Clinical considerations of Monte Carlo for electron radiotherapy treatment planning

Faddegon, Bruce A.; Balogh, J; MacKenzie, Robert; Scora, Daryl

doi:10.1016/s0969-806x(98)00103-0

Cited by 56 publications

(52 citation statements)

References 22 publications

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“…Phase-space information was scored at 90 cm SSD. Simulation of the final beam defining aperture and water phantom dose calculations were performed using the Monte Carlo EGSnrc code MCRTP [5]. The cerrobend inserts were simulated replacing the open applicator brass scraper bars.…”

Section: Methodsmentioning

confidence: 99%

Improved simulation of small electron fields for external beam radiation therapy

et al. 2009

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Abstract-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 used were obtained from previous measurements and simulation of the linear accelerator with maximum electron field size (40 40 cm 2 ). Careful measurements of electron dose distributions were performed for fields ranging from an open 25 25 cm 2 electron applicator to a 10 10 cm 2 applicator containing a 1 cm diameter cerrobend insert. Monte Carlo calculated and measured data generally matched to within 2 % or 1 mm. This study has used improved source and treatment head simulation parameters and exacting measurements to closely match measured and simulated dose distributions for small electron fields.

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Section: Methodsmentioning

confidence: 99%

Improved simulation of small electron fields for external beam radiation therapy

et al. 2009

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“…The extent of variation depended on the actual construction and geometry of the heterogeneous phantoms. Faddegon et al (1998) described their work on implementing Monte Carlo for electron beam treatment planning at the Toronto-Sunnybrook Regional Cancer Center (T-SRCC). Beam data for their current clinical implementation consisted entirely of full phase space data sets simulated using the EGS4/BEAM code (Rogers et al 1995a).…”

Section: C-m Ma and S B Jiangmentioning

confidence: 99%

Energy-and Intensity-Modulated Electron Beam for Breast Cancer Treatment

Boyer¹

2003

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“…Because of its significance and the large number of applications, the OMEGA BEAM system will be described in detail in a separate section. We also discuss the modelling of Monte Carlo simulated electron beams using different source models, which is one approach to form the link between the Monte Carlo simulation of clinical electron beams and Monte Carlo treatment planning , b,c, Ma et al 1997a, Faddegon et al 1998, Ma 1998, Jiang et al 1999. Finally, we discuss some existing problems and possible future directions for Monte Carlo simulation of the clinical electron beams generated by medical accelerators.…”

Section: R3mentioning

confidence: 99%

Section: R21mentioning

confidence: 99%

“…After spending substantial effort in commissioning, they still had unresolved discrepancies of 3% (or 2 mm in isodose lines) in the measured and calculated dose distributions (Faddegon et al 1998). They considered it likely to be sufficient to weight the beam data with some simple, slowly varying functions of energy and position to improve the calculation accuracy from a clinical perspective.…”

Section: The Work Of the T-srcc Groupmentioning

confidence: 99%

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Air Power in MOOTW: A Critical Analysis of Using No-Fly Zones to Support National Objectives

McKelvey¹

1997

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Washington Headquarters Senvices, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and AUTHOR(S)Chang Ming Ma, Ph.D. Approved for public release distribution unlimited PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)8 ABSTRACT (Maximum 200 Words)This project is aimed at exploring energy-and intensity-modulated radiotherapy (EIMRT) to deliver dose distributions that closely match the target volume and minimize the dose to critical normal structures. The scope includes (1) to characterize electron beams from Helium-filled accelerators for EIMRT, (2) to develop optimization algorithms for EIMRT using these electron beams, (3) to verify these optimized dose distributions using the Monte Carlo simulation technique, and (4) to compare the optimized dose plans obtained by EIMRT with conventional treatment plans and those obtained by photon intensitymodulated radiotherapy (IMRT).During the first year research, we have performed accurate Monte Carlo simulations of the electron beams in He-filled accelerators. Our results demonstrated that electron beams could be modulated to deliver superior dose distributions for EIMRT. We have implemented practical source models for clinical application and beam commissioning. Different dose algorithms have been compared for "Inverse treatment planning" beamlet calculations. The results confirmed that the Monte Carlo method is needed to generate the dose distributions for EIMRT. Further studies will be performed to verify the dose plans for realistic patients. The outcome will determine whether EIMRT offers a significant advantage over conventional photon/electron treatment and over photon IMRT.14. SUBJECT TERMS IntroductionRadiation therapy has been used for the treatment of all stages of localized breast cancer. Breast conservation with lumpectomy followed by radiation (BCT) has proven to be effective for early stage (TI -T2) patients. This project is aimed at exploring energy-and intensity-modulated electron beams to deliver optimized conformal radiotherapy dose distributions that closely match the target volume and minimize the dose to critical normal structures. The specific aims are (1) to characterize electron beams from Helium-filled accelerators, (2) to develop optimization algorithms for energy-and intensity-modulated radiotherapy (EIMRT) using these electron beams, (3) to verify these optimized dose distributions using the Monte Carlo simulation technique, and (4) to compare the optimized dose plans obtained by EIMRT with conventional treatment plans and those obtained by...

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Clinical considerations of Monte Carlo for electron radiotherapy treatment planning

Cited by 56 publications

References 22 publications

Improved simulation of small electron fields for external beam radiation therapy

Improved simulation of small electron fields for external beam radiation therapy

Energy-and Intensity-Modulated Electron Beam for Breast Cancer Treatment

Air Power in MOOTW: A Critical Analysis of Using No-Fly Zones to Support National Objectives

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