FDG-PET-Based Radiotherapy Planning in Lung Cancer: Optimum Breathing Protocol and Patient Positioning-An Intraindividual Comparison

Significantly better fusion of PET and planning CT can be reached with PET acquired in the RT position. The best intraindividual fusion results are obtained with the planning CT performed during mid-breath hold. Our data justify the acquisition of a separate planning PET in RT treatment position if only a diagnostic PET scan is available.