18F-FDG PET-CT显像诊断非小细胞肺癌的价值

目的 探讨18F-FDG PET-CT显像诊断非小细胞肺癌(NSCLC)的价值.方法 对2004年2月至2005年5月91例NSCLC和10例肺良性病变患者的PET-CT检查结果、临床诊断和治疗资料进行分析.结果 91例NSCLC病灶标准摄取值(SUV)均阳性,PET-CT均能正确诊断.10例肺良性病变,SUV阳性3例,包括结核2例和炎性假瘤1例,SUV阴性7例.PET-CT正确诊断9例,1例结核患者PET-CT误诊为肺癌.PET-CT显像诊断NSCLC的敏感性、特异性和准确性分别为100%、90%和99%.91例NSCLC根治手术治疗48例.纵隔淋巴结转移30例,PET-CT正确诊断28例,假阴性2例.纵隔淋巴结无转移18例,PET-CT正确诊断17例,假阳性1例.PET-CT显像诊断NSCLC纵隔淋巴结转移的敏感性、特异性和准确性分别为93.3%、94.4%和93.8%.远处转移33例,PET-CT均能正确诊断.结论 PET-CT显像融合了功能代谢和图像解剖,对肺原发灶和其他脏器的转移能作出正确的诊断.对NSCLC诊断的准确性达90%以上.

Value of integrated PET-CT with 18F-FDG in the diagnosis of non-small-cell lung cancer

Objective To investigate the value of integrated PET-CT with 18F-FDG in the diagnosis of non-small cell lung cancer.Methods 91 patients with non-small-cell lung cancer(NSCLC)and 10patients with benign disease underwent integrated PET-CT from February 2004 to May 2005.Other diagnostic procedures were analysed. Results 91 patients with lung cancer were found by positive SUV and pathologically confirmed.Of the 10 patients with benign disease.positive SUV were found in 3 cases.2 cases with tuberculosis and 1 case with inflammatory pseudotumor were confirmed.Negative SUV were found in 7cases.1 case was incorrectly diagnosed by integrated PET-CT.The sensitivity,specificity and accuracy of integrated PET-CT in the diagnosis of NSCLC were 100%,90%,99%,respectively.Forty-eight of 91patients with lung cancer underwent operation.There were 30 cases with and 18 cases without mediastinal nodal metastases.There were two false negative cases and one false positive case.The sensitivity,specificity and accuracy of integrated PET-CT in the diagnosis mediastinal nodal metastases were 93.3%,94.4%,93.8%.respectively.Metastases were identified in 33 cases.Conclusion Functional metabolism and anatomy imaging are fused in integrated PET-CT.The primary site and metastases lesion are correctly diagnosed by integrated PET-CT.The accuracy of integrated PET-CT in the diagnosis of NSCLC is over 90%.