TR Dizin İndeksli Yayınlar Koleksiyonu / TR Dizin Indexed Publications Collection

Permanent URI for this collectionhttps://hdl.handle.net/20.500.14365/4

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Scopus Q: search.filters.scopusQuartile.Q3Subject: search.filters.subject.Tıbbi İnformatik

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  • Article
    Citation - WoS: 19
    Citation - Scopus: 21
    Segmentation of Abdominal Organs From Mr Images Using Multi-Level Hierarchical Classification
    (Gazi Univ, Fac Engineering Architecture, 2015) Selvi, Esref; Selver, M. Alper; Kavur, Ali Emre; Guzelis, Cuneyt; Dicle, Oguz; Selver, Alper
    Medical imaging modalities can provide very detailed and informative mappings of the anatomy of a subject. These detailed and informative mappings can be processed to extract the information of interest instead of dealing with whole data (segmentation). Since manual segmentation on each slice is time consuming, tedious and operator dependent, automatic tools and techniques are needed. Segmentation of abdominal organs is a very challenging field of application due to overlapping intensity ranges of the organs, variations in human anatomy and pathology and the number of studies is very limited for Magnetic Resonance (MR), which is a relatively newer and rapidly developing imaging modality. Since it is obligatory to analyze and visualize MR images of abdominal organs (i.e. liver, right/left kidneys, spleen, pancreas, gall bladder) for several medical procedures, the main goal of this paper is to design and develop a segmentation system (method+software), which is robust to the challenges mentioned above, adaptive to the properties of the abdominal organs as well as to the interrelationships of these organs.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Healthcare-Related Hcv Genotype 4d Infections in Kayseri, Turkey
    (Aves, 2022-11-15) Gokahmetoglu, Selma; Polat, Ceylan; Atalay, Mustafa Altay; Sezgin, Gulten Can; Ergor, Gul; Aygen, Bilgehan; Gursoy, Sebnem; Abacıoğlu, Yusuf Hakan; Gökahmetolu, Selma; Abacolu, Yusuf Hakan; Abacioglu, Hakan
    Background: The frequency of genotype 4 hepatitis C virus infection is significantly higher in a city compared to other provinces in Turkey. In this study, we aimed to investigate the epidemiology and risk factors of hepatitis C virus genotype 4 infection in Kayseri province of Turkey. Methods: A case-control study was conducted with 61 hepatitis C virus genotype 4-infected patients and 71 controls. A questionnaire was administered to the patients and controls, asking for information about the risk factors of hepatitis C virus transmission. Core/E1 and NS5B regions of hepatitis C virus genome were amplified and sequenced by Sanger method. Phylogenetic analysis and molecular clock analysis were performed. The risk was determined by calculating the odds ratio and 95% CI. Logistic regression analysis was performed to determine the effect of risk factors by controlling for confounding variables. Results: Kayseri isolates were closely related to type 4d sequences but formed a separate cluster. According to the molecular clock analysis, hepatitis C virus genotype 4d entered Kayseri province probably between 1941 and 1988. Blood transfusion and surgical intervention were found to be significant risk factors for the infection. Conclusion: Epidemiological data showed that hepatitis C virus genotype 4d infections are significantly associated with unsafe medical procedures.