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Öğe Diagnosis of pulmonary embolism by 64-detector MDCT combined with doppler ultrasonography and indirect CTV of the leg: A different protocol [64-Detektör MDBT ile Birlikte Dopler Ultrasonografi ve İndirekt BTV'nin Pulmoner Emboli Tanısı](TIP ARASTIRMALARI DERNEGI, 2013) Nayman A.; Odev K.The aim of our study was to investigate the contribution of CT angiography in cases with a presumptive PTE diagnosis, evaluating lower extremity veins with CT venography and color Doppler ultrasonography (CDU) and the role of these methods at diagnosis of DVT. 46 patients with presumptive diagnosis of PTE which was confirmed with a positive CT angiography (CTA) were included in the study. Lower extremities between the iliac crest and head of femur and the popliteal region were scanned having 17-18 slices from each area, without administring extra contrast medium with a 0.8 mm slice gap. The patients underwent lower extremity CDU on the same day. Four out of 46 patients were shown to have thrombus by CDU while their CTV were normal. Two of them had an appearance of thrombus on CTV while their CDU were normal. When we consider CDU as the gold standard method, the sensitivity of CTV is calculated as 81.8% and the specificity as 91.6%. Kappa value between two modalities was calculated as 0.738 and a consistency of 87% is found. Mean radiation dose was calculated as 2.43 mSv for CTA and 0.457 mSv for CTV. With the imaging technique so-called combined CTA-indirect CTV method, DVT can be determined with moderate sensitivity and high specificity with application of low dose extra radiation.Öğe Intrahepatic portal vein aneurysm: An unusual entity(Universa Press, 2016) Nayman A.; Guler I.; Koplay M.; Erdogan H.; Cebeci H.[Abstract not Available]Öğe Radiofrequency ablation of phalangeal osteoid osteoma: Technical challenges encountered in small bones [Falangeal osteoid osteomada radyofrekans ablasyon: Küçük kemiklerde karsilasilan teknik zorluklar](2011) Özbek O.; Nayman A.; Koç O.; Küçükapan A.; Özbek S.; Kerimo?lu Ü.Osteoid osteoma, a benign bone tumor, is characterized by a generally less than 1 cm nidus surrounded by a zone of reactive sclerosis. It is frequently located in the femur and tibia; on the other hand in up to 5% of cases it may be presented in upper extremities. In previous years, its treatment was usually open surgery with en-bloc resection or curettage of the tumor. Various minimal invasive percutaneous treatments including radiofrequency ablation became popular in last years. In this report, the difficulties encountered during radiofrequency ablation treatment in small bones is described in a 19-year-old female case of osteoid osteoma.Öğe Swyer-James syndrome: Demonstration by 64-slice 3D MDCT angiography and coronal MPR CT imaging(TIP ARASTIRMALARI DERNEGI, 2008) Sakarya M.E.; Koç O.; Aribaş O.; Özbek O.; Paksoy Y.; Nayman A.; Ödev K.The 64-slice three dimensional (3D) multidetector computed tomography (MDCT) angiography and high resolution coronal multiplanar reformation (MPR) computed tomography (CT) images in inspiration and expiration were performed in a patient suspected of having Swyer - James syndrome. The right pulmonary system was normal. The left lung was small and hyperlucent. The left pulmonary arterial system was small but patent. Both lung contained bronchiectasis. High resolution coronal MPR CT images confirmed air trapping in the left lung and the right upper lobe. A diagnosis of Swyer-James syndrome was made.Öğe Type A interrupted aortic arch in a pediatric case: Cardiac MR imaging and MR angiograph findings [Pediatrik bir olguda tip A interrupted aortic arch: Kardiyak MR görüntüleme ve MR anjiografi bulgulari](2010) Paksoy Y.; Özbek O.; Koç O.; Nayman A.Congenital heart disease constitutes the most common form of pediatric heart diseases. Interrupted aortic arch is a relatively rare entity. This condition which can be defined as absence of luminal continuity of aortic arch has been reported to be associated with a number of congenital heart diseases in the literature. The two most important diagnostic tools are echocardiography and conventional angiography. In recent years, magnetic resonance imaging has become the most important since magnetic resonance angiography (MRA) is noninvasive and has a superior diagnostic capability. We assessed a relatively rare interrupted aortic arch and accompanied aortic arch and cardiac abnormalities in a 14-day-old infant with cardiac MRI and MRA which are noninvasive and don't expose the patient to radiation and discussed their contribution to the diagnosis. Copyright © 2010 by Türkiye Klinikleri.
