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Author: search.filters.author.Kahraman, GokhanHas files: No

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    Diagnostic Impact of Quantitative Dual-Energy Computed Tomography Perfusion Imaging for the Assessment of Subsegmental Pulmonary Embolism
    (2021) Celtikci, Pinar; Hekimoglu, Koray; Kahraman, Gokhan; Bozbas, Serife; Gultekin, Bahadir; Akay, Hakki Tankut; 0000-0002-1655-6957; 0000-0002-0805-0841; 33186173; AAD-9097-2021; ABA-7388-2021
    Objective The aim of this study was to investigate the quantitative differences of dual-energy computed tomography perfusion imaging measurements in subsegmental pulmonary embolism (SSPE), between normal lung parenchyma (NLP) and hypoperfused segments (HPS) with and without thrombus on computed tomography angiography (CTA). Methods Lung attenuation, iodine density, and normalized uptake values were measured from HPS and NLP on iodine maps of 43 patients with SSPE. Presence of pulmonary embolism (PE) on CTA was recorded. One-way repeated-measures analysis of variance and Kruskal-Wallis analyses with post hoc comparisons were conducted. Results The numbers of HPS with and without SSPE on CTA were 45 (55.6%) and 36 (44.4%), respectively. Lung attenuation of NLP was significantly different from HPS (P < 0.001). Iodine density and normalized uptake values of HPS with PE were significantly lower than those of HPS without PE, which is significantly lower than NLP (P < 0.001). Conclusions Subsegmental pulmonary embolism causes HPS on dual-energy computed tomography perfusion imaging, which demonstrates different iodine density and normalized uptake values depending on the presence of thrombus.
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    Oxalosis Crystals' Redeposition in Cardiac Tissue Leading to New-Onset Fatal Cardiac Complication After Liver Transplant in Primary Oxalosis Patient: Case Report
    (2020) AlShalabi, Omar; Soy, Ebru H. Ayvazoglu; Akdur, Aydincan; Karakaya, Emre; Kahraman, Gokhan; Moray, Gokhan; Haberal, Mehmet; 0000-0002-4879-7974; 0000-0002-3462-7632; 0000-0002-0993-9917; 0000-0002-8726-3369; 0000-0003-2498-7287; 33187466; AAD-5466-2021; AAJ-8097-2021; AAC-5566-2019; AAA-3068-2021; AAE-1041-2021
    Primary oxalosis is a rare hereditary disorder of metabolism resulting in accumulation of calcium oxalate in almost all tissues of the body. All published data point out the improvement of cardiac function after transplant. Here, we report the first case in the literature of an 8-year-old patient with primary oxalosis in which oxalosis implantations increased in cardiac tissue after liver transplant and manifested as new-onset ventricular tachycardia and cardiomyopathy, leading to death.