关键词: X线计算机, 诊断, 发射型计算机, 体层摄影术, 体层摄影术, 肿瘤分期 , 肺肿瘤

Abstract: Objective： To investigate the clinical value of ¹⁸F-FDG PET-CT for non-small cell lung cancer in lymph node staging. Methods：¹⁸F-FDG PET-CT (Discovery LS PET-CT in Department of Radiology of Shandong Provincial Hospital) images of 79 patients who had undergone surgeries for histopathologically proved non-small cell lung cancers without distant metastases were analyzed. PET-CT results were compared with the CT data. Findings of both modalities were compared with pathological results and were statistically analyzed. Results： There were 268 lymph node metastases in 79 patients. The sensibility, specificity and accuracy of PET-CT and CT for detecting lymphoid node metastasis were 82.84%, 96.70% and 89.83% and 58.58%, 72.89% and 65.80%, respectively. The former was obviously better than the latter. Overall tumor stage was correctly classified as N stage with CT in 58 patients and with PET-CT in 73 patients. Differences in the accuracy of lymphoid node staging between PET-CT and CT were significant (χ²=10.05, P＜0.01). Conclusion： PET-CT is a very effective imaging modality for lymph node staging of nonsmall cell lung cancer.

Key words: Lung neoplasms, Tomography, emission-computed, Tomography, X-ray computed, Diagnosis, Neoplasm staging