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[目的]探讨18F-FDGPET/CT显像对肿瘤纵隔淋巴结转移的诊断价值。[方法]回顾性分析2007年7月至2009年7月56例进行18F-FDGPET/CT检查发现纵隔淋巴结异常的肿瘤患者资料。[结果]18F-FDGPET/CT显像诊断纵隔淋巴结转移的灵敏度98.17%(107/109),特异性81.82%(9/11),准确率96.67%(116/120);而CT诊断的灵敏度69.72%(76/109),特异性63.64%(7/11),准确率69.17%(83/120)。肿瘤纵隔淋巴结转移直径较大,其代谢程度较高,主要分布在4区及7区。[结论]18F-FDGPET/CT显像在肿瘤纵隔淋巴结转移的诊断中具有重要价值。
[Objective] To investigate the diagnostic value of 18F-FDG PET / CT in diagnosis of mediastinal lymph node metastasis. [Methods] The data of 56 cancer patients who had abnormal mediastinal lymph nodes from 18 July 2007 to July 2009 were retrospectively analyzed. [Results] The sensitivity of 18F-FDG PET / CT in the diagnosis of mediastinal lymph node metastasis was 98.17% (107/109), specificity was 81.82% (9/11) and the accuracy was 96.67% (116/120). The sensitivity of CT diagnosis was 69.72 % (76/109), specificity 63.64% (7/11), accuracy rate of 69.17% (83/120). Mediastinal lymph node metastasis larger diameter, the higher the degree of metabolism, mainly in 4 and 7 areas. [Conclusion] 18F-FDG PET / CT imaging is of great value in the diagnosis of mediastinal lymph node metastasis.