ESTRO course on Image Guided Radiotherapy in Clinical Practice 2018

How big a problem is it?

• For a bladder tumour at dome • Systematic errors ∑ ➢ translation 10 mm ➢ Rotation/shape 3mm • Random errors  ➢ Translation 10mm ➢ Rotation/shape 3mm • According to ‘margin recipe’ • [Van Herk equation 2.5 ∑ + 0.7  ] = 4cm margin

Meijer NKI ESTRO 2010