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Uncertainties and Errors
Systematic errors
– Have the same influence in every brachytherapy fraction
• Errors in application commissioning process
• MR distorsions
• Incorrect reconstruction procedure
• Magnification errors
Random errors
– Uncertainties that differ between brachytherapy sessions
• Visibility of the applicator
• Accuracy of image fusion
• MR distorsions related to patient specific interaction with
magnetic field