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Öğe Age and gender related changes in bronchial tree: a morphometric study with multidedector CT(VERDUCI PUBLISHER, 2016) Ulusoy, M.; Uysal, I. I.; Kivrak, A. S.; Ozbek, S.; Karabulut, A. K.; Paksoy, Y.; Unver Dogan, N.OBJECTIVE: The aims of this study are the identification of differences in the diameter, length, area and branching angles of the trachea and bronchi with gender and age, and the identification of trachea types by using MDCT images. PATIENTS AND METHODS: The thoracic MDCT images of 253 patients (0-74 years old, 142 male and 111 female) were evaluated. Tracheal diameter, tracheal cross-sectional area, diameter and length of bronchi, and several angles of the bronchial tree [e.g. subcarinal angles (SCA), interbronchial angles (IBA)] were measured. RESULTS: Average anteroposterior and transverse diameter of the trachea in adult patients were measured as 15.8 +/- 2.9 mm and 17.5 +/- 3.7 mm respectively. Average tracheal cross-sectional areas in adult patients were calculated as 160.7 +/- 41.3 mm(2) in females and as 275.7 +/- 57.3 mm(2) in males. Four types of trachea were identified as circular (68% in adults, 73% in children), oval (13%, 15%), rectangular (11%, 5%) and horseshoe shaped (8%, 7%). The average right and left SCA were calculated as 34.5 degrees +/- 8.1 degrees and 38.1 degrees +/- 8.9 degrees respectively. The average right and left IBA were calculated as 32.4 degrees +/- 7.7 degrees and 35.2 degrees +/- 8.1 degrees respectively. CONCLUSIONS: The findings of this study may be helpful during bronchoscopy and tube and stent application procedures. MDCT seems to be a convenient technique for the evaluation of the bronchial tree.Öğe Central Vein Catheterization-r Elated Thrombosis and Superior Vena Cava Syndrome: Case Report(2009) Yosunkaya, A.; Çelik, J. B.; Dayıoğlu, M.; Erkoçak, R.; Paksoy, Y.Catheter-related central vein thrombosis is a frequent complication of central venous catheterization in criti cal care patients and is rarely associated with superior vena cava syndrome. In this report, thrombosis and superior vena cavil syndrome due to central venous catheterization were discussed in critical care patient with previous multiple catheter placement on same region. The l)atieflt was 35 years old; women and she had cardiac arrest after sectin operation. She had multiple unsuccessful atteml)ts for central venous catheterization into the left and right internal jugular vein and had a history of several central catheter placements into the right internal jugular vein for four nionths. In last catheterization, edema, erythe- ma was observed on her right face, chest wall and neck. In the magnetic resonance imaging, thrombosis in tight internal jugular vein, right subclavian vein and right external jugular veils were demonstrated. In conclusion, central venous catheterization plays an important role in the delivery of modern medical care but is not without its drawbacks. The healthcare professionals need to lie aware of complications iluring the central venous catheterization.Öğe Comment on Percutaneous Treatment of Liver Hydatid Cysts - Reply(Amer Roentgen Ray Soc, 2006) Arslan, A.; Arıkoğlu, Hilal; Paksoy, Y.; Ödev, Kemal; Koç, O.[Abstract not Available]Öğe Intravertebral benign notochordal cell tumour: A case report and differential diagnosis(SPRINGER, 2016) Karabagli, P.; Koktekir, E.; Karabagli, H.; Paksoy, Y.[Abstract not Available]Öğe Magnetic resonance enterography with oral mannitol solution: Diagnostic efficacy and image quality in Crohn disease(ELSEVIER MASSON, 2017) Koplay, M.; Guneyli, S.; Cebeci, H.; Korkmaz, H.; Emiroglu, H. H.; Sekmenli, T.; Paksoy, Y.Purpose: The aim of this study was to investigate the diagnostic efficacy and image quality of magnetic resonance enterography (MRE) using oral mannitol solution for the evaluation Crohn disease (CD). Materials and methods: We retrospectively evaluated MRE examinations of 153 patients with an assumed or definitive diagnosis of CD. There were 65 men and 88 women, with a mean age of 35.7 years (range: 6-73 years). MRE findings of the patients were compared to histopathologic results obtained by surgery-fiberoptic endoscopy. The sensitivity, specificity and diagnostic efficacy rate were calculated. Additionally, image quality of MRE was evaluated using a four-point scale (1 = excellent, 4 = poor/non-diagnostic). Results: Sensitivity, specificity and diagnostic efficacy were 92.5%, 93% and 92.8%, respectively. Six patients had false-positive and five patients had false-negative findings. Three falsely positive patients had ulcerative colitis and three had non-specific terminal ileitis. A total of 765 small bowel segments were analyzed; 475 (62%) had an image quality score of 1 and 15 (2%), an image quality score of 4. Conclusion: MRE using oral mannitol solution provides excellent image quality for MRE and has high degrees of diagnostic efficacy in CD patients. (C) 2017 Editions francaises de radiologie. Published by Elsevier Masson SAS. All rights reserved.Öğe Obstrüktif Uterovajinal Anomaliler: Us ve Bt Bulguları (Olgu Sunumu)(1997) Paksoy, Y.; Açıkgözoğlu, Saim; Yeşeri, M.; Dağdöndüren, L.; Emlik, D.; Ödev, K.Amaç: Uterovajinal anomalilerle ilgili çok çalışma olmasına rağmen bilgisayarlı tomografi (BT)ve/veya ultrasonografi (US) görüntülerini gösteren yayın azdır. Biz burada BT ve/veya US ile görüntülenen obstrüktif uterovajinal anomalili üç olguyu sunuyoruz. Olgu Sunumu: Obstrüktif uterovajinal anomalili üç olgunun BT ve/veya US bulguları özetlendi. İki olguda lezyon imperfore himen, bir olguda ise ostium vajinada kısmi obstrüksyon saptandı. BT ve/veya US, üç olguda vajinada, iki olguda uterusta, bir olguda salpinkslerde sıvı birikimini gösterdi. Sonuç: US ve BT obstrüktif uterovajinal anomalililerde değerli diagnostik ve anatomik bilgiler verir.Öğe Omental Fibroma: CT and US Findings(SPRINGER VERLAG, 1998) Paksoy, Y.; Şahin, M.; Açıkgözoğlu, Saim; Ödev, K.; Ömeroğlu, E.The US, CT, and X-ray findings in a patient with omental fibroma of the lesser omentum are described. Ultrasound showed a solid mass with cystic areas in the central region. At CT the lesion showed peripheral enhancement and central hypodensity. On X-ray studies with barium, there was border distortion in the lesser curvature of the stomach. The mass was resected surgically. A pathologic diagnosis of fibroma was confirmed.Öğe Role of Diffusion-weighted Mr in Differential Diagnosis of Intracranial Cystic Lesions(2005) Bükte, Y.; Paksoy, Y.; Genç, E.; Uca, A.U.Aim: The purpose of this study was to evaluate the role of diffusion-weighted imaging (DWI) in characterizing cerebral cystic lesions. The usefulness of the apparent diffusion coefficient (ADC) map in lesion characterization was also evaluated. Methods: We compared the findings of conventional MR images with those of DWI: 63 cystic masses in 48 patients were examined with routine MR imaging and echo-planar DWI. The routine MR imaging included at least the axial T2- and T1-weighted sequences, and post-contrast T1 axial sequences. The DWI included an echo-planar spin-echo sequence with three values (0, 500 and 1000 s/mm2) sensitizing gradient in the x, y, z direction, and it obtained an ADC map. Results: The sensitivity of DWI for differentiating abscesses from primary brain tumours was 100%; for differentiating abscesses from metastatic tumours was 73%; for differentiating benign from malignant lesions was 90%. Conclusion: Although some metastatic lesions may appear hyperintense on DWI thus imitating an abscess, evaluation of the lesions with both DWI and conventional MRI may have an important contribution to the differentiation of tumours from abscesses.Öğe Subungual glomus tumour: magnetic resonance imaging findings(BLACKWELL PUBLISHING, 2007) Koc, O.; Kivrak, A. S.; Paksoy, Y.The present study aims to present a case of a subungual glomus tumour with literature to the findings on magnetic resonance (MR) imaging. A 51-year-old man consulted his physician because of a pain in the nail bed of his thumb, which he had had for 2 years. A plain radiography and MR examination was performed. Physical examination showed a blue-brown focus beneath the nail and there was deformation. A plain radiography demonstrated no abnormality. T1-weighted spin-echo images showed a well-marginated, oval, slightly hyperintense lesion (4 mm diameter) located in the subungual region. On turbo spin-echo T2-weighted images the lesion was hyperintense with a hypointense rim. T1-weighted spin-echo images after intravenous administration of contrast medium showed strong enhancement. The lesion was completely excised at surgery and the diagnosis of a glomus tumour was established histologically. In conclusion, MR imaging offers excellent diagnostic information about a clinically suspected glomus tumour.
