PET and PET/CT in Treatment Planning
Positron emission tomography (PET) is a major advance in lung cancer imaging and is having an increasing impact on the management of patients with non-small cell lung cancer who are candidates for potentially-curative treatment with radiotherapy. PET imaging, using 18F-flurodeoxyglucose as the tracer, and more recently in the form of FDG-PET/CT is now the most important single imaging modality for staging, patient selection and radiotherapy planning in NSCLC. If scans are acquired under appropriate conditions and the patient is positioned for radiotherapy, a single scan can be used for all of these purposes. In this chapter the role of PET and PET/CT in staging, patient selection and radiotherapy planning are discussed. Additionally, the use of FDG-PET for response assessment is described and finally the potential value of PET tracers other than FDG is considered.