NGHIÊN CỨU SUV MAX KHỐI U NGUYÊN PHÁT TRÊN PET/CT CỦA UNG THƯ PHỔI BIỂU MÔ TUYẾN

Abstract

Backgroud: Lung cancer is a fairly common malignant disease of the respiratory system. Lung cancer if detected late, very poor prognosis, very high mortality and death in a short time since the detection of the disease. PET/CT in the diagnosis and assessment of non-small cell lung cancer stage, especially lung carcinoma, is increasingly confirmed. Objective: To investigate the SUV max value of primary epithelial lung cancer on PET/CT. Object and method: 24 patients diagnosed with lung epithelial carcinoma were identified by histopathology (biopsy, surgery). Research design: Retrospective study. Materials: PET/CT Biograph True Point - Siemens - Germany. CT scan with parameters of 80mA, 140KV, rotation speed of 0.5s/tube, thickness of 4.25mm, scan length of 867mm and time of data acquisition is 22.5s. Radioactive was F-18 FDG (2-fluoro-2-deoxy-D-glucose) at dosage 0.15-0.20 mCi / kg body weight (7-12mCi) intravenously. PET/CT was performed after injection of F-18 FDG 45-60 minutes. Results: Most cases of lung carcinoma of epithelium at age> 50 years. The lowest age was 34, the highest age 74, mean age was 58.1 ± 8.1 years. Male accounts for more than women. Tumors located in the left lung or right lung with similar proportions. The smallest tumor is 2cm in diameter; the largest tumor 8.2cm; average 4.7 ± 1.9 cm. The lowest SUV max at 1.81 cm; highest 21.03 cm; average 10.8 ± 4.2 (cm). Conclusion: Determining the SUV max value is very significant in the diagnosis of adenocarcinoma of the epithelial lining, which contributes to the therapeutic orientation as well as post-treatment follow-up.