commissioning of clinical electron beams using large field measurements
O'Shea, Tuathan P.; Foley, Mark J. (Institute Of Physics (IOP Publishing), 2010-07-21)Monte Carlo simulation can accurately calculate electron fluence at the patient surface and the resultant dose deposition if the initial source electron beam and linear accelerator treatment head geometry parameters are ...