| Objective: To investigate the clinical value of 18F-FDG PET/CT for gynecological malignancies in diagnosis ,clinical staging and monitoring treatment.Methods: 18F-FDG PET/CT (Discovery LS4 PET/CT in our center) images of 33 women who had undergone surgery or chemoradiotherapy for histopathologically proven gynecological cancer between Jun,2003 and Jun,2005 were retrospectively analyzed. All women were divide into two groups: Group 117 patients doubted the malignant tumor before operation underwent PET/CT at diagnosis for staging; Group 2 16 patients,who had chemoradiotherapy for 6 months to 2 years after operation, used PET/CT for whether monitor recurrence or metastasis or not. After F-FDG with a radiochemical purity in excess of 95% was administered intravenously and a 40-minute-rest, Using a spiral plus 4 scanner an plain scan was performed for whole body with a collimation of 5mm , table speed of 22.5mm/s , 140kV , 90mA. Subsequently, PET metabolic imaging was performed initially. Emission scans were obtained with a total of 35 min acquisition time for each position using 2D mode. After the calculation of the imaging count data in terms of iterative reconstruction algorithm, the three dimensions (axial, coronary, and sagittal) imagings and fused images of PET/CT were aquired. The 18F-FDG PET/CT images were analyzed semi-quantitatively and visually by three doctors who knew both nuclear medicine... |
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