【摘要】 目的探讨¹⁸F-FDG PET/CT偶然发现的上颌骨放射性浓聚灶的影像特点及临床意义。方法回顾性分析45例PET/CT发现上颌骨牙根以外部位放射性浓聚患者的临床及影像学资料。观察上颌骨放射性浓聚灶的数目、部位、最大标准化摄取值(SUV_max)、大小、形态、密度等特点及随访变化。应用IBM SPSS软件分析病灶SUV_max与最大径、患者年龄的关系,以及随访SUV_max有无变化。结果 45例患者发现上颌骨浓聚灶49个,3个位于体部,46个位于额突,其中40个位于额突基底部,6个位于前上部。所有病变均呈磨玻璃密度,其中15个密度均匀,34个密度不均,病变内部见更低密度影。病变平均SUV_max2.64±1.07,平均最大径（0.63±0.20）cm。病变SUV_max与最大径呈正相关,与患者年龄呈负相关。12例复查PET/CT,病变SUV_max变化无统计学差异,大小、密度等形态特征均无变化。结论上颌骨偶发PET/CT放射性浓聚灶大多位于额突基底部,呈磨玻璃密度,倾向良性病变。更多还原

【Abstract】 Objective To investigate the imaging features and clinical value of maxillary hot lesions accidentally detected on ¹⁸F-FDG PET/CT imaging.Methods Forty-five patients with increased uptake on the maxillary except periodontal region on PET/CT were retrospectively analyzed.The clinical and imaging features including number,location,SUV_max（maximal standard uptake value）,size,shape and density were evaluated.IBM SPSS software was adopted to analyze the correlation of SUV_max with maximal diameter and patients’ ages,as well as the difference of SUV_maxbetween initial and follow-up scans.Results Forty-nine lesions were detected.Three lesions were located on the maxillary body,46 on frontal process,40 of which were at the base and 6anterosuperior.All lesions showed ground-glass density,15 of which were homogeneous and 34 heterogeneous.The mean SUV_max was 2.64±1.07 and maximal diameter were（0.63±0.20）cm.The SUV_maxof lesions had positive correlation with maximal diameter,negative correlation with the age.All the lesions showed stable SUV_maxand morphological features including density,size on follow-up PET/CT in 12 patients.Conclusion Most maxillary hypermetabolic lesions fortuitously detected on PET/CT are located at the base of frontal process,with ground glass density and probably benign clinical behavior.更多还原