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CONCLUSION
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Broadbeam methods
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Accurate ONLY for simple fields, homogeneous volumes.
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Pencil beam algorithm
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Used to overcome limitations with irregular fields, only AAA takes
lateral scatter into account
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Convolution algorithms
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Provide high accuracy with inhomogeneities
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Monte Carlo
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Solution of the Boltzman transport equation
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Please get to know your planning system’s
dose algorithm and it’s limitations
ESTRO physics course,
June 2017