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Öğe Endovascular stent-graft placement for the emergency treatment of ruptured descending aortic aneurysm(2014) Koç, Osman; Batur, Abdussamet; Vural, Alaattin; Günbey, Leman Karapekmez; Görmüş, Niyazi; Çil, BarbarosRuptured aortic aneurysm is a condition that requires emergency treatment because of its high mortality rate. In this case, we presented the emergency endo- vascular treatment of a ruptured descending thoracic aortic aneurysm. A female patient, admitted to the emergency with sudden onset back pain, was treated by emergency endovascular stent-graft after CT angiography examination. According to endovascular treatment, surgical treatment has a high mortality and morbidity rate in the treatment of the ruptured descending thoracic aortic aneurysms. The endovascular stent-graft treatment is applied safely and successfully to the intervention of this pathology. (JAEM 2014; 13: 97-8)Öğe Hounsfield unit density in the characterisation of bile duct lesions(INT SCIENTIFIC INFORMATION INC, 2019) Batur, Abdussamet; Kerimoglum, Ulku; Ataseven, HuseyinPurpose: To study the density of lesions in the lumens of extrahepatic bile ducts through computed tomography examinations, and to compare their characterisations with the results of pathology and/or endoscopic retrograde cholangiopancreatography (ERCP). Methods: The density of lesions along extrahepatic bile ducts were measured and compared with pathology and/or ERCP. The lesions were evaluated in two main groups: benign or malignant. The bile duct wall enhancement, intrahepatic bile ducts, and gallbladder were also evaluated. Results: The study was conducted with computed tomography scans of 197 cases (93 females, 104 males) who had optimal imaging. The results regarding density of extrahepatic intraductal lesions that were studied at BT were compared with pathology and magnetic resonance cholangiopancreatography results. Of 197 lesions, 125 (63.5%) were reported as benign and 72 (36.5%) were reported as malignant. The results for benign lesions showed an average density of 66.67 +/- 17.30 Hounsfield units (HU), and for malignant lesions the average density was 82.38 +/- 13. Conclusion: Lesion density level (HU) gives valuable information for the differentiation between benign and malign lesions in intraluminal extrahepatic bile ducts.Öğe Magnetic Resonance Imaging Texture Analysis in the Detection of Metastatic Lymph Nodes in Patients with Nasopharyngeal Carcinoma(Selçuk Üniversitesi, 2023 Ağustos) Özer, Halil; Batur, Abdussamet; Özdemir, Nurullah; Durmaz, Mehmet Sedat; Kılınçer, AbidinAims: To investigate the role of magnetic resonance imaging (MRI) texture analysis (TA) in the detection of metastatic lymph nodes in patients with nasopharyngeal carcinoma (NPC). Material and methods: Between January 2020 and October 2021, 15 NPC patients with 32 metastatic lymph nodes and 30 healthy subjects with benign lymph nodes were included in the study. The texture features compared between metastatic and benign lymph nodes. The independent predictor parameters of metastatic lymph nodes were determined using multivariate regression analysis. Receiver operator characteristics (ROC) analysis was used to evaluate the diagnostic performance of the regression models. Results: The first order texture features did not differ significantly between groups (p>0.05). Except for correlation in metastatic lymph nodes, all gray-level co-occurrence matrix (GLCM) and graylevel run length matrix (GLRLM) features were significantly different (p<0.05). The GLCM features of joint entropy, joint energy, and maximum probability; and the GLRLM features of gray level non uniformity and low gray level run emphasis were independent predictors of metastatic lymph nodes. The area under the curve (AUC) values for the GLCM regression model and GLRLM regression model were 0.975 and 0.928, respectively. Conclusion: MRI texture analysis may be useful to detect metastatic lymph nodes in patients with NPC by providing quantitative information on tissue heterogeneity and cellular composition.Öğe Measurement of spleen stiffness by shear-wave elastography for prediction of splenomegaly etiology(LIPPINCOTT WILLIAMS & WILKINS, 2019) Batur, Abdussamet; Alagöz, Sümeyra; Durmaz, Fatma; Baran, Ali İrfan; Ekinci, ÖmerObjective The aim of this study was to evaluate the reproducibility of measurement of spleen stiffness at the time of the initial detection of splenomegaly, whether it is found incidentally or not, in determining the etiology of splenomegaly. Methods The pathologies that brought about the diffuse splenomegaly were evaluated in 3 main groups as follows: hepatoportal, myeloproliferative, and infectious causes. In addition, 17 healthy control patients were recruited. All patients were examined with acoustic radiation force impulse imaging with VTQ. Results The difference between the splenic parenchymal elasticity values in the hepatoportal group (3.27 +/- 0.36 m/s), in the myeloproliferative disease group (2.98 +/- 0.33 m/s), in the infectious disease group (2.44 +/- 0.21 m/s), and in the control group (2.08 +/- 0.19 m/s) was found to be statistically significant (P = 0.001). The intraclass correlation coefficient for shear wave velocity measurement between hepatoportal causes and myeloproliferative causes was 71.2% (95% confidence interval [CI], 54.9%-87.4%), between hepatoportal causes and infective causes was 99.7% (95% CI, 98.6%-100.0%), and between myeloproliferative causes and infective causes was 83.3% (95% CI, 68.8%-97.9%). In the same patient groups, spleen volumes were measured as 64.08 +/- 9.66, 78.18 +/- 18.52, and 51.57 +/- 7.44 cm(2), respectively; in the control group, it was 26.75 +/- 6.57 cm(2). The difference between spleen volumes was found to be statistically significant (P = 0.001). Conclusions Distinguishing the causes of splenomegaly is important because the disorders require different management strategies. In diseases that cause splenomegaly, tissue content may change according to pathogenesis. Such changes in the spleen are mechanical properties that can be quantified by elastography.
