title: PET and PET-CT in radiation treatment planning for lung cancer.
abstract: This review analyzes PET images in radiotherapy treatment planning for lung cancer patients and discusses the most controversial current issues. Computed tomography images are commonly used to assess location and extension of target volumes and organs at risk in radiotherapy treatment planning. Although PET is more sensitive and specific, contouring on PET images is difficult because tumor margins are indistinct, due to heterogeneous (18)fluorodeoxyglucose uptake distribution and limited spatial resolution. The best target delineation criteria have not yet been established. In non-small-cell lung cancer, PET appears to improve sparing of organs at risk and reduce the risk of toxicity; prescribed doses can be increased. Data are scarce on small-cell lung cancer.
authors.affiliation: Radiation Oncology Section, Department of Surgical, Radiological and Odontostomatological Sciences, University of Perugia, Ospedale Santa Maria della Misericordia, Sant'Andrea delle Fratte, 06156 Perugia, Italy. cynthia.aristei@unipg.it
authors.forename: Cynthia
authors.initials: C
authors.lastname: Aristei
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Falcinelli
authors.forename: Barbara
authors.initials: B
authors.lastname: Palumbo
authors.forename: Roberto
authors.initials: R
authors.lastname: Tarducci
mesh_terms: D002289:Carcinoma, Non-Small-Cell Lung / Q000473:pathology / Q000532:radiotherapy; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology / Q000532:radiotherapy*; D049268:Positron-Emission Tomography / Q000379:methods*; D011829:Radiation Dosage; D011832:Radiation Injuries / Q000517:prevention & control; D019275:Radiopharmaceuticals; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18