Young Wha Koh1, Seong Yong Park2, Seung Hyup Hyun3, Su Jin Lee4. 1. Department of Pathology, Ajou University School of Medicine, Suwon, Republic of Korea. 2. Department of Thoracic and Cardiovascular Surgery, College of Medicine, Yonsei University, Seoul, Republic of Korea. 3. Department of Nuclear Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea. 4. Department of Nuclear Medicine, Ajou University School of Medicine, Suwon, Republic of Korea suesj202@ajou.ac.kr.
Abstract
BACKGROUND/AIM: We evaluated the association between positron emission tomography (PET) textural features and glucose transporter 1 (GLUT1) expression level and further investigated the prognostic significance of textural features in lung adenocarcinoma. PATIENTS AND METHODS: We evaluated 105 adenocarcinoma patients. We extracted texture-based PET parameters of primary tumors. Conventional PET parameters were also measured. The relationships between PET parameters and GLUT1 expression levels were evaluated. The association between PET parameters and overall survival (OS) was assessed using Cox's proportional hazard regression models. RESULTS: In terms of PET textural features, tumors expressing high levels of GLUT1 exhibited significantly lower coarseness, contrast, complexity, and strength, but significantly higher busyness. On univariate analysis, the metabolic tumor volume, total lesion glycolysis, contrast, busyness, complexity, and strength were significant predictors of OS. Multivariate analysis showed that lower complexity (HR=2.017, 95%CI=1.032-3.942, p=0.040) was independently associated with poorer survival. CONCLUSION: PET textural features may aid risk stratification in lung adenocarcinoma patients. Copyright
BACKGROUND/AIM: We evaluated the association between positron emission tomography (PET) textural features and glucose transporter 1 (GLUT1) expression level and further investigated the prognostic significance of textural features in lung adenocarcinoma. PATIENTS AND METHODS: We evaluated 105 adenocarcinomapatients. We extracted texture-based PET parameters of primary tumors. Conventional PET parameters were also measured. The relationships between PET parameters and GLUT1 expression levels were evaluated. The association between PET parameters and overall survival (OS) was assessed using Cox's proportional hazard regression models. RESULTS: In terms of PET textural features, tumors expressing high levels of GLUT1 exhibited significantly lower coarseness, contrast, complexity, and strength, but significantly higher busyness. On univariate analysis, the metabolic tumor volume, total lesion glycolysis, contrast, busyness, complexity, and strength were significant predictors of OS. Multivariate analysis showed that lower complexity (HR=2.017, 95%CI=1.032-3.942, p=0.040) was independently associated with poorer survival. CONCLUSION: PET textural features may aid risk stratification in lung adenocarcinomapatients. Copyright