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Dose Calculation Algorithms - Oncology Medical Physics
https://oncologymedicalphysics.com/dose-calculation-algorithms/
Steps in computing convolution/superposition dose Model primary photons incident on the phantom/patient.. A finite source size and location is determined in commissioning. Ray-tracing projects fluence through the phantom/patient.. TERMA is calculated from fluence and mass attenuation coefficient.. ...
Accelerated ray tracing for radiotherapy dose …
https://pubmed.ncbi.nlm.nih.gov/19810482/
Ray tracing was accelerated, on average, with a factor of 6 for the evaluated cases. Dose calculation for a single beam can typically be carried out in 0.6-0.9 s for clinically realistic datasets. These findings can be used in conventional planning to …
Ray-tracing in three dimensions for calculation of …
https://www.osti.gov/biblio/5324749-ray-tracing-three-dimensions-calculation-radiation-dose-calculations-master-thesis
title = {Ray-tracing in three dimensions for calculation of radiation-dose calculations. Master's thesis}, abstractNote = {This thesis addresses several methods of calculating the radiation-dose distribution for use by technicians or clinicians in radiation-therapy treatment planning. It specifically covers the calculation of the effective pathlength of the radiation beam for use in …
Evaluation of ray tracing and Monte Carlo algorithms in …
https://pubmed.ncbi.nlm.nih.gov/29296387/
While Monte Carlo (MC) calculation methods are the most accurate, Ray Tracing (RT) methods are also commonly employed. We evaluated dose calculation differences between the RT and MC algorithms in central and peripheral lung tumors treated with CyberKnife SBRT to determine which planning parameters may predict dose differences.
Tools for Calculating Radiation Dose and Risk | US EPA
https://www.epa.gov/radiation/tools-calculating-radiation-dose-and-risk
EPA bases its radiation protection activities on scientific assessment of health risks posed by radioactive substances. EPA's science-based tools help radiation protection professionals calculate radiation dose and risk riskThe probability of injury, disease or death from exposure to a hazard. Radiation risk may refer to all excess cancers caused by radiation …
Review of Deposited Dose Calculation Methods Using …
https://ieeexplore.ieee.org/document/4723787/
Abstract: Deposited dose values calculated, from two ray tracing methods are compared to 3D Monte Carlo Adjoint (reverse) results, for both simple and complex geometries. Results are analyzed, ray tracing accuracy discussed, and hardness assurance modification proposed.
Accelerated ray tracing for radiotherapy dose calculations on a …
https://aapm.onlinelibrary.wiley.com/doi/full/10.1118/1.3190156
With the use of a GPU, ray tracing for dose calculations can be performed accurately in considerably less time. Ray tracing was accelerated, on average, with a factor of 6 for the evaluated cases. Dose calculation for a single beam can typically be carried out in for clinically realistic datasets. These findings can be used in conventional planning to enable …
Accelerated ray tracing for radiotherapy dose …
https://aapm.onlinelibrary.wiley.com/doi/abs/10.1118/1.3190156
With the use of a GPU, ray tracing for dose calculations can be performed accurately in considerably less time. Ray tracing was accelerated, on average, with a factor of 6 for the evaluated cases. Dose calculation for a single beam can typically be carried out in for clinically realistic datasets. These findings can be used in conventional planning to enable …
RAYSTATION DOSE CALCULATION ALGORITHMS
https://www.raysearchlabs.com/siteassets/about-overview/media-center/wp-re-ev-n-pdfs/white-papers/white-paper-7---dose-calculation-aug-2015.pdf
Dose calculation: RayStation uses the VMC++ [11] code for the in-patient dose calculation. The VMC++ code is optimized for three- dimensional dose calculations in voxel-geometries. The code solves the coupled photon/electron/positron transport problem and is thus capable of calculating dose distributions for electron beams as well
Online Radiation Dose Calculators - Radiologyinfo.org
https://www.radiologyinfo.org/en/info/safety-dose-calculators
Other websites offer online tools that allow users to "calculate" a total radiation dose for up to multiple exams. However, dose charts and calculators provide only typical estimates of radiation dose. They do not provide the actual dose individual patients receive. Radiologists use the lowest amount of radiation necessary to perform a ...
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