Person: BİLGİN, MEHMET
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Publication Open Access Diagnostic value of dynamic contrast-enhanced magnetic resonance imaging in the evaluation of the biliary obstruction(2012-01-01) BALCI, CEM NUMAN; Bilgin, MEHMET; Toprak, HÜSEYİN; BURGAZLI, MEHMET; BILGIN, SABRİYE ŞENNUR; CHASAN, RITVAN; ERDOĞAN, ALİ; BİLGİN, MEHMET; TOPRAK, HÜSEYİNPurpose: In this study, our purpose was to investigate the diagnostic efficacy of the dynamic contrast-enhanced magnetic resonance imaging (MRI) method in the patients with bile duct obstruction. Materials and methods: 108 consecutive patients (53 men, 55 women, mean age; 55.77 ± 14.62, range 18-86 years) were included in this study. All the patients underwent conventional upper abdomen MRI using intravenous contrast material (Gd-DTPA) and MRCP in 1.5 Tesla MRI scanner. MRCP images were evaluated together with the T1 and T2w images, and both biliary ducts and surrounding tissues were examined for possible pathologies that may cause obstruction. Results: MRI/MRCP findings compared with final diagnoses, MRI/MRCP in the demonstration of bile duct obstruction sensitivity 96%, the specificity 100%, and accuracy 96.3%, in the detection of presence and level of obstruction, the sensitivity 96.7%, specificity 100%, and accuracy 97.2%, in the diagnosis of choledocholithiasis, the sensitivity 82.3%, specificity 96%, and accuracy 91.7%, and in the determination of the character of the stenosis, sensitivity 95.6%, specificity 91.3%, and accuracy 94.5% were found. Conclusion: The combination of dynamic contrast-enhanced MRI and MRCP techniques in patients with suspected biliary obstruction gives the detailed information about the presence of obstruction, location, and causes and is a highly specific and sensitive method.Publication Metadata only MRI of Pancreas in Patients with Chronic Pancreatitis and Healthy Volunteers: Can Pancreatic Signal Intensity and Contrast Enhancement Patterns be Valuable Predictors of Early Chronic Pancreatitis?(2017-01-01) Bilgin, Sabriye Sennur; Bilgin, MEHMET; Toprak, HÜSEYİN; BURGAZLI, K. Mehmet; CHASAN, Ritvan; ERDOGAN, Ali; Balci, Numan Cem; BİLGİN, MEHMET; TOPRAK, HÜSEYİNBackground: Chronic pancreatitis is a progressive inflammatory disease of the pancreatic parenchyma and ductal structures. Typical MR imaging features of chronic pancreatitis include dilatation of the main pancreatic duct and irregularities of branch pancreatic ducts that can be evaluated with MRCP, loss of the normal high signal intensity of the pancreatic parenchyma on T1-weighted images, and decreased enhancement on dynamic contrast-enhanced sequences.Publication Open Access CT and MRI Findings of Hepatic Involvement in Rendu-Osler-Weber Disease.(2012-01-01) Bilgin, MEHMET; Yildiz, S; Toprak, HÜSEYİN; AHMAD, ISSAM CHEIKH; KOCAKOÇ, ERCAN; BİLGİN, MEHMET; YILDIZ, ŞEYMA; TOPRAK, HÜSEYİNRendu-Osler-Weber disease is a rare autosomal dominant disorder. Hepatic involvement manifests itself as vascular, parenchymal, and biliary lesions with characteristic telangiectasias and vascular shunts. In a 37-year-old female patient, dynamic contrastenhanced upper abdominal CT and MRI were performed. CT and MRI revealed dilated celiac trunk and hepatic artery. On early arterial phase, dilated hepatic veins showed significant enhancement. On arterial and portal venous phases, liver showed significantly heterogeneous contrast enhancement and showed homogenous enhancement in the hepatic parenchymal phase. On the magnetic resonance cholangiopancreatography, irregular biliary ducts with strictures and dilatation were seen.Publication Open Access Diagnosis of Appendicitis in Patients with Abnormal Position of the Appendix due to Mobile Caecum.(2012-01-01) Toprak, HÜSEYİN; Bilgin, MEHMET; ATAY, MUSA; KOCAKOÇ, ERCAN; TOPRAK, HÜSEYİN; BİLGİN, MEHMETAcute appendicitis is usually diagnosed on the basis of signs, symptoms, clinical history, physical examination, and results of laboratory tests.The position of the appendix can vary considerably, both in relation to the caecum and because of the inconsistent position of the caecum itself, and may cause variable clinical symptoms. We present the CT findings of surgically proven acute appendicitis associated with atypically located caecum in two patientsPublication Open Access CT and MRI findings of sarcomatoid cholangiocarcinoma.(2012-10-16) Bilgin, MEHMET; Toprak, HÜSEYİN; BILGIN, SABRİYE ŞENNUR; KONDAKÇI, MUSTAFA; BALCI, CEM NUMAN; BİLGİN, MEHMET; TOPRAK, HÜSEYİNComputed tomography (CT) and magnetic resonance imaging (MRI) findings for a case of intrahepatic sarcomatoid cholangiocarcinoma is presented. A 48-year-old man with upper abdominal pain underwent contrast-enhanced CT and MRI. A 13 10 7 cm mass was seen in the left liver lobe, which had hypodense internal architecture on CT and mixed signal intensities on both T1- and T2-weighted images with an overwhelmingly hypointense signal on T1-weighted images and a hyperintense signal on T2-weighted images. The lesion had heterogeneous enhancement on both CT and MRI. A satellite nodule with the same imaging features was distinctive for the lesion.Publication Open Access Ileocecal Intussusception due to a Lipoma in an Adult.(2012-01-01) Bilgin, MEHMET; Toprak, HÜSEYİN; AHMAD, ISSAM CHEIKH; YARDIMCI, ERKAN; KOCAKOÇ, ERCAN; BİLGİN, MEHMET; TOPRAK, HÜSEYİN; YARDIMCI, ERKANWhile intestinal tumors are rare, small intestinal lipomas are even more uncommon benign neoplasms. They are usually asymptomatic, but lipomas larger than 2 cm may become symptomatic due to obstruction, bleeding, or intussusception. In this paper, US and CT findings of a lipoma located in the terminal ileum and causing ileocecal intussusception were discussed. We report a case of small bowel lipoma that became symptomatic due to intermittent obstruction episodes and ileocecal intussuception. If the diagnosis of intestinal lipoma had been made absolutely as in our case, they should be removed surgically in elective conditions.Publication Open Access The association of breast arterial calcification and metabolic syndrome(2014-01-01) Yildiz, Seyma; Toprak, HÜSEYİN; Aydin, SİNEM; Bilgin, MEHMET; Oktay, Veysel; Abaci, Okay; Kocas, Cuneyt; YILDIZ, ŞEYMA; TOPRAK, HÜSEYİN; AYDIN, SİNEM; BİLGİN, MEHMETOBJECTIVES: We investigated the relationship between metabolic syndrome and breast arterial calcification detected via mammography in a cohort of postmenopausal subjects. METHODS: Among 837 patients referred to our radiology department for mammographic screening, 310 postmenopausal females (105 patients with and 205 patients without breast arterial calcification) aged 40 to 73 (mean 55.9¡8.4) years were included in this study. The groups were compared with respect to clinical characteristics and metabolic syndrome criteria. Univariate and multivariate analyses identified the factors related to breast arterial calcification. RESULTS: Age, postmenopausal duration and the frequencies of diabetes mellitus, hypertension and metabolic syndrome were significantly higher in the subjects with breast arterial calcification than in those without (p,0.05). Multivariate analysis indicated that age (OR = 1.3, 95% CI = 1.1–1.6, p = 0.001) and metabolic syndrome (OR = 4.0, 95% CI = 1.5210.4, p = 0.005) were independent predictors of breast arterial calcification detected via mammography. The independent predictors among the features of metabolic syndrome were low levels of high-density lipoproteins (OR = 8.1, 95% CI = 1.0264.0, p = 0.047) and high blood pressure (OR = 8.7, 95% CI = 1.5249.7, p = 0.014). CONCLUSIONS: The likelihood of mammographic detection of breast arterial calcification increases with age and in the presence of hypertension or metabolic syndrome. For patients undergoing screening mammography who present with breast arterial calcification, the possibility of metabolic syndrome should be considered. These patients should be informed of their cardiovascular risk factors and counseled on appropriate lifestyle changes.Publication Metadata only Ultrasonography and magnetic resonance imaging findings of abdominal complications of cystic fibrosis.(2012-10-01) Bilgin, MEHMET; BURGAZLI, MEHMET; Toprak, HÜSEYİN; ERDOGAN, ALİ; KOCAKOÇ, ERCAN; BİLGİN, MEHMET; TOPRAK, HÜSEYİN