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PURPOSE The goal of this investigation was to evaluate uptake and incorporation of 2-deoxy-2-[18F]fluoro-D-glucose (FDG), 11C-methionine, and 11C-choline in 17 patients suspected of grade-II and grade-III tumors using positron emission tomography (PET) and use in vitro astrocytoma cell lines in order to support in vivo findings. METHODS Seventeen patients(More)
OBJECTIVES Despite being in use for nearly two decades, the utility of [18F]2-fluoro-2deoxy-D-glucose positron emission tomography (FDG PET) in the evaluation and treatment of brain tumors remains controversial. We retrospectively analyzed all patients with histologically proven gliomas, between the years 1990 and 2000, who underwent FDG PET studies at(More)
PURPOSE A comprehensive metabolic characterization of a patient with dysplastic gangliocytoma of the cerebellum or Lhermitte-Duclos Disease (LDD) is presented. PROCEDURES Assessment using 2-deoxy-2-[18F]fluoro-D-glucose (FDG), carbon-11-labeled methionine (11C-MET), carbon-11-labeled choline (11C-Choline) positron emission tomography (PET), and 1H-proton(More)
UNLABELLED The aim of this study was to compare the grading and prognostic value of l-[methyl-(11)C]-methionine ((11)C-MET) PET in glioma patients with (18)F-FDG PET and contrast-enhanced MRI. METHODS Patients (n = 102) with histopathologically confirmed gliomas were followed up for an average of 34.6 ± 3.8 mo after PET. The median survival was 18 ± 4.7(More)
Limited information is available on the mechanism by which changes in nutrient intake influence plasma lipids. We compared the effects on plasma lipoprotein levels of 3 dietary modifications involving changes in total fat intake (27-40% of calories), cholesterol intake (100-250 mg/1000 kcal), the dietary polyunsaturated to saturated fatty acid ratio(More)
PURPOSE PET scanning of the brain with F-18 FDG and C-11 methionine (MET) is useful for characterizing brain lesions discovered at MRI or CT. Most positive PET scans indicate malignancy. However, this case report demonstrates positive F-18 FDG and C-11 MET PET scans in a patient with a nonmalignant condition, neurosarcoidosis. MATERIALS AND METHODS We(More)
Multimedia conferencing services have specific performance requirements with respect to the exchange of continuous media. One of these requirements is the synchronization within and between related streams. This article identifies synchronization requirements and solutions relevant for conferencing services that operate in an open distributed environment as(More)
Distal renal tubular acidosis (RTA) is known to cause metabolic bone abnormalities. For the first time to our knowledge, a case of distal RTA is reported in association with a superscan on bone scintigraphy. Reported cases of metabolic bone diseases producing a superscan appearance were reviewed, and underlying mechanisms are discussed. We speculate that(More)