Modern Bt Techniques - Florence 2016

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