Browsing by Subject "Plastic surgery"

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    (IEEE, 2009-04) Torun, R. Baturalp; Yurdakul, Merve; Duygulu, Pınar
    In this paper, we propose a method to match similar faces despite photos, which are taken from different sources on Internet, could have different scenes, illumination and posing. Interest points are used to recognize faces, and some points are eliminated in order to find best matching points which pair the similar face. Difference between two matching points is used to define similarity of the faces. Inspite of physical changes due to old age, plastic surgery, make-up or clothing, experiments show that given face image can be successfully matched with a similar face within a database composed of celebrity photos. ©2009 IEEE.
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    ItemOpen Access
    The effect of epidural anesthesia on muscle flap tolerance to venous ischemia
    (Lippincott Williams & Wilkins, 2010) Cayci, C.; Cinar, C.; Yucel, O. A.; Tekinay, T.; Ascherman, J. A.
    Background: Venous ischemia is a major cause of failure after free tissue transfers and replantations. The combination of general and epidural anesthesia leads to vasodilatation and improves tissue perfusion. Postoperative pain relief and sympathetic blockage are additional benefits of epidural anesthesia. The purpose of this study was to determine whether epidural anesthesia has benefits on microcirculation and neutrophil functions in muscle flaps subjected to venous ischemia. Method: Thirty Sprague-Dawley rats were divided into three groups: group I, general anesthesia; group II, spinal anesthesia; and group III, epidural anesthesia. Cremaster flaps were prepared, postcapillary venules were selected under intravital videomicroscopy, and flaps were subjected to venous ischemia. Images were recorded from preselected postcapillary venules before venous ischemia (baseline) and following reperfusion. Neutrophil rolling and adhesion, functional capillary density, and diameters of postcapillary venules were evaluated. Results: The increase in rolling neutrophils in group III was significantly lower than in groups I and II at 60 and 120 minutes. Change of adherent neutrophils in group III was significantly lower than in groups I and II at 15, 60 and 120 minutes. There was significantly more reduction in inner diameter of postcapillary venules in groups I and II compared with group III. Functional capillary density in groups I and II was significantly lower than in group III. Conclusion: Epidural anesthesia regulated neutrophil functions, salvaged functional capillaries, and prevented vasoconstriction of postcapillary venules in cremaster muscle flaps subjected to venous ischemia. Spinal and general anesthesia, however, were found to be ineffective in improving microcirculation of muscle flaps subjected to venous ischemia.
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    Türkiye’de plastik rekonstrüktif ve estetik cerrahinin tarihsel gelişimi
    (Bilkent University, 2024) Yılmaztürk, Berk; Öz, Naim Sina; Şimşek, Ceren Ece; Demirkaya, Enes; Bayram, Elif Sude
    Rekonstrüktif cerrahi, Türkiye Cumhuriyeti’nin kurulduğu günden bu yana hızla gelişmektedir. Bu gelişimde farklı üniversitelerinin rekonstrüktif cerrahi bölümlerinin açılması ve Türk Plastik Rekonstrüktif ve Estetik Cerrahi Derneği’nin kurulmasının etkisi olduğu söylenebilir. Bu çalışmanın amacı, Türkiye’de Plastik Rekonstrüktif ve Estetik cerrahinin doğuşu, ilk örnekleri ve sonrasında Türk Plastik Rekonstrüktif ve Estetik Cerrahi Derneği’nin kurulmasıyla birlikte bu cerrahi dalın 1940-2000 yılları arasındaki gelişimini incelemektir. Prof. Dr. Cihat Borçbakan ve Prof. Dr. Halit Ziya Konuralp’in bu cerrahi dalın gelişimine olan katkıları, Gülhane Askeri Tıp Akademisinin bu cerrahi dalının gelişmesindeki rolü ve modern anlamda plastik cerrahinin gelişimi ele alınacaktır.