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 complementary imaging method which can be successfully used in both preoperative and posttherapy evaluation of gastric cancer.
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 cancerpatients (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 complementary imaging method which can be successfully used in both preoperative and posttherapy evaluation of gastric cancer.
Authors: Seok-Ki Kim; Keon Wook Kang; Jong Seok Lee; Hark Kyun Kim; Hee Jin Chang; Jin Yi Choi; Jun Ho Lee; Keun Won Ryu; Young-Woo Kim; Jae-Moon Bae Journal: Eur J Nucl Med Mol Imaging Date: 2005-10-15 Impact factor: 9.236
Authors: Christian R Habermann; Florian Weiss; Rasmus Riecken; Human Honarpisheh; Sabine Bohnacker; Carsten Staedtler; Christoph Dieckmann; Volker Schoder; Gerhard Adam Journal: Radiology Date: 2004-02 Impact factor: 11.105
Authors: Donald A Podoloff; Ranjana H Advani; Craig Allred; Al B Benson; Elizabeth Brown; Harold J Burstein; Robert W Carlson; R Edward Coleman; Myron S Czuczman; Dominique Delbeke; Stephen B Edge; David S Ettinger; Frederic W Grannis; Bruce E Hillner; John M Hoffman; Krystyna Kiel; Ritsuko Komaki; Steven M Larson; David A Mankoff; Kenneth E Rosenzweig; John M Skibber; Joachim Yahalom; Jq Michael Yu; Andrew D Zelenetz Journal: J Natl Compr Canc Netw Date: 2007-05 Impact factor: 11.908