Comparative Diagnostic Performance of Digital Versus Analog PET/CT for Lymph Node Metastases and Glut-1 Correlation in Resected Non-Small Cell Lung Cancer.

The lack of a significant difference in patients with grade 1 adenocarcinoma is likely due to the small number of cases. In regard to the SUVmax values versus tumor size in the preoperative CT images, digital PET/CT showed significantly higher SUVmax values as compare with analog PET/CT in tumors measuring 1.1 to 2.0 cm in diameter (D/A ratio = 3.42, p = 0.002) as well as in those measuring 2.1 to 3.0 cm in diameter (D/A ratio = 2.10, p < 0.001); although the sample size was limited and the difference did not reach statistical significance, a 4.48-fold increase was also observed for tumors smaller than 1.0 cm in diameter.

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