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- W1520658723 abstract "The aim of this study was to evaluate the use of delayed pelvic (18)F-2-fluoro-2-deoxy-D-glucose-positron emission tomography combined with the computed tomography (FDG-PET/CT) imaging, according to a standardized protocol including, pre-hydration and forced diuresis, for the detection of primary bladder cancer.We evaluated 38 consecutive patients with primary cT1-4 bladder cancer. They underwent standard FDG-PET/CT followed by delayed pelvic imaging after administration of 20 mg furosemide intravenously and extra oral water intake of 0.5 L. Two observers, blinded for patient data, scored both image sets for tumor visibility using a 3-point ordinal scale: (1) negative; (2) indeterminate; (3) positive. FDG-PET/CT findings were compared with histopathology and/or follow-up imaging.The procedure was completed successfully in 37/38 patients and the reference standard revealed a bladder tumor in 26/37 patients. Delayed PET/CT images showed reduction of urinary bladder activity to (near) background levels in 17 of 37 cases (45.9%). Standard PET/CT detected hyper-metabolic bladder lesions in 15/37 patients (40.5%) of which 8 were indeterminate. Delayed FDG-PET/CT showed hyper-metabolic bladder lesions in 30/37 (81.1%) patients, of which 5 were indeterminate. When indeterminate lesions were considered positive, the sensitivity of standard and delayed PET/CT was 46% versus 88%, respectively. The specificity was 72% versus 36%. When indeterminate lesions were considered negative, the sensitivity of standard and delayed PET/CT was 23% and 85%. The specificity was 93% versus 73%.Our data suggest that delayed pelvic FDG-PET/CT imaging after forced detects more primary bladder tumors than standard FDG-PET/CT protocols. However, indeterminate bladder lesions on delayed PET/CT remain a problem and should be interpreted cautiously in order to avoid false positive results." @default.
- W1520658723 created "2016-06-24" @default.
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- W1520658723 date "2012-07-01" @default.
- W1520658723 modified "2023-10-03" @default.
- W1520658723 title "Detecting primary bladder cancer using delayed (18)F-2-fluoro-2-deoxy-D-glucose-positron emission tomography/computed tomography imaging after forced diuresis." @default.
- W1520658723 doi "https://doi.org/10.4103/0972-3919.112718" @default.
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