2017_IGRT course book
Margin reduction? Not necessarily !
• Hodgkin Lymphoma, considering daily CBCT and INRT (PET/CT in treatment position)
• Free breathing margins: 1cm all around
• DIBH margins ➢
3mm contouring uncertainty (systematic) 2 mm breath hold uncertainty (random)
➢
➢ 3 mm image registration/ residual set up error (random)
➢
Margins = 1 cm !!!
Work in progress, courtesy of Laura Rechner, Rigshospitalet
IGRT 2015 – M. Aznar
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