Yazar "Gonul, Yucel" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Age-related volumetric changes in pancreas: a stereological study on computed tomography
    (Springer France, 2012) Çağlar, Veli; Songur, Ahmet; Yağmurca, Murat; Acar, Murat; Toktas, Muhsin; Gonul, Yucel
    (1) To explore age-related changes in the volume of the pancreas on computed tomography (CT) images calculated by the method of Cavalieri. (2) To investigate the relationship between these changes and body mass index (BMI), gender, abdominal diameter, abdominal skinfold thickness. We retrospectively reviewed abdominal CT examinations of 272 adults between the ages of 20-88 years. There were seven groups of patients, with 40 patients (only ninth decade has 32 patients) for each decade. Pancreatic volume (PV) was found to be 63.68 +/- A 15.08 cm(3) in females, 71.75 +/- A 15.99 cm(3) in males (mean value of both groups, 67.71 +/- A 16.03 cm(3)). Maximum value of PV was found in the fourth decade in females, males and also for mean of both groups (73.50, 84.21 and 78.85 cm(3), respectively). PV remained constant until similar to 60 years of age. Thereafter, it gradually decreased in both genders. There was a negative correlation between PV and age (p < 0.001, r: -0.473). We found positive correlation between PV and BMI, sagittal abdominal diameter (SAD), transverse abdominal diameter (TAD), anterior subcutaneous adipose tissue thicknesses (ASAT), posterior subcutaneous adipose tissue thicknesses (PSAT), bilateral subcutaneous adipose tissue thicknesses (BSAT). Quantitative data may allow clinicians to better estimate age-related PV changes and help them in decision making.
  • Küçük Resim
    Öğe
    Morphometry, asymmetry and variations of cerebral sulci on superolateral surface of cerebrum in autopsy cases
    (Springer France, 2014) Gonul, Yucel; Songur, Ahmet; Uzun, İbrahim; Uygur, Ramazan; Alkoç, Ozan Alper; Çağlar, Veli; Küçüker, Hudaverdi
    The cerebral sulci are known as main microanatomical borders that serve as a gateway and surgical passage to reach the ventricles or to the deeper lesions. It is a matter of curiosity that whether there is a convergence between the morphological asymmetry and the functional asymmetry, and also its significance in surgery. The aim of this study is make morphometric measurements and evaluate asymmetry of several sulci on the lateral aspects of the cerebrum in regard to main sulci and related reference key points. A total of 100 cerebral hemispheres from 50 autopsy cadavers were examined. The lengths of several sulci on the superolateral aspect of the hemispheres and the distances between the sulci and nearby sulci and the reference key points were measured. Encountered variations were examined and photographed. Evaluation of the variations: superior frontal sulcus (SFS), inferior frontal sulcus, superior temporal sulcus (STS), precentral sulcus and postcentral sulcus were found to be discontinuous in 60, 46, 41, 84 and 70 % of the hemispheres, respectively. Evaluation of the asymmetry: the distances between SFS posterior end and longitudinal fissure, STS posterior end and lateral sulcus posterior end, as well as lengths of external occipital fissure (EOF), and discontinuous course of STS were significantly different between left and right hemispheres. There is usually a morphological partial asymmetry between the right and left hemispheres for any individual. Also, some of our measurements were found to be compatible with the ones in the literature, while others were incompatible.