Node/Aorta and Node/Liver SUV Ratios from 18F-FDG PET/CT May Improve the Detection of Occult Mediastinal Lymph Node Metastases in Patients with Non-Small Cell Lung Carcinoma

Compared to node SUV alone, the use of node/aorta and node/liver SUV ratios resulted in improved detection of N2 metastases. The two SUV parameters may potentially improve the diagnostic accuracy of 18F-FDG PET/CT for the diagnosis of N2 disease in patients with non-small-cell lung carcinoma.