Ragiba Zagyapan

Baskent University, Engüri, Ankara, Turkey

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Publications (9)6.2 Total impact

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    ABSTRACT: Knowledge of variation in facial soft tissue thickness is important for forensic anthropologists, dentists, and plastic surgeons. Forensic anthropologists use such information as a guide in facial reconstruction and superimposition methods. The purpose of this study was to measure facial tissue thicknesses of adult males and females of Turkish origin across different types of occlusion, and to compare the results with each other and with values obtained for other populations. The study was conducted on 200 healthy individuals. The analysis of facial tissue thickness included 20 landmarks (10 dentoskeletal and 10 soft tissue) and 10 linear variables. Sex-based variation in facial tissue thickness was noted. The highest soft tissue thickness values were observed in the group with Class III occlusion type at Sn-A point for both the females (16.9, SD=2.4) and the males (17.8, SD=3.3). In the Class I group, the highest tissue depth was observed at Sn-A point (15.3, SD=2.1) in females, and at Li-Id point (17.1, SD=1.9) in males. In the Class II group, contrary to the findings for Class I, the highest soft tissue depth was at Li-Id point (16.0, SD=1.4) in females, and at Sn-A point (18.1, SD=2.6) in males. In conclusion, facial tissue thickness varied in adults depending on the sex and on the type of occlusion.
    Homo: internationale Zeitschrift fur die vergleichende Forschung am Menschen 08/2011; 62(4):288-97. · 0.96 Impact Factor
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    ABSTRACT: As there are cases brought for forensic examination where only the craniofacial region is available, estimation of stature from craniofacial dimensions is without doubt important in forensic cases. The study presented here attempts to estimate stature from craniofacial dimensions in the Turkish population. In the second phase of the study, the correlations between craniofacial dimensions and stature were also evaluated according to different head and face types. All measurements were taken from 286 healthy males with a mean age of 22.71 ± 4.86 years. The sample was then reclassified according to different head and face indexes. For the whole sample, correlation coefficients were low, changing only between 0.012 and 0.229. Thus, no significant increase in correlation coefficients was observed after the samples had been reevaluated according to different head and face types. As a conclusion, craniofacial dimensions are not good predictors for body height for the Turkish population.
    Journal of Forensic Sciences 09/2010; 55(5):1326-30. · 1.24 Impact Factor
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    ABSTRACT: The aim of this study is to measure the tympanic cavity (TC) volumes with Cavalieri principle using computed tomography (CT) scanning of temporal bones, to investigate the difference between the right and the left ears with respect to sexes and to exemplify the TC volume measurements. Clinical records of 91 patients (46 females 45 males; mean age 48.1 years; range 15 to 60 years) whose TCs were measured at ear nose throat clinic of Ankara Oncology Education and Research Hospital between January 2007 and March 2008, were retrospectively investigated. The CT scans which were obtained from two sides with a slice thickness of 1 mm were evaluated. Measurements of TC volumes were made with using the Cavalieri method. The mean TC volume in male subjects was 0.4721+/-0.0406 cm(3) on the left ears and 0.4883+/-0.0352 cm(3) on the right ears. In females the mean cavity volume was 0.4943+/-0.0501 cm(3) on the left ears and 0.4881+/-0.0485 cm(3) on the right ears. There was no statistically difference in between of the both sexes for the TC volume measurements and between both sites of the same individuals.
    Kulak burun bogaz ihtisas dergisi: KBB = Journal of ear, nose, and throat 01/2010; 20(3):137-41.
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    ABSTRACT: Age-related volumetric differences in brain anatomy or volumetric brain analyses in many disorders are of interest. Delineating the normal anatomical cerebellar volume is of importance for both the anatomists and clinicians. In the present study, we aimed to evaluate the cerebellar volume using a stereological technique and to determine the possible volumetric asymmetry depending on age and gender. Volumetric asymmetry of cerebellar hemispheres was evaluated using stereological method on the magnetic resonance images (MRI) of healthy male and female subjects. Randomly selected individuals (27 males, 27 females) aged between 10-86 years who have normal brain MRI were enclosed in the study. All the subjects were right handed. The individuals were divided into three groups according to age as 18-34 (young), 35-60 (middle aged) and 60-84 (elder) and their MRI images were analyzed. The data set were analyzed by two factor repeated measure analysis. Although the cerebellum was smaller between young and middle aged groups and also middle aged and elder groups, there were no any statistically significant differences between compared groups' mean (P > 0.05). There were not statistically differences according to sex and age groups (P > 0.05). There was no cerebellar asymmetry between compared groups. The stereological evaluation of cerebellar asymmetry in humans correlate with both gender and age groups is of importance for both clinicians and anatomists. The technique is simple, reliable, unbiased and inexpensive.
    Surgical and Radiologic Anatomy 10/2008; 31(3):177-81. · 1.13 Impact Factor
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    C Pelin, R Zagyapan, N Mas, G Karabay
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    ABSTRACT: Radial artery variations are of importance for clinicians, whether in angiographic examinations or surgical approaches. The high origin radial artery is the most frequent arterial variation observed in the upper limb, showing an incidence of 14.27% in dissection material and 9.75% in angiographic examination. In the present study an unusual course of the radial artery and its relation with the median nerve has been evaluated. During embryological development the radial artery sprouts from two arterial buds arising from the lateral side of the brachial artery and coalescing with each other. The artery lies in the forearm and is overlapped by the brachioradial muscle. In this particular case the radial artery originated from the medial side of the brachial artery and crossed the median nerve twice in an unusual manner 8 cm below the point at which the deep brachial artery arose and 12 cm above the intercondylar line. These results will enhance anatomical knowledge of the region and reduce complication in surgical approaches.
    Folia morphologica 12/2006; 65(4):410-3. · 0.47 Impact Factor
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    ABSTRACT: The introduction of cyclosporine (CsA) has improved the clinical results of renal transplantation significantly; however, these improvements were closely associated with an increased incidence of renal dysfunction. The present study sought to examine the ultrastructural changes in renal allografts with CsA nephrotoxicity. Nine patients who underwent renal transplantation at the Baskent University Faculty of Medicine between 2001 and 2002 were examined; 26 biopsies of these nine patients who had received their first renal allograft were included in this study. All patients with CsA toxicity showed some form of glomerular endothelial cell injury. The swelling of mitochondria was present in three of nine renal allografts with CsA toxicity, and podocyte changes were found significantly more frequently among patients with CsA toxicity. In addition, focal segmental thickening and the duplication of glomerular basement membrane were observed statistically more frequently. In conclusion, these findings could help differentiate CsA toxicity from other conditions and develop better treatment strategies.
    Renal Failure 02/2006; 28(7):543-7. · 0.94 Impact Factor
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    IZZET DUYAR, CAN PELIN, RAGIBA ZAGYAPAN
    Anthropological Science - ANTHROPOL SCI. 01/2006; 114(1):23-27.
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    Nuket Mas, Can Pelin, Ragiba Zagyapan, Hakan Bahar
    International Journal of Morphology 12/2005; 24(4):561-564. · 0.21 Impact Factor
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    ABSTRACT: This study is to evaluate whether it is possible to predict living stature from sacral and coccygeal vertebral dimensions. Individual vertebral body heights, sacral height (SH), and sacrococcygeal height (SCH) were recorded from the magnetic resonance images of 42 adult males. Sum of the heights of five sacral vertebrae (sigmaS), the first four coccygeal vertebrae (sigmaC), and the total height of the sacral and the first four coccygeal vertebrae together (sigmaSC) were also recorded. Linear regression equations for stature estimation were produced using the above mentioned variables. The regression equations were constructed and tested by using jack-knife procedure. Statistical analyses indicated that the combined variables (SH, SCH, sigmaS, sigmaC, sigmaSC) were more accurate predictors of stature than the heights of individual vertebrae. The results of the study pointed out that the equations derived from sacrococcygeal dimensions perform somewhat better than ones based on foot and head variables, but worse than those based on long-bone length. As a conclusion, the dimensions of sacral and coccygeal vertebrae could be used for stature estimation when long bones are not available.
    Journal of Forensic Sciences 04/2005; 50(2):294-7. · 1.24 Impact Factor

Publication Stats

68 Citations
6.20 Total Impact Points

Institutions

  • 2008–2010
    • Baskent University
      • Department of Anatomy
      Engüri, Ankara, Turkey