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- W2514489847 abstract "BACKGROUND: CT scan provides information about the anatomy and morphology, may confirm whether the change is single or has multifocal character and may suggest the probability of malignancy. Due to increased metabolism, at PET examination malignant tissues usually show a greater uptake of 18F-FDG than benign changes and healthy tissue. In several cases, PET-CT is described only by a specialist in nuclear medicine without consulting a radiologist. The aim of this study is to evaluate the accuracy of PET with assessment performed by a single nuclear medicine specialist and multidisciplinary assessment by both nuclear medicine and radiology specialists. MATERIALS AND METHODS: PET-CT was performed in 58 consecutive patients referred from John Paul II Hospital in Cracow because of radiologically diagnosed solitary pulmonary nodule (SPN) with diameter > 1 cm. An histopatological specimen was obtained in 37 patients. In 17 cases PET-CT images were evaluated by a single nuclear medicine specialist (group A), while for the remaining 20 cases, the image evaluation was performed shoulder-to-shoulder by a nuclear medicine specialist and a radiologist (group B). ANALYSIS OF DATA: Overall PET sensitivity, specificity, positive and negative predictive value and accuracy were calculated on the basis of anatomopathologic results. These data were also calculated separately for groups A and B. RESULTS: The histopatologic examination demonstrated the non neoplastic character of 7/37 lesions. The sensitivity, specificity, accuracy, positive and negative predictive values for group A were 85.7%, 100%, 100%, 33.3% and 88% while for group B were 92.8%, 83.3%, 92.8%, 83.3% and 90% respectively. CONCLUSION: PET-CT is an accurate diagnostic method to assess the nature of solitary pulmonary nodules. The consultation with radiologist does not substantially affect the PET-CT diagnostic accuracy, but can lead to a higher negative predictive value." @default.
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- W2514489847 date "2012-01-01" @default.
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- W2514489847 title "PET-CT evaluation of solitary pulmonary nodules: with or without a radiologist?" @default.
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