FDG uptake was semiquantitated by determination the activity per pixel on the region of interest (ROI) curve and the T/NT were calculated after scan.

• 当肿块直径为05-1.；6cm时，行~(18)F-FDG-PET扫描，以肿瘤和正常组织相同大小感兴趣区每个像素的放射性记数为分析FDG摄取量的半定量分析指标，同时计算各组的T/NT值。