Advanced Physics for Brachytherapy 2018
Systematic set-up uncertainties
Berger et al. 2009, R&O 93
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Same error in every fraction
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Examples
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Incorrect reconstruction procedures (source path commissioning)
CT
MR
Hellebust et al 2007, PMB 52
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Systematic misinterpretation of images
Random set-up uncertainties
Sagittal reconstruction from para-transverse MR
Sagittal reconstruction from transverse MR
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Different in every fraction Visibility of applicator (dependent on slice thickness) Uncertainties of image fusion Pronounced in longitudinal direction (perpendicular to slice orientation)
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© K. Tanderup
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