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Results for "physical isocenter": 6 found

4D Monte Carlo Dose Evaluation for Mobile Targets in a Magnetic Field

Authors: Odunola Grace Babawale, B. Gino Fallone, Alireza Gazor, Andrei D. Ghila, Patricia A. K. Oliver, Michael W. Reynolds, Keith D. Wachowicz, Tania Rosalia Wood, Shima Y. Tari, Eugene Yip, Jihyun Yun

Affiliation: Nova Scotia Health, Dept. of Medical Physics and Dalhousie University, Dept. of Physics and Atmospheric Science, Dept. of Radiation Oncology, Dept. of Medical Physics, Cross Cancer Institute and Dept. of Oncology, University of Alberta; MagnetTx Oncology Solutions, www.magnetTX.com, Department of Medical Physics, Arthur J. E. Child Comprehensive Cancer Centre, Dept. of Medical Physics, Cross Cancer Institute and Dept. of Oncology, University of Alberta, Department of Medical Physics, BC Cancer, Medical Physics Division, Department of Oncology, University of Alberta and Department of Medical Physics, Cross Cancer Institute

Abstract Preview: Purpose: To evaluate the dose to a moving target and its surroundings in a magnetic field using 4D-Monte-Carlo (MC) simulation.
Methods: The study utilizes a previously validated MC model of our li...

Dosimetry of Gamma Knife Stereotactic Radiosurgery Tissue Heterogeneity Corrections for Pituitary Adenomas

Authors: James M. Brindle, Gene A. Cardarelli, Alexis Leuci, Mark J. Rivard

Affiliation: Warren Alpert Medical School of Brown University

Abstract Preview: Purpose: Leskell GammaPlan (LGP) is equipped with the Collapsed Cone Convolution (CCC) and TMR10 calculation algorithms. Use of the CCC algorithm accounts for tissue heterogeneities not considered in ...

Evaluating the Aktina Isopoint System for Quality Assurance in Linear Accelerators

Authors: Blessing Chinelo Akah, Daniel W. Neck, David J. Perrin, Sotirios Stathakis

Affiliation: Mary Bird Perkins Cancer Center

Abstract Preview: Purpose: To assess the reliability of the Aktina Isopoint software in evaluating different components of the linear accelerator for optimized quality assurance and linac performance
Methods: The Ak...

Evaluation of the Isopoint System for Coincidence of Radiation and Physical Isocenter Checks of Linear Accelerators

Authors: Peter Balter, Thomas Alexander Cuthbert, Weiliang Du, Song Gao, Nicholas Zacharopoulos

Affiliation: Aktina Medical Corp, The University of Texas MD Anderson Cancer Center

Abstract Preview: Purpose: The purpose of this study is to evaluate the accuracy and reproducibility of a commercial product for verifying the size, location, and coincidence of physical isocenter (P_iso) and radiation...

Multi-Vendor Linac Isocenter Evaluation: Implications for SRS in Radiotherapy

Authors: Blessing Chinelo Akah, Brad Barhorst, Daniel W. Neck, David J. Perrin, Chad Robertson, Sotirios Stathakis

Affiliation: Mary Bird Perkins Cancer Center

Abstract Preview: Purpose: To evaluate the performance and radiation isocenter of Elekta and Varian linear accelerator using Aktina Isopoint.
Methods: The Aktina Isopoint was used to measure the physical and radiati...

Safety of Off-Axis Treatment for Selection of Optimal Beam Angles in SBRT of the Posteriorly Located Lung Lesions

Authors: Reza Farjam, Russell K Hales, Todd R. McNutt, Mohammad Rezaee, Ehsan Tajikmansoury, K. Ranh Voong

Affiliation: Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, Johns Hopkins University

Abstract Preview: Purpose: Optimal beam angles and off-axis isocenter selection are important to achieve high quality plan and collision-free delivery in stereotactic body radiotherapy (SBRT) of the posteriorly located...