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FDG-PET/CT for delineation
Mistrangelo M, Lesc A. PET-CT in anal cancer: indications and limits. 2013:
Coregistration with
radiotherapy planning CT:
• Nodal delineation
• But not for tumor ?
MRI for tumor delineation
• Internal or external
sphincter invasion
• Levatori muscle invasion
• Vaginal invasion