CAJ | 학술논문

目的：探讨PET/CT在非小细胞肺癌纵隔淋巴结转移上的诊断价值。方法对33例术前行全身18 F-FDG PET/CT检查发现肺内病灶，并行根治性手术及系统纵隔淋巴结清扫患者的PET/CT图像进行分析，记录淋巴结短径、CT值、SUVmax等，同时对患者的图像进行视觉分析，应用PET/CT综合分析法对纵隔内淋巴结进行诊断，并与病理结果对照。结果常规CT法对纵隔内淋巴结诊断的准确率为84．1％，常规PET 法诊断的准确率为82．8％，常规PET/CT法对纵隔内淋巴结诊断的准确率为917．％， PET/CT综合分析法的诊断准确率为95．2％，只有5例良性淋巴结误诊为恶性。8例肺癌伴纵隔或肺门淋巴结转移，其中5例肺癌病灶位于肺野内带。结论18F -FDG PET/CT综合分析法对纵隔淋巴结诊断的准确率较高，优于常规CT、常规PET以及常规PET/CT法（χ2＝15．1，P＜0．05）；肺癌病灶位于肺野内带者较易发生纵隔或肺门淋巴结的转移。
목적：탐토PET/CT재비소세포폐암종격림파결전이상적진단개치。방법대33례술전행전신18 F-FDG PET/CT검사발현폐내병조，병행근치성수술급계통종격림파결청소환자적PET/CT도상진행분석，기록림파결단경、CT치、SUVmax등，동시대환자적도상진행시각분석，응용PET/CT종합분석법대종격내림파결진행진단，병여병리결과대조。결과상규CT법대종격내림파결진단적준학솔위84．1％，상규PET 법진단적준학솔위82．8％，상규PET/CT법대종격내림파결진단적준학솔위917．％， PET/CT종합분석법적진단준학솔위95．2％，지유5례량성림파결오진위악성。8례폐암반종격혹폐문림파결전이，기중5례폐암병조위우폐야내대。결론18F -FDG PET/CT종합분석법대종격림파결진단적준학솔교고，우우상규CT、상규PET이급상규PET/CT법（χ2＝15．1，P＜0．05）；폐암병조위우폐야내대자교역발생종격혹폐문림파결적전이。
Objective To explore the diagnostic performance and the distributive characteristics of me-diastinal lymph nodes in lung tumor with PET/CT examination .Methods Thirty-three cases of preoperative whole-body 18 F-FDG PET/CT examination revealed pulmonary lesions ,a radical surgery and lymph node dis-section patients were included in this study .PET/CT doctors read the image of PET/CT and recorded the lymph node short diameter,CT value,SUVmax,and analysed the patient′s visual graphics.The application of PET/CT a-nalysis was used for diagnosis of the mediastinal lymph nodes ,and compared with the pathological findings .Re-sul ts The diagnostic accuracy of mediastinal lymph nodes with the conventional CT method alone was 84 .1%, with the conventional PET method alone was 82.8%,with the conventional PET/CT analysis was 91.7%,with the PET/CT comprehensive analysis was 95.2%;Five benign lymph nodes were mis -diagnosed.In this study, there were eight cases of lung cancer with mediastinal or hilar lymph node metastasis ,all of the lymph nodes loca-ted in the right lung ,and in which five cases were in the inner zone .Conclusion The PET/CT comprehensive a-nalysis of lymph node performs better than either the CT method alone or the PET method alone (χ2 =9.10,P<0.05);The lesions in the inner zone are more prone to occur mediastinal lymph node metastasis .