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Time-dependent receiver operating characteristic curve analysis of distant metastasis-free survival prediction based on the SUVLN/SUVTumor ratio in 112 patients with esophageal squamous cell carcinoma (ESCC). The area under the curve was 0.754 (p < 0.01, 95% CI 0.593–0.916), and 0.39 was determined as the best SUVLN/SUVTumor ratio cutoff value for survival prediction.
