2017 Imaging for Physicists Coursebook

Image registration

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Misregistration in PET/CT can occur:

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CT-series of PET/CT represents reference frame

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Image registration may be required

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In multimodal delineation applications (e.g. +MRI)

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If PET/CT is not acquired in RT setting (then coreg. with

planning CT)

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For IGRT with e.g. CBCT

Axial fused FDG PET–CT image

of axilla incl. lymph node