Value of TNR and TLR of 18F-FDG PET/CT Tumor Metabolic Imaging in Diagnosis of Lung Cancer
10.3969/j.issn.1005-5185.2016.12.015
- VernacularTitle:肿瘤/对侧肌肉比值与肿瘤/肝脏比值在18F-FDG PET/CT肿瘤代谢显像诊断肺癌中的价值
- Author:
Ying WANG
;
Pengfei YANG
;
Yanmei LI
;
Juan LI
;
Feng ZHAO
- Keywords:
Lung diseases;
Lung neoplasms;
Positron-emission tomography;
Tomography,X-ray computed;
Fluorodeoxyglucose F18;
Diagnosis,differential
- From:
Chinese Journal of Medical Imaging
2016;24(12):934-936
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To evaluate the role of 18F-FDG PET/CT tumor metabolic imaging in the detection of lung cancer lesions,using receiver operating characteristic (ROC) curves analysis and investigate the diagnostic value of TNR and TLR in lung lesions.Materials and Methods A total of 82 patients who were confirmed with lung space-occupying lesionsby 18F-FDG PET/CT tumor metabolic imaging were retrospectively analyzed.Based on the pathological gold standard,evaluate the diagnostic value of 18F-FDG PET/CT tumor metabolic imaging in lung space-occupying lesions by t-test and ROC curve.Results There was a significant difference of TNR and TLR between benign and malignant lesion (P<0.01).The AUC on ROC curve of TLR ratio was 0.943 in the lung lesions while the TNR was 0.927.The sensitivity,specificity and the accuracy were 86.36%,62.50% and 81.71%,respectively with the TNR cutoff of 6.87.The sensitivity,specificity and the accuracy were 90.91%,68.75% and 86.58%,respectively with the TLR cutoff of 2.86.Conclusion 18F-FDG PET/CT tumor metabolic imaging is useful for differentiating lung space-occupying lesions.But for cases of atypical 18F-FDG uptake,it is suggested to combine with clinical information.