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Article: Lesion-to-background ratio in nonattenuation-corrected whole-body FDG PET images
- Article from:
- The Journal of Nuclear Medicine
- Article date:
- July 1, 1998
- Author:
CopyrightCopyright Society of Nuclear Medicine Jul 1998. Provided by ProQuest LLC. (Hide copyright information)
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The purpose of this study was to compare the diagnostic efficacy of attenuation-corrected and nonattenuation-corrected whole-body 18F-fluorodeoxyglucose (FDG) PET images to determine an adequate method that can semiquantitatively evaluate nonattenuationcorrected images. Methods: Whole-body PET studies were performed in 24 fasting patients with various tumors (lung cancers, n = 18; mediastinal tumors, n = 4; breast cancers, n = 2) 30-40 min after a bolus injection of 18F-FDG. Transmission scans followed emission data acquisition. Reconstructed attenuation-corrected and uncorrected images were displayed simultaneously and the relative FDG uptake in lesions and corresponding background areas ...