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Öğe The anatomic analysis of the vidian canal and the surrounding structures concerning vidian neurectomy using computed tomography scans(Assoc Brasileira Otorrinolaringologia & Cirurgia Cervicofacial, 2019) Acar, Gulay; Cicekcibasi, Aynur Emine; Cukurova, Ibrahim; Ozen, Kemal Emre; Seker, Muzaffer; Guler, IbrahimIntroduction: The type of endoscopic approach chosen for vidian neurectomy can be specified by evaluating the vidian canal and the surrounding sphenoid sinus structures. Objective: The variations and morphometry of the vidian canal were investigated, focusing on the functional correlations between them which are crucial anatomical landmarks for preoperative planning. Methods: This study was performed using paranasal multidetector computed tomography images that were obtained with a section thickening of 0.625 mm of 250 adults. Results: The distributions of 500 vidian canal variants were categorized as follows; Type 1, within the sphenoid corpus (55.6%); Type 2, partially protruding into the sphenoid sinus (34.8%); Type 3, within the sphenoid sinus (9.6%). The pneumatization of the pterygoid process is mostly seen in vidian canal Type 2 (72.4%) and Type 3 (95.8%) (p < 0.001). The mean distances from the vidian canal to the foramen rotundum and the palatovaginal canal were greater in the vidian canal Type 2 and 3 with the pterygoid process pneumatization (p < 0.001). The prevalence of the intrasphenoid septum between the vidian canal and the vomerine crest and lateral attachment which ending on carotid prominence were much higher in vidian canal Type 3 than other types (p < 0.001). The mean angle between the posterior end of the middle turbinate and the lateral margin of the anterior opening of the vidian canal was measured as 33.05 +/- 7.71 degrees. Conclusions: Preoperative radiologic analysis of the vidian canal and the surrounding structures will allow surgeons to choose an appropriate endoscopic approach to ensure predictable postoperative outcomes. (c) 2017 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Published by Elsevier Editora Ltda.Öğe A Different Approach to Anatomy Education: Sami ZAN, Professor of Anatomy, MD(Galenos Publ House, 2016) Seker, Muzaffer; Yuzbasioglu, Neslihan[Abstract Not Availabe]Öğe The Effects of COVID-19 Pandemic on Academic Researches and Publications(Tuba-Turkish Acad Sciences, 2020) Yalcin, Haydar; Seker, MuzafferThis study focused on data-based literature evaluation. For this purpose, various scientometrics and bibliometric analyzes were carried out on scientific documents about coronavirus. Within the scope of the research, social network analysis method was used in order to find answers to the questions sought. The research has made inferences about collaboration models. The dynamics for R&D studies carried out in the pandemic process, which concerns the entire world, are described through productivity, collaboration and funding dynamics. Attention was drawn to the points of use for policy development based on data. If we summarize the prominent results in the study; Although collaborative practices were observed in research and development activities, it was observed that collaborations remained mostly on a national or regional scale. High aggregate constraints (HAC) and low aggregate constraints (LAC) tables allow us to evaluate the positions of actors in coronavirus research in terms of social network analysis values. Coronavirus research has been shown to be a priority research topic on the agenda of the whole world (annual growth rate19.43%.). In coronavirus researches, teams formed in various geographies of the world and their leaders have been identified. Lau SKP, Du LY, Al-Tawfiq JA, Memish ZA are both in the publication performance list and in the network values list. Institutions addressed in China, where the first cases of the pandemic process were observed, undertook a significant share in terms of the number of publications. When we examine the inter-institutional collaboration models, we can say that the institutions do not have a structure prone to collaboration. EU, Wellcome Trust and European Community (EC) have also undertaken a considerable burden, while the University of Hong Kong has also undertaken a significant burden in terms of funding.Öğe Evaluation of cerebrum volume of children 1-5 years old(Scientific Publishers India, 2014) Cuce, Gokhan; Seker, Muzaffer; Kalkan, Serpil; Canbilen, Aydan; Sakarya, Mehmet Emin; Cuce, Hasan; Yilmaz, Mehmet TugrulTotal brain volume and regional brain size can vary in men and women. Sexual dimorphism between the male and female brain starts in the fetal period under the influence of genetic and hormonal factors. In addition, the newborn brain begins to change in terms of both brain volume and morphology. In the present study, we evaluated gender-related changes in brain volume in children 1-5 years old. Magnetic resonance images of 30 healthy children aged 1-5 years old (15 male, 15 female) were obtained from the Department of Radiology, Meram School of Medicine, University of Necmettin Erbakan. The Cavalieri method and point-counting were used to determine the brain hemisphere volumes from these images. The mean volumes of the right cerebrum in female and male children were 423.26 +/- 110.62 cm(3) and 456.43 +/- 161.39 cm(3), respectively, and those of the left cerebrum were 416.41 +/- 103.51 cm(3) and 460.42 +/- 154.99 cm(3), respectively. There were no significant differences in cerebrum hemisphere volumes between male and female children 1-5 years old (P > 0.05).Öğe The Evaluation of Morphometry of Nasal Bone and Pyriform Aperture Using Multidetector Computed Tomography(Lippincott Williams & Wilkins, 2014) Yuzbasioglu, Neslihan; Yilmaz, Mehmet Tugrul; Cicekcibasi, Aynur Emine; Seker, Muzaffer; Sakarya, Mehmet EminIntroduction: The aim of this study was to measure nasal bone (NB) and pyriform aperture (PA), morphometrically. Besides, the different types of NB and PA were classified and determined the sexual differences. Materials and Methods: Our study was performed on 120 (60 women, 60 men) multidetector computed tomography images obtained from patients who underwent radiologic examination in the Department of Radiology of Meram Faculty of Medicine, Necmettin Erbakan University. The right, left, and median heights of NB; the superior and inferior widths of NB; the width of PA; and the distance between rhinion and anterior nasal spine (as the height of PA) were measured. Frontonasal and internasal angles were also determined. All data were analyzed statistically using Student's t-test. Results: The other data of men were higher than of women except for the superior and inferior widths of NB and the frontonasal angle. We also determined the ratio of the height of PA to the height of NB on median plane and the ratio of the height of PA to the width of PA. They were found less than 2.0 in 64.2% and 100% of the cases, respectively. The NB and PA were classified into 8 and 7 different types, respectively. Conclusions: The knowledge of the morphometric data and different types of the NB and PA is essential for sex determination, all surgical procedures related to this area, and nasal reconstructions.Öğe The Evaluation of Morphometry of the Mastoid Process Using Multidetector Computed Tomography in a Living Population(Lippincott Williams & Wilkins, 2015) Yilmaz, Mehmet Tugrul; Yuzbasioglu, Neslihan; Cicekcibasi, Aynur Emine; Seker, Muzaffer; Sakarya, Mehmet EminThe aim of this study was to examine the relationships of the bony landmarks on the lateral surface of the mastoid process (MP). It was also the target of this study to reveal the importance of sexual dimorphism in terms of the mastoid triangle. Our study was performed on 140 (70 women, 70 men) multidetector computed tomography images obtained from patients who underwent radiologic examination at the Department of Radiology of Meram Medical Faculty, Necmettin Erbakan University. The height of the MP was measured using 2 different ways. The distance between the mastoid apex and the midpoint of the distance of the porion and the mastoid notch was measured (mastoid height 1). Then, the distance between the Frankfurt horizontal plane and the mastoid apex was measured (mastoid height 2). The distances between porion-mastoid notch, porion-mastoid apex, porion-asterion, asterion-mastoid apex, articular tubercle-asterion, articular tubercle-mastoid apex, as well as the right and the left MP were also measured. Finally, the angles between porion-mastoid apex-asterion, mastoid apex-asterion-porion, and asterion-porion-mastoid apex were measured. All data were analyzed statistically using the Student's t-test. According to the results of the measurements, all right and left parameters of the men were higher than the women's right and left sides except for the angle between asterion-porion-mastoid apex. In addition, all right and left parameters were almost the same in both sexes. Having the knowledge of measurements of the distances between the major landmarks of the temporal bone is essential to avoid possible complications during facial, mastoid, and especially sigmoid sinus surgeries.Öğe The Mandibular Landmarks about the Facial Artery and Vein with Multidetector Computed Tomography Angiography (MDCTA): an Anatomical and Radiological Morphometric Study(Soc Chilena Anatomia, 2012) Cicekcibasi, Aynur Emine; Yilmaz, Mehmet Tugrul; Kiresi, Demet; Seker, MuzafferThe aim of this study was to investigate the course of the facial vessels according to several mandibular landmarks in living individuals using multidetector computed tomography angiography (MDCTA) to determine these related to sex and side. This study was conducted in the Radiology Department, Meram Faculty of Medicine, Necmettin Erbakan University (Konya, Turkey). In total, sixty faces from 30 specimens (15 males and 15 females) with symptoms and signs of vascular disease were evaluated for the facial vessels by MDCTA scan. The facial vessel parameters were measured according to the reference points (mandibular angle, mental protuberance, mental foramen and facial midline). The distance from the point at which the facial artery first appears in the lower margin of the mandible to the mandibular angle for right and left facial artery were observed as 3.53 +/- 0.66 cm and 3.31 +/- 0.73 cm in males, respectively. These distances were determined as 2.91 +/- 0.52 cm and 3.35 +/- 0.48 cm in females. MDCTA is a new, powerful, safe and noninvasive test to demonstrate the vasculature of the head. Bony structures and neighboring vessel morphology can be evaluated by this technique in cases of trauma with suspected vessel injuries and when considering patient selection for flap surgery.Öğe Morphometric analysis of cavitas glenoidalis with multidedector CT(Soc Anatomica Espanola, 2023) Keles, Ali; Yilmaz, Mehmet T.; Ozbek, Orhan; Saygin, Duygu A.; Seker, MuzafferThe glenoid cavity is a sliced egg-shaped joint surface located on the lateral margin of the scapula to form the shoulder joint. Recognition of variations in shape and dimensions of the glenoid cavity is important for a better comprehension of joint-associated diseases, especially in total shoulder arthroplasty procedures. The aim of this study was to perform morphometric measurements on the glenoid cavity. Glenoid cavities of 391 individuals (197 males [50.4%], 194 females [49.6%]) were reviewed by using Multi-detector Computed Tomography. The maximum length and maximum width of glenoid cavities, as well as the width, depth and circumference at the notch level were measured, and the index value was calculated. The glenoid cavity shapes were typed as pear, inverted comma and oval type. Furthermore, the metric values that provide the best differentiation between genders were identified through ROC analysis.The pear glenoid cavity type was detected in 53.2%, inverted comma type was detected in 28.4%, and oval type was detected in 18.4% of cases. In all of our morphometric measurements, male values were higher than female values, and there was significant difference between them. Results of ROC analysis revealed significant mea- surements for the maximum length and maximum width measurements of the glenoid for gender determination. Morphometric information of the glenoid cavity can be useful in order to increase clinical success in case of Bankart lesion, rotator cuff disease, and osteochondral defect. Recognition of different shapes and dimensions of the glenoid cavity is essential for the design of the glenoid component, especially for total shoulder arthroplasty procedure. We believe that the data obtained in our study would be useful for prosthesis designers and orthopaedic surgeons.Öğe Morphometric analysis of hippocampus and intracranial formations based on their stages in patients diagnosed with major cognitive disorder(Tubitak Scientific & Technological Research Council Turkey, 2022) Yucel, Nurullah; Seker, Muzaffer; Yilmaz, Mehmet Tugrul; Sakci, Zakir; Bukte, YasarBackground: Alzheimer???s disease (AD) is a major cognitive disorder classified as a common type of dementia. Magnetic resonance imaging (MRI) is the most practical method for diagnostic purposes in AD. The aim of the study was to determine the volume of the hippocampus and intracranial structures in AD using MRI. Methods: A total of 102 patients with AD were classified based on the mini mental test scores as early, moderate, and advanced stage. The control group included 35 healthy subjects. MRI were compared between the patients and control groups based on the calculations made utilizing volBrain software. Intracranial volumetric parameters were also compared between the three stages of AD. Results: The white matter volumes, total hippocampus, total cerebrum, right cerebrum, left cerebrum, truncus encephalic, total nucleus caudatus and total corpus amygdaloideum were significantly increased in the AD. The white matter volumes, right hippocampus, left hippocampus, total cerebrum, left cerebrum, and right cerebellum were significantly increased in the patients in the early stage compared to the patients in the advanced stage AD. Conclusion: The most efficient volumetric study in AD could be performed by obtaining long-term periodic morphometric data of an early diagnosed and regularly followed-up patient population.Öğe Morphometric Analysis of Styloid Process Using Multidetector Computed Tomography(Lippincott Williams & Wilkins, 2015) Yilmaz, Mehmet T.; Akin, Duygu; Cicekcibasi, Aynur E.; Kabakci, Anil D. A.; Seker, Muzaffer; Sakarya, Mehmet E.Styloid process (SP) is a cylindrical anatomical structure located at the anterior side of stylomastoid foramen. Normally, it is 20 to 25 mm in length and can vary with age and sex. An elongated SP is an unusual source of craniofacial and cervical pain. In this study, the clinical role of morphometric data of SP was discussed. In this study, 64-slice multidetector computed tomography images (Somatom Sensation 64, Siemens, Germany) from Radiology Department's archive of Necmettin Erbakan University were used. The examined images were collected from 100 patients (31 female and 69 male). Length of SP (SPL), SP width (SPW), distance between SP rooths (DBR), SP's angulation, and the distance between SP and internal carotid artery (SP-ICA) were measured. Statistical differences were found regarding to the data of SPL, SPW, DBR, and SP-ICA left between sexes. No statistical significance was detected between right and left side SPL (paired t test; P = 0.989, P > 0.05). SP was observed as mostly type A1 (right %55, left %52). These parameters were also compared with those of previous studies. The present study showed side and sex differences and types of SP. We believe that it was necessary to determine the normal range of values for different populations, and this knowledge will provide guidance to surgeons in the examination of this area.Öğe Sural nerve harvest for infants: integrated with information based on anatomical dissections(Tubitak Scientific & Technological Research Council Turkey, 2021) BUYUKMUMCU, Mustafa; Kabakci, Anil Didem Aydin; SAYGIN, Duygu A. K. I. N.; YILMAZ, Mehmet Tugrul; Seker, MuzafferBackground/aim: The aim of the present study was to determine the course and possible variations of the sural nerve with all anatomical details in human fetal cadavers. Materials and methods: This study was performed on 60 fetal cadavers. Formation type and level of the sural nerve was detected. Results: According to trimesters, it was determined that the mean transverse and vertical distance between the lowest point of the LM and the SN varied between 1.1 and 2.9 mm and 1.54 and 3.58 mm, respectively. Type 2 was the most common seen type of sural nerve (35.83%). It was determined that the sural nerve was mostly formed at the middle third of the leg (42.5%). Conclusion: Sural nerve graft with the knowledge of the anatomical details may be used for peripheral nerve reconstruction is required in congenital lesions, such as facial paralysis, obstetric brachial paralysis, and posttraumatic lesions in infants and children.
