Browsing by Author "Demircioglu, I"

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Morphometric Analysis and Three-Dimensional Computed Tomography Reconstruction of the Long Bones of Femoral and Crural Regions in Van Cats
(Via Medica, 2021) Yilmaz, O.; Demircioglu, I
Background: This study was conducted to determine the morphometric features and to make the three-dimensional (3D) reconstruction of the images obtained by computed tomography (CT) of the main long bones (femur, tibia, fibula) in Van cats, and to reveal the biometric differences between these measurement values of both sexual dimorphism and homotypic variations. Materials and methods: A total of 16 adult Van cats, 8 male and 8 female, were used in the study. The pelvic limb long bones of the cats, which were anesthetized with the ketamine-xylazine combination, were scanned with a CT device and their images were obtained. These images were converted to a 3D structure by means of MIMICS 20.1 (The Materialise Group, Leuven, Belgium) software programme. Then, morphometric, volumetric, surface arae measurements of these bones were calculated and statistical analyses were performed. Results: In the analysis, it was observed that right greatest length (GL), left GL, right greatest length from caput ossis femoris (GLc), left greatest breadth of the distal end (Bd), right volume (V), and left V measurement values of the femur; left GL1, right greatest breadth of the proximal end (Bp), right Bd, left Bd, right smallest breadth of the diaphysis (SD), right V, left V, and right surface area (SA) measurement values of the tibia; right V, left V, right SA, and left SA measurement values of the fibula were statistically significantly higher in male cats than in female cats (p < 0.05). The volume and surface area measurement values of the femur, tibia and fibula of male and female cats were determined as 8.57 +/- 1.33 cm(3) and 7.00 +/- 0.49 cm(3), 64.28 +/- 6.72 cm(2) and 59.42 +/- 4.72 cm(2); 7.56 +/- 1.28 cm(3) and 6.15 +/- 0.52 cm(3), 56.89 +/- 6.47 cm(2) and 52.72 +/- 3.15 cm(2); 1.10 +/- 0.17 cm(3) and 0.83 +/- 0.05 cm(3), 14.18 +/- 1.61 cm(2) and 11.95 +/- 0.48 cm(2), respectively. Conclusions: The statistical differences between the sexes in terms of the measurement parameters of the femur, tibia and fibula in adult Van cats were determined. We believe that these differences can be used in determining morphological variations of Van cats. In addition, it is thought that the data obtained from the present study would be beneficial to veterinary physicians in the clinical application areas in order to evaluate the pathological conditions related to these bones and to the studies in the field of zooarchaeology.
Three-Dimensional Reconstruction and Morphometric Analysis of the Mandible in Van Cats: a Computed Tomography (Ct) Study
(Polska Akad Nauk, Polish Acad Sciences, Univ Warmia & Mazury Olsztyn, 2021) Yilmaz, O.; Demircioglu, I
This study was carried out to determine the morphometric and volumetric features of the mandible in Van cats by using computed tomography (CT) and a three-dimensional (3D) software program. The study also aimed at presenting the biometrical differences of these measurements between genders. A total of 16 adult Van cats (8 males, 8 females) were used in the study. The cats were anesthetized using a ketamine-xylazine combination. They were then scanned using CT under anesthesia and their images were obtained. The scanned images of the mandible in each cat were used for the reconstruction of a 3D model by using the MIMICS 20.1 (The Materialise Group, Leuven, Belgium) software program. Later, morphometric (17 parameters), volumetric, and surface area measurements were conducted and statistical analyses were carried out. In our morphometric measurements, it was found that TLM (total length of the mandible), PCD (pogonion to coronoid process distance), CAP (length from the indentation between the condyle process and angular process to pogonion), CAC (length from the indentation between the condyle process and the angular process to back of alveole C1), CML (length between C1 - M1), RAH (ramus height), MDM (mandible depth at M1), MHP (height of the mandible in front of P3), and ABC (angular process to back of alveole C1 distance) were greater in male cats: while MWM (mandible width at M1 level) was greater in female cats and was statistically significant (p<0.05). The length and height of the mandible were 6.36 +/- 2.42 cm and 3.01 +/- 1.81 cm in male cats, respectively. On the other hand, in female cats, the length and height of the mandible were 5.89 +/- 2.57 cm and 2.71 +/- 1.26 cm, respectively. The volume of the mandible was measured to be 7.39 +/- 0.93 cm(3) in male cats and 5.40 +/- 0.49 cm(3) in female cats. The surface areas were 63.50 +/- 5.27 cm(2) in male cats and 52.73 +/- 3.89 cm(2) in female cats. In conclusion, in this study, basic morphometric parameters of the mandible in adult Van cats were found by using CT and a 3D modeling program. The differences between male and female cats were also determined in the study.