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Öğe Acute myeloid leukemia detected on fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography imaging in a patient with fever of unknown origin(ELSEVIER SCIENCE INC, 2011) Kara, P. Ozcan; Gedik, G. Kara; Sari, O.; Serdengecti, M.; Kaya, B.[Abstract not Available]Öğe Acute Phase Response after Radioiodine Treatment in Hyerthyroidism(SPRINGER, 2005) Sari, O.; Tunc, R.; Kisakol, G.; Serdengecti, M.; Ayan, H. A.; Dostbil, Z.[Abstract not Available]Öğe Bone and peritoneal metastasis of breast carcinoma: findings on fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography(ELSEVIER SCIENCE INC, 2011) Kara, P. Ozcan; Kara, T.; Gedik, G. Kara; Sari, O.[Abstract not Available]Öğe Chronic myeloid leukemia detected on FDG PET/CT imaging in a patient with renal cell carcinoma(ELSEVIER DOYMA SL, 2013) Varoglu, E.; Kaya, B.; Sari, O.It is well known that hematopoietic cytokine stimulation can cause increased fluorodeoxyglucose (FDG) accumulation in bone marrow on PET/CT imaging, which simulates that seen in patients with bone marrow metastases. However, increased bone marrow FOG uptake can be caused by other etiologies. We report a patient with operated renal cell carcinoma had no history of hematopoietic cytokine stimulation. The FDG PET/CT images showed increased bone marrow FDG uptake, and the patient was diagnosed as chronic myeloid leukemia. This case revealed that increased FDG uptake on bone marrow may be related to neoplastic disease of the hematopoietic tissues. (C) 2012 Elsevier Espana, S.L. and SEMNIM. All rights reserved.Öğe Comparison of bone scintigraphy and F-18-FDG PET-CT in a prostate cancer patient with osteolytic bone metastases(ELSEVIER SCIENCE INC, 2011) Kara, P. Ozcan; Kara, T.; Gedik, G. Kara; Sari, O.; Sahin, O.A 62 year-old male with prostate cancer, recently complaining lumbar pain with elevated PSA level (6.83 ng/ml) was referred for evaluating bone metastases. Bone scintigraphy with Tc-99m-MDP demonstrated intense uptake on third lumbar vertebra. Postoperative biopsy of the lesion on third lumbar vertebra revealed adenocarcinoma metastasis. For evaluating distant metastases and restaging, F-18-FDG PET-CT was performed postoperatively. On PET-CT imaging there were cervical and left parailiac lymph nodes with FDG uptake, destruction on third lumbar vertebra level and intense soft tissue mass FOG uptake on the same area. Additionally, FDG uptake was detected on right iliac crest. On the CT images obtained by integrated PET-CT scanner, this uptake was matching with lytic bone metastases. The superiority of F-18-FDG PET-CT for demonstrating osteolytic bone metastases compared to bone scintigraphy was presented in a case of prostate cancer in a patient with bone and lymph node metastases. (C) 2010 Elsevier Espana, S.L. and SEMNIM. All rights reserved.Öğe Comparison of Visual, Semi-Quantitative And Quantitative Analysis Of Tl-201 Spect in The Diagnosis Of Coronary Artery Disease(SPRINGER, 2005) Serdengecti, M.; Entok, E.; Sari, O.; Ayan, A.; Ilgan, S.; Bayhan, H.[Abstract not Available]Öğe Epitrochlear and axillary lymph node visualization on FDG-PET/CT imaging in a patient with rheumatoid arthritis(ELSEVIER SCIENCE INC, 2011) Kara, P. Ozcan; Kaya, B.; Gedik, G. Kara; Sari, O.An 38 year-old female with oral tongue cancer was referred for FDG-PET/CT scan for evaluating axillary lymph nodes and restaging malignancy. Bilateral uptake of axillary and epitrochlear lymph nodes were observed on PET/CT imaging. The uptake pattern was unexpected for the patient with this malignancy and she had a history of rheumatoid arthritis. Additionally, the wrists were included in the field of view and showed elevated FDG uptake. In this case report, we report benign axillary and epitrochlear tracer uptake on FDG-PET/CT scan in a patient with a history of rheumatoid arthritis. (C) 2010 Elsevier Espana, S.L. and SEMNIM. All rights reserved.Öğe Evaluation of fluorine-18 Fluorodeoxyglucose uptake in lung hilus with positron emission tomography/computed tomography(SPRINGER, 2010) Gedik, G. Kara; Kara, P. Ozcan; Kara, T.; Sari, O.[Abstract not Available]Öğe Evaluation of hepatic metabolic activity in non-alcoholic fatty livers on (18)FDG PET/CT(ELSEVIER DOYMA SL, 2013) Dostbil, Z.; Varoglu, E.; Serdengecti, M.; Kaya, B.; Onder, H.; Sari, O.Objective: The liver has been used as a reference organ for the assessment of abnormal F-18-fluoro-2-deoxy-D-glucose ((18)FDG) in the body. Some researchers found that hepatosteatosis significantly changed the hepatic (18)FDG uptake, while others did not. This study investigated whether the liver's (18)FDG uptake was affected by the diffuse fatty infiltration of the liver. Material and methods: A total of 156 cases were included in this study. Different patient groups were defined according to the liver Hounsfield unit (HU). The HU was calculated from an unenhanced CT, for all patients, and we calculated the mean standardized uptake value (STmean) and maximum standardized uptake value (SUNmax) on an (18)FDG PET scan. For this purpose, we placed regions of interest (ROIs) on the liver image. We statistically compared the SUVmean and SUVmax measured in the fatty liver patients and the control group. Results: The average SUVmean and SUVmax values were calculated as 2.58 +/- 0.66 and 3.94 +/- 1, respectively, in the patient group and 2.54 +/- 0.57 and 3.7 +/- 0.88, respectively, in the control group. We found the average SUVmean and SUVmax values in the fatty liver group and its subsets were not significantly different from the values in the control group (p > 0.05). We also did not find any statistically significant correlation between average liver density (HU) and the average SUV values (p > 0.05). Conclusion: Fatty infiltration may not have a significant effect on the liver's (18)FDG uptake. Thus, the liver may be used as a reference or comparator on (18)FDG PET scans in patients with fatty liver disease. (C) 2012 Elsevier Espana, S.L. and SEMNIM. All rights reserved.Öğe FDG PET/CT findings of thyrotoxicosis induced thymic hyperplasia associated to interferon(ELSEVIER DOYMA SL, 2013) Gedik, G. K.; Sari, O.; Kaya, B.; Varoglu, E.[Abstract not Available]Öğe Influence of SPECT reconstruction algorithm on diagnostic accuracy of parathyroid scintigraphy: comparison of iterative reconstruction with filtered backprojection(SPRINGER, 2015) Gedik, G. Kara; Sari, O.[Abstract not Available]Öğe An interesting contamination artifact appearing in I-(131) whole-body imaging after ablative therapy(ELSEVIER SCIENCE INC, 2011) Kara, P. Ozcan; Sari, O.; Gedik, G. Kara; Kocak, I.; Kaya, B.[Abstract not Available]Öğe Lung perfusion scintigraphy in patients with Behcet's disease(SPRINGER, 2005) Sari, O.; Balevi, S.; Serdengecti, M.[Abstract not Available]Öğe Lymphangitic Carcinomatosis in the Nonsmall Cell Lung Cancer Detected on FDG-PET/CT(SPRINGER, 2012) Serdengecti, M.; Varoglu, E.; Kaya, B.; Sari, O.; Guler, T.; Ozbek, O.; Keskin, S.[Abstract not Available]Öğe The Outcome of I-131 Therapy for Graves Disease and Toxic Nodular, Multinodular Qoiter in Endemic Region(SPRINGER, 2005) Serdengecti, M.; Sari, O.; Ayan, A.; Dostbil, Z.; Ozturk, I. S.[Abstract not Available]Öğe Relationship between primary tumour F-18-FDG uptake and immunohistochemical and clinical prognostic parameters in breast carcinoma(ELSEVIER DOYMA SL, 2017) Gedik, G. K.; Yilmaz, F.; Sari, O.Objective: The objective of this study was to investigate the relationship between level of F-18-fluorodeoxyglucose (F-18-FDG) accumulation in primary breast tumour assessed by positron emission tomography/computed tomography (PET/CT) and histopathological and clinical prognostic factors. Material and methods: A retrospective analysis was performed using the medical records of 58 female patients (age range: 31-86 years, mean age: 56) with biopsy of proven breast carcinoma, and who had undergone 18F-FDG PET/CT examination before chemotherapy/surgery. The 18F-FDG uptake of breast tumours was calculated as tumour to background ratio (TBR); which was compared with histopathological and clinical prognostic parameters. Results: The histology of the breast tumour in the 58 patients was ductal type in 52 (90%), lobular in 4 (7%), and mucinous in 2 (3%). Tumour size was <= 2 cm in 31 (53%) patients, and > 2 cm in 27 (47%). The levels of TBRs were not significantly different between the patients groups with tumours of 2 cm or less and greater than 2 cm (P= 0.131). No significant difference between levels of TBR was observed neither with regards to axillary lymph node involvement (P= 0.065) nor in terms of distant metastases (p = 0.123). No statistically significant difference was found in levels of TBRs between patients with c-erbB-2 receptor positive and negative ones (P= 0.107). Progesterone receptor (PR) expression was observed in 33 patients (57%), and 25 patients (43%) were PR negative. As regards progesterone receptor status, a statistically significant difference was observed in mean TBR levels between patients with and without progesterone receptor expression (P=0.020). Oestrogen receptor expression was positive in 41 (71%) patients, and negative in 17 (29%) patients. The difference in the levels of TBRs between patients with and without oestrogen receptor expression was at the level of significancy (P= 0.050). Conclusions: It is concluded that F-18-FDG uptake correlates with progesterone negativity of the tumour. However, a significant association with clinical prognostic parameters and level of 18F-FDG uptake levels could not be demonstrated. (C) 2016 Elsevier Espana, S.L.U. y SEMNIM. All rights reserved.Öğe The Value of 99m Tc Sulfur Colloid Liver-Spleen Scintigraphy For The Assesment Of Therapy in Liver Steatoses(SPRINGER, 2005) Serdengecti, M.; Sari, O.; Kayacetin, E.; Ayan, A.; Dostbil, Z.; Ozturk, I. S.[Abstract not Available]
