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Öğe 68Ga-PSMA PET/CT Interobserver Agreement: Preliminary Results of a Lesion Based and Subregional Comparison Study(Springer, 2018) Soyluoglu, S.; Aktas, G.; Ustun, F.; Durmus-Altun, G.[Abstract Not Available]Öğe The accuracy of OSEM and FBP reconstruction algorithm for the determination of the thyroid volume: A fantom study(Springer, 2007) Ergulen, A.; Durmus-Altun, G.; Ustun, F.; Erol, S.; Cildavil, S.; Berkarda, S.[Abstract Not Available]Öğe Assesment of Adrenal Metastasis in Patients with Lung Cancer using F-18 FDG PET/CT(Springer, 2012) Aksoy, S.; Serim, B. Dirlik; Ustun, F.; Altun, G. Durmus[Abstract Not Available]Öğe Assessment of 99mTc-MIBI and 99mTc-tetrofosmin tumor tissue kinetics under the influence of increased blood glucose concantration in EATC-bearing mice(Springer, 2005) Durmus-Altun, G.; Ustun, F.; Cermik, T.; Cukur, Z.; Berkarda, S.[Abstract Not Available]Öğe CLINICALLY UNDETECTABLE OCCULT THYROID PAPILLARY CARCINOMA PRESENTING WITH CERVICAL LYMPH NODE METASTASIS(Editura Acad Romane, 2016) Tastekin, E.; Can, N.; Ayturk, S.; Celik, M.; Ustun, F.; Guldiken, S.; Sezer, A.Background. Occult papillary thyroid carcinoma presented as isolated cervical lymphadenopathy without clinical and radiologic findings has been rarely reported. Case report. A 47 years old female patient admitted to otorhinolaryngology clinic with 4X3 cm sized cervical mass. Physical examination of the patient was noted as a nontender, firm, mobile lymph node at right lateral cervical region. There was no inflammatory or infection disease in the history of patients anamnesis and no abnormal value on laboratory tests. Ultrasound screening of the neck detected a lymph node with suspicious features for malignancy. Head and neck examination was normal and there is no evidence of a tumoral mass or nodule in the thyroid gland. Whole body scan of MRI showed no pathologic sign both in the neck and body. Excisional biopsy was performed and revealed a carcinoma with papillary morphology. Immunohistochemical staining features of the tumor confirmed a papillary carcinoma derived from the thyroid gland. Second look USG of the neck and thyroid was performed but it revealed no tumoral mass. The patient underwent total thyroidectomy with right functional and central lymph node dissection. Histological examination of the thyroid gland showed multicentric 2 mm sized, three foci of papillary carcinoma located in bilateral thyroid lobes and metastatic lymph nodes in the right side of the neck. Conclusion. A metastatic cervical lymph node can be evidence of a clinically undetected occult papillary thyroid carcinoma. Specific immunohistochemistry staining of specimen may lead to appropriate surgery and progression of carcinoma may be hindered by application of additional RAI therapy.Öğe Comparison of Tc99m Tetrofosmin scintigraphy, Doppler sonography and Microvessel Density As Assessment of tumor angiogenesis after morphine administration(Springer, 2008) Ustun, F.; Durmus-Altun, G.; Tuncbilek, N.; Altaner, S.; Uzal, C.; Berkarda, S.[Abstract Not Available]Öğe Contribution of OSEM Algorithm and Couinaud Segment Analys to Diagnostic Accuracy on Liver Hemangioma Imaging By Using Tc 99m Labeled Red Blood Cells (RBC)(Springer, 2008) Korkmaz, U.; Durmus-Altun, G.; Ustun, F.; Torun, N.; Can, U.[Abstract Not Available]Öğe Evaluation of the clinical significance of parametric data of PSMA uptake in the prostate bed and its contribution to prognosis.(Springer, 2023) Mammadkhanli, Z.; Gunay, B. Ozdemir; Gokdemir, E.; Ustun, F.[Abstract Not Available]Öğe The histopathologic comparison of the protective effects of L-Carnitine and amifostine against high-dose radioiodine therapy -induced lacrimal gland damage in the guinea pig(Springer, 2009) Durmus-Altun, G.; Ozdil-Muratli, A.; Torun, N.; Ergulen, A.; Ustun, F.; Altaner, S.[Abstract Not Available]Öğe Improving the quality of Technetium-99m-labelled red blood cell SPECT imaging by OSEM reconstruction(Springer, 2005) Durmus-Altun, G.; Bedel, D.; Ustun, F.; Ergulen, A.; Berkarda, S.[Abstract Not Available]Öğe Postoperative Radioiodine Ablation in Low-Risk Differentiated Thyroid Cancer: Outcomes of Patients Treated with Different Doses in a Single Center(Springer, 2022) Orun, S.; Soyluoglu, S.; Korkmaz, U.; Ustun, F.[Abstract Not Available]Öğe Pre-therapy I-131 uptake value as a prediction method for metastatic lymph node status in patients with differentiated thyroid carcinoma(Springer, 2015) Aktas, G. Ege; Demir, S. Soyluoglu; Ustun, F.; Sarikaya, A.; Altun, G. Durmus[Abstract Not Available]Öğe Predictive value of dual time point imaging differentiation between malign and benign pancreatic lesions, Preliminary results(Springer, 2014) Ustun, F.; Ergulen, A.; Altun, G. Durmus[Abstract Not Available]Öğe The relationship between Ga-68 PSMA accumulation intensity and Gleason score, PSA levels in primary staging and evaluation of biochemical recurrence of prostate cancer: The preliminary results(Springer, 2017) Aktas, G. Ege; Caloglu, V.; Can, N.; Akdere, H.; Ustun, F.; Altun, G. Durmus[Abstract Not Available]Öğe The Role of Indices Obtained from Positron Emission Tomography for Predicting Prognosis in Patients with NonHodgkin's Lymphomas(Springer, 2013) Serim, B. Dirlik; Umit, E.; Ustun, F.; Aksoy, S.; Demir, M.; Altun, G. Durmus[Abstract Not Available]Öğe Staging and Indices measured with 18F-FDG PET/CT as a predictor of survival in Non-hodgkin's lymphoma(Springer, 2015) Serim, B. Dirlik; Umit, E.; Ustun, F.; Tokuc, B.; Demir, M.; Altun, G. Durmus[Abstract Not Available]Öğe Technologist Radiation Exposure in Routine Clinical Practice with I-131 Administration for Ablation of Thyroid Cancer(Springer, 2015) Ergulen, A.; Ustun, F.; Yigitbasi, O. N.; Durmus-Altun, G.[Abstract Not Available]Öğe Tumor characteristics of lung cancer in predicting axillary lymph node metastases(Elsevier Espana Slu, 2019) Ustun, F.; Tokuc, B.; Tastekin, E.; Altun, G. DurmusObjective: In lung cancer, axillary lymph node metastases (ALM) are rare, and according to the 8th grading system, it is classified as M1b disease. The aim of this study is to evaluate 1 ) the presence of ALM and2) the effect of the primary tumors characteristics on the development of ALM. Methods: We performed a descriptive cross-sectional study, with retrospective revision, to identify ALM. Results: There were 157 patients included in this analysis: ALM (63 patients) and control group (94 patients). The presence of extrathoracic lymph node, contralateral pulmonary parenchymal and distant metastasis and all SUVmax values were significantly higher in the study group versus the control group (P< 0.05). The SUVmax value of the primary tumor was not a predictor of ALM. According to the primary histopathologic diagnosis, small cell lung cancer was found to cause ALM development 3.4 times as much as squamous cancer (SQC) (OR: 3.40 [95% CI 1.3-10.20], P= 0.029) and adenocarcinoma group was found to cause ALM development 4 times as much as SQC (OR: 4.02 [95% CI 1.73-9.34], P= 0.001). The likelihood of developing ALM was significantly higher in tumors located in the central and upper lobe versus the lower lobe. Conclusion: The finding of ALM on PET/CT images, the necessity of histopathologic confirmation is determined according to the results of primary tumor localization, primary tumor histopathology, M stage on PET/CT imaging, localization of ALM according to primary tumor, and N stage on PET/CT imaging. (C) 2018 Sociedad Espanola de Medicina Nuclear e Imagen Molecular. Published by Elsevier Espana, S.L.U. All rights reserved.Öğe Which factors are affecting development of the axillary metastasis in lung cancer?(Springer, 2015) Ustun, F.; Altun, G. Durmus[Abstract Not Available]