The Registration of Diagnostic versus Planning Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography in Radiotherapy Planning for Non-small Cell Lung Cancer

There is an average of 4 mm of misregistration when registering the CT components of PET/CT scans to the rCT for NSCLC. Using a rigid registration technique, the registration of a diagnostic PET/CT is as good as the registration of a planning PET/CT.