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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: The role of 18F-FDG-PET/CT in the preoperative staging and posttherapy follow up of gastriccancer:Comparison with spiral CT | Ozkan et al. World Journal of Surgical Oncology 2011 9 75 http www.wjso.eom content 9 1 75 7 WORLD JOURNAL OF SURGICAL ONCOLOGY RESEARCH Open Access The role of 18F-FDG-PET CT in the preoperative staging and posttherapy follow up of gastriccancer Comparison with spiral CT Elgin Ozkan Mine Araz Cigdem Soydal and Ozlem N Kucuk Abstract Background The aim of this study was to investigate the role of F-18 fluoro-deoxy-glucose FDG positron emission tomography and computed tomography PET CT in the preoperative and posttherapy restaging of gastric cancer and to compare with spiral computerized tomography CT . Method A total of 42 PET CT scans of 36 gastric cancer patients 28M 8F mean age 56 0 15 were included in the study. A retrospective analysis of the PET CT results of the patients were compared with concurrent CT results. Confirmation was made by clinical course and serial imaging studies in the follow up. The compatibility ratios were calculated and the accuracy of the PET CT was assessed. Agreement between PET CT and concurrent CT was calculated using kappa statistics. Results Patients were separated into 3 groups the patients who were referred to our clinic for preoperative staging 4 patients for posttherapy evaluation 24 patients and for the suspicion of local recurrence and or metastasis exploration after a disease free period 8 patients . Groups 1 and 3 included a small number of patients so they were omitted from the statistical analysis. Focusing on Goup 2 the overall concordance rate was 50 12 patients . Region based analysis showed the rates of concordance for local recurrence local lymph node metastasis and distant metastasis were 91 Kappa 0.70 95 Kappa 0.86 and 50 Kappa 0.26 respectively. Distant metastases were also investigated in detail and the two techniques showed a concordance of 91 Kappa 0.75 for liver 79 Kappa 0.31 for distant lymph node 79 0.42 for lung 87 Kappa 0.33 for bone and 95 for intestinal wall metastasis. Conclusion PET CT is a .
