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http://dx.doi.org/10.5762/KAIS.2013.14.6.2958

Evaluate Utility of Thyroid Cancer Discrimination by 18F-FDG PET/CT Delay Scan Images  

Lee, Hyeon-Guck (Department of Public Health, The Graduate School of Eulji University)
Han, Man-Seok (Department of Radiological Science, Kangwon National University)
Kim, Yong-Kyun (Department of Radiological Technology, Daewon University College)
Seo, Sun-Youl (Department of Public Health, The Graduate School of Eulji University)
Jeon, Min-Cheol (Department of Radiology Chungnam National University Hospital)
Kim, Tae-Hyung (Department of Radiological Science, Kangwon National University)
Hong, Seong-Jong (Eulji University department of radiiologic science)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.14, no.6, 2013 , pp. 2958-2965 More about this Journal
Abstract
Purpose : To evaluate the degree of malignancy of incident thyroid lesion found in 18F-FDG PET/CT findings and the usefulness of the method suggested in this study, we applicate the Delay Scan Method that differentiate a false positive benign tumor, inflammation and malignancy, as well as make the criteria of SUV. Materials and Methods : A retrograde study was conducted of 25 patients(1 exception) who were admitted in E hospital to receive 18F-FDG PET/CT examination until Janaary and April of 2008. 18F-FDG PET/CT image photographing was taken in Biograph-Duo made by SIEMENS, after taking normal 18F-FDG PET/CT image(1hr) and then 1hr later we took the thyroid 1 bed-delayed image for the patients who showed abnormal thyroid 18F-FDG uptake and above 2.0 SUV for 2 minutes every 1 bed. For the patients who showed abnormal thyroid uptake and above 2.0 SUV, 1hr later, we took a 1 bed-delayed image and then made a comparative study between measured maxSUV of 1hr-abnormal uptake image and that of 2hr-delayed image. Results : In this 18F-FDG PET/CT study among the patients who showed incidental 18F-FDG thyroidal uptake the number of thyroid cancer was 5(20.8%), all of then showed benign findings. a comparison of results for 18F-FDG PET/CT. the benign patient measured maxSUV in the PET/CT. image(1hr) mean value 5.06maxSUV and delay image(2hr) mean value 5.23maxSUV differences of two value is 0.19maxSUV and the malignantIt patient measured maxSUV in the PET/CT. image(1hr) mean value 9.63maxSUV and delay image(2hr) mean value 10.65maxSUV differences of two value is 10.65maxSUV in Thyroid abnormal uptake patients. Conclusion : in the case of incidental 18F-FDG uptake in thyroid, max SUV of focal thyroid lesion is above 5.0 if 18F-FDG PET/CT examine the delayed images to add, You could see that reasonable diagnostic method useful. to differentiate whether lesions of malignant.
Keywords
Delay Scan; 18F-FDG PET/CT; MaxSUV; Thyroid cancer;
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Times Cited By KSCI : 3  (Citation Analysis)
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