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Öğe The analysis of sacrum and coccyx length measured with computerized tomography images depending on sex(Int Assoc Law & Forensic Sciences, 2021) Bakici, Rukiye Sumeyye; Oner, Zulal; Oner, SerkanBackground: Sex estimation is vital in establishing an accurate biological profile from the human skeleton, as sex influences the analysis of other elements in both Physical and Forensic Anthropology and Legal Medicine. The present study was conducted to analyze the sex differences between the sacrum and coccyx length based on the measurements calculated with computed tomography (CT) images. One hundred case images (50 females, 50 males) who were between the ages of 25 and 50 and admitted by the emergency department between September 2018 and June 2019 and underwent CT were included in the study. Eighteen lengths, 4 curvature lengths, and 2 regions were measured in sagittal, coronal and transverse planes with orthogonal adjustment for three times. Results: It was stated that the mean anterior and posterior sacral length, anterior and posterior sacrococcygeal length, anterior and posterior sacral curvature length, anterior coccygeal curvature length, sacral area, lengths of transverse lines 1, 2, 3 and 4, sacral first vertebra transverse and sagittal length measurements were longer in males when compared to females (p < 0.05). It was noted that the parameter with the highest discrimination value in the receiver operating characteristic (ROC) analysis was the sacral area (AUC = 0.88/Acc = 0.82). Based on Fisher's linear discriminant analysis findings, the discrimination rate was 96% for males, 92% for females and the overall discrimination rate was 94%. Conclusions: It was concluded that the fourteen parameters that were indicated as significant in the present study could be used in anthropology, Forensic Medicine and Anatomy to predict sex.Öğe Analysis of the effects of total pneumatized turbinate volume on septum deviation, maxillary sinus volume, and maxillopalatal parameters: A multidetector computerized tomography study(Wolters Kluwer Medknow Publications, 2023) Senol, Deniz; Oner, Serkan; Secgin, Yusuf; Oner, Zulal; Toy, SeymaIntroduction: The aim of this study was to examine the effects of pneumatized turbinate volume (PTV) on nasal septum deviation (NSD), maxillary sinus volume (MSV), and maxillopalatal parameters with multidetector computed tomography (MDCT). Material and Methods: MDCT images of a total of 73 patients (35 females and 38 males) between the ages of 25 and 58 years were used in the study. PTV, MSV, and NSD angle and direction and interalveolar distance (IAD), maxillary spin distance (MSD), and maxillopalatal angle (MPA) measurements were made on images brought to the orthogonal plane in 3 plans. Results: Turbinate pneumatization (superior, middle, or inferior) was found in a total of 55 (75.3%) patients (28 females and 27 males). The number of patients with turbinate pneumatization on the right side was 14 (19.2%), while the number of patients with turbinate pneumatization on the left side was 15 (20.5%) and the number of bilateral pneumatization was 26 (35.6%). While no significant association was found between the presence of turbinate pneumatization and septal deviation angle, MSV, MPA, IAD, and MSD measurements, a significant difference was found between the groups in terms of PTV (P < 0.05). No significant association was found between NSD direction and all parameters. Discussion and Conclusion: In this study, we conducted with MDCT images, in addition to the highest incidence in turbinate pneumatization with 75.3%; it was found that PTV did not have an effect on NSD amount, MSV, and maxillopalatal parameters. Men were found to have higher NSD angle, higher maxillary sinus aeration, and larger IAD when compared with women.Öğe Can Typical Cervical Vertebrae Be Distinguished from One Another by Using Machine Learning Algorithms? Radioanatomic New Markers(Duzce Univ, Fac Medicine, 2023) Senol, Deniz; Secgin, Yusuf; Toy, Seyma; Oner, Serkan; Oner, ZulalObjective: The aim of this study is to distinguish the typical cervical vertebrae that cannot be separated from one another with the naked eye by using machine algorithms (ML) with measurements made on computerized tomography (CT) images and to show the differences of these vertebrae.Methods: This study was conducted by examining the 536 typical cervical vertebrae CT images of 134 (between the ages of 20 and 55) individuals. Measurements of cervical vertebrae were made on coronal, axial and sagittal section. 6 different combinations (Group 1: C3 - C4, Group 2: C3 - C5, Group 3: C3 - C6, Group 4: C4 - C5, Group 5: C4 - C6, Group 6: C5 - C6) were formed with parameters of each vertebrae and they were analyzed in ML algorithms. Accuracy (Acc), Matthews correlation coefficient (Mcc), Specificity (Spe), Sensitivity (Sen) values were obtained as a result of the analysis.Results: As a result of this study, the highest success was obtained with Linear Discriminant Analysis (LDA) and Logistic Regression (LR) algorithms. The highest Acc rate was found as 0.94 with LDA and LR algorithm in Groups 3 and Group 4, the highest Spe value was found as 0.95 with LDA and LR algorithm in Group 5, the highest Mcc value was found as 0.90 with LDA and LR algorithm in Group 5 and the highest Sen value was found as 0.94 with LDA and LR algorithm in Groups 3 and 5. Conclusions: As a conclusion, it was found that typical cervical vertebrae can be distinguished from each other with high accuracy by using ML algorithms.Öğe Cerebrospinal Fluid Dynamics in Patients with Multiple Sclerosis: The Role of Phase-Contrast MRI in the Differential Diagnosis of Active and Chronic Disease(Korean Radiological Soc, 2018) Oner, Serkan; Kahraman, Aysegul Sagir; Ozcan, Cemal; Ozdemir, Zeynep Maras; Unlu, Serkan; Kamisli, Ozden; Oner, ZulalObjective: Multiple sclerosis (MS) is an inflammatory disease characterized by demyelinating plaques in the white matter. Chronic cerebrospinal venous insufficiency (CCSVI) has been proposed as a new hypothesis for the etiopathogenesis of MS disease. MS-CCSVI includes a significant decrease of cerebrospinal fluid (CSF) flow through the cerebral aqueduct secondary to an impaired venous outflow from the central nervous system. This study aimed to determine whether CSF flow dynamics are affected in MS patients and the contributions to differential diagnosis in active and chronic disease using phase-contrast magnetic resonance imaging (PC-MRI). Materials and Methods: We studied 16 MS patients with chronic plaques (group 1), 16 MS patients with active plaques-enhanced on MRI (group 2), and 16 healthy controls (group 3). Quantitatively evaluation of the CSF flow was performed from the level of the cerebral aqueduct by PC-MRI. According to heart rates, 14-30 images were obtained in a cardiac cycle. Cardiac triggering was performed prospectively using finger plethysmography. Results: No statistically significant difference was found between the groups regarding average velocity, net forward volume and the average flow (p > 0.05). Compared with the controls, group 1 and group 2, showed a higher peak velocity (5.5 +/- 1.4, 4.9 +/- 1.0, and 4.3 +/- 1.3 cm/sec, respectively; p = 0.040), aqueductal area (5.0 +/- 1.3, 4.1 +/- 1.5, and 3.1 +/- 1.2 mm(2), respectively; p = 0.002), forward volume (0.039 +/- 0.016, 0.031 +/- 0.013, and 0.021 +/- 0.010 mL, respectively; p = 0.002) and reverse volume (0.027 +/- 0.016, 0.018 +/- 0.009, and 0.012 +/- 0.006 mL, respectively; p = 0.000). There were no statistical significance between the MS patients with chronic plaques and active plaques except for reverse volume. The MS patients with chronic plaques showed a significantly higher reverse volume (p = 0.000). Conclusion: This study indicated that CSF flow is affected in MS patients, contrary to the hypothesis that CCSVI-induced CSF flow decreases in MS patients. These findings may be explained by atrophy-dependent ventricular dilatation, which may occur at every stage of MS.Öğe COMPARISON OF CONVENTIONAL PHYSICAL THERAPY AND MULLIGAN MOBILIZATION TECHNIQUE IN THE TREATMENT OF CERVICOGENIC HEADACHE(Turkey Assoc Physiotherapists, 2022) Argali Deniz, Mine; Kose, Evren; Ercan, Meryem; Yagar, Derya; Oner, Serkan; Ozbag, DavutPurpose: The aim of this investigate the effectiveness of the conventional physical therapy and Mulligan mobilization technique in the treatment of Cervicogenic Headache (CH) and to compare the effectiveness of these two methods. Methods: A total of 40 patients with CH were randomized into conventional physical therapy group (Group 1, n=20) and Mulligan mobilization group (Group 2, n=20). Neck lordosis, range of motion (ROM), Cervical Performance Tests, Visual Analogue Scale (VAS), Neck Disability Index, Beck Depression Scale measurements were recorded at baseline and at two weeks after the treatment. Results: VAS, Neck Disability Index and Beck Depression Scale decreased and ROM, cervical performance and lordosis angle increased significantly in both groups (p=0.010). Conclusions: Both treatments were found to have positive effects on radiological and clinical findings of CH, but Mulligan mobilization technique was found to be more effective in all evaluations except neck extension and right lateral flexion ROM measurements.Öğe Comparison of pirfenidone and corticosteroid treatments at the COVID-19 pneumonia with the guide of artificial intelligence supported thoracic computed tomography(Wiley, 2021) Acat, Murat; Gulhan, Pinar Yildiz; Oner, Serkan; Turan, Muhammed KamilAim We aimed to investigate the effect of short-term pirfenidone treatment on prolonged COVID-19 pneumonia. Method Hospital files of patients hospitalised with a diagnosis of critical COVID-19 pneumonia from November 2020 to March 2021 were retrospectively reviewed. Chest computed tomography images taken both before treatment and 2 months after treatment, demographic characteristics and laboratory parameters of patients receiving pirfenidone + methylprednisolone (n = 13) and only methylprednisolones (n = 9) were recorded. Pulmonary function tests were performed after the second month of the treatment. CT involvement rates were determined by machine learning. Results A total of 22 patients, 13 of whom (59.1%) were using methylprednisolone + pirfenidone and 9 of whom (40.9%) were using only methylprednisolone were included. When the blood gas parameters and pulmonary function tests of the patients were compared at the end of the second month, it was found that the FEV1, FEV1%, FVC and FVC% values were statistically significantly higher in the methylprednisolone + pirfenidone group compared with the methylprednisolone group (P = .025, P = .012, P = .026 and P = .017, respectively). When the rates of change in CT scans at diagnosis and second month of treatment were examined, it was found that the involvement rates in the methylprednisolone + pirfenidone group were statistically significantly decreased (P < .001). Conclusion Antifibrotic agents can reduce fibrosis that may develop in the future. These can also help dose reduction and/or non-use strategy for methylprednisolone therapy, which has many side effects. Further large series and randomised controlled studies are needed on this subject.Öğe Effectiveness of Percutaneous Drainage on the Treatment of Mesh-Induced Seroma(Aves, 2019) Oner, Serkan; Altay, Cetin MuratObjective: To investigate the effectiveness of percutaneous treatment of mesh-related seroma to salvage the mesh. Methods: Between October 2015 and December 2017, a total of four patients [three females, one male; mean age, 68.5 +/- 22 years (range, 61-83 years)] with repaired ventral hernia who underwent percutaneous drainage for the treatment of peri-mesh seroma were evaluated, retrospectively. In all patients, ultrasound was used to diagnose seroma and was the guiding imaging method during percutaneous procedures. General purpose pigtail-percutaneous drainage sets were used in all patients. Ethanol (96%) was used for sclerotherapy, and a fibrinolytic agent was used to destroy septa in multilocular collections. Laboratory investigations and comorbidities were evaluated in hospital data service, retrospectively. Mainly, the clinical success rates were evaluated, and technical success rates and procedure-related morbidity and mortality were also evaluated. Results: A total of 11 percutaneous drainage sessions (median, 2; range 1-6) were performed in four patients. The mean volume of fluid collections was 807.3 +/- 3006 cc (median, 291 cc; range, 114-3120 cc). There was no significant difference between the mesh sizes. A technical success rate was 100%. There was no procedure-related morbidity and mortality. The mean of the recurrence time of the peri-mesh seroma was 3.5 +/- 11 months (median, 2 months; range, 1-12 months). In all patients, during the follow-up, seroma was accumulated repetitively. Conclusion: Percutaneous treatment is an effective management option to salvage the mesh in patients with mesh-related seroma who are poor surgical candidates or whose mesh cannot be removed.Öğe Estimation of sex from femoral bone using radiological imaging methods in Turkish population(E Schweizerbartsche Verlagsbuchhandlung, 2024) Bakici, Rukiye Sumeyye; Ocal, Zeynep Ayvat; Meral, Orhan; Oner, Zulal; Oner, SerkanSex estimation is leading to determine the biological profile in forensic medicine. The aim of this study is to research the effectiveness of logistic regression (LogR) and discriminant function analysis (DFA) to create sex estimation models on femur images obtained with Computed Tomography (CT) angiography and to address the differences of femur, which show sexual dimorphism, among populations. All parameters were measured on three planes by adjusting the 300 CT angiography images from 150 women and 150 men that focused on the left femur to the orthogonal plane with standard magnification. The subgroup, which included 30 images randomly generated from these images, was measured twice with an interval of 3 weeks by the first radiologist and once by the second radiologist. According to the Fisher's Linear Discriminant analysis, which was evaluated with ten parameters in the study, it was concluded that the power of discriminating women was 96.7%, the power of discriminating men was 98.7%, and the total discrimination power was 97.7%; these results were 98%, 99.3%, and 98.7%, respectively according to LogR. In this study, DFA and LogR analysis showed that femur provided a very good rate of sexual dimorphism. A database belonging to the Turkish population was created for the femur, allowing for comparison between populations.Öğe Evaluation of congenital rib anomalies with multi-detector computed tomography in the Turkish population(Via Medica, 2024) Oner, Zulal; Oner, Serkan; Sahin, Necati Emre; Cay, MahmutBackground: This study aimed to evaluate the congenital anomalies of ribs in the Turkish population using multi-detector computed tomography (CT) and to reveal the prevalence and distribution of these anomalies according to sexes and body sides. Materials and methods: This study included 1120 individuals (592 male, 528 female) over 18 who presented to our hospital with a suspicion of COVID-19 and who had thoracic CT. Anomalies such as a bifid rib, cervical rib, fused rib, Srb anomaly, foramen rib, hypoplastic rib, absent rib, supernumerary rib, pectus carinatum, and pectus excavatum, which were previously defined in the literature, were examined. Descriptive statistics were performed with the distribution of anomalies. Comparisons were made between the sexes and body sides. Results: A prevalence of 18.57% rib variation was observed. Females had 1.3 times more variation than males. Although there was a significant difference in the distribution of anomalies by sex (p = 0.000), there was no difference in terms of body side of anomaly (p > 0.05). The most common anomaly was the hypoplastic rib, followed by the absence of a rib. While the incidence of the hypoplastic rib was similar in females and males, 79.07% of the absent ribs was seen in females (p < 0.05). The study also includes a rare case of bilateral first rib foramen. At the same time, this study includes a rare case of rib spurs extending from the left 11(th) rib to the 11(th) intercostal space. Conclusions: This study demonstrates detailed information about congenital rib anomalies in the Turkish population, which may vary between people. Knowing these anomalies is essential for anatomy, radiology, anthropology, and forensic sciences.Öğe Evaluation of superior concha bullosa by computed tomography(Springer France, 2018) Ila, Kadri; Yilmaz, Nihat; Oner, Serkan; Basaran, Efser; Oner, ZulalConcha bullosa is generally regarded as pneumatisation of the middle turbinate in the nose. However, pneumatisation may also be seen in the superior and inferior turbinate. Computed tomography (CT) of paranasal sinuses is extremely helpful for the examination of this inaccessible area. Coronal CT sections of paranasal sinuses are particularly useful for surgical anatomy, as these images show nearly the same regions as the endoscopic examinations. The aim of this retrospective study was to evaluate the presence, incidence and unilaterality-bilaterality of superior turbinate pneumatisation and concomitant nasal pathologies. A total of 1000 patients who underwent CT of the paranasal sinuses because of headaches, nasal obstructions, anosmia, facial pain or facial trauma were evaluated retrospectively. Among the 1000 patients, superior pneumatized turbinate was seen on CT images of the paranasal sinuses in 149 (14.9%) cases. Of these patients, 84 were female, 65 were male, and the mean age was 38.14 years. Among 149 patients, 58 patients had bilateral superior pneumatized turbinate and the remaining 91 patients had unilateral superior pneumatized turbinate. 60.4% of the patients with superior pneumatized turbinate also had middle pneumatized turbinate. The superior pneumatized turbinate is an anatomical variation with an incidence ranging from 12.2 to 50%. The present study revealed that there is no relationship between volume size of the superior pneumatized turbinates and sinusitis, nasal septum deviation and paradoxical middle concha. It is very important to define anatomical variations in the preoperative CT evaluation of the paranasal sinuses.Öğe Evaluation of the Effect of Comorbid Bronchiectasis on Quality of Life in Patients with Chronic Obstructive Pulmonary Disease(Duzce Univ, Fac Medicine, 2022) Yilmaz, Cansu; Acat, Murat; Oner, Serkan; Inci, Habibe; Adahan, DidemObjective: The objective of this study was to evaluate the effect of comorbid bronchiectasis on quality-of-life in patients with Chronic Obstructive Pulmonary Disease (COPD). Method: 103 patients were diagnosed with COPD were included in our study. Spirometric measurements were made. The following measurement tools were used to collect data: 6-Minute Walk Test (6MWT), Modified Medical Research Council (mMRC) dyspnea scale, COPD Assessment Test (CAT), St. George Respiratory Questionnaire (SGRQ), and Short Form 36 (SF-36) quality-of-life questionnaire. Furthermore, all the patients' high Resolution Computed Tomography (HRCT) images for the last three years were included in the study. Result: 93.2% of the patients were male, with a mean age of 64.79 +/- 9.35 years. It was found that SGRQ and SF-36 quality-of-life scores decreased by half in all the patients compared to normal ones. The volume/forced vital capacity (FEV1/FVC) values in the first second of forced expiration were significantly lower in the group with bronchiectasis. A significant correlation was found to exist between the patients' mMRC dyspnea scale and CAT scores, 6MWT distances, and all subscales of SGRQ and SF-36. In addition, a significant correlation was also found to exist between FEV1 values and all subscales of SGRQ, and between subscales of SF-36. Conclusion: In our study, when we compared the quality-of-life scores of the patients with COPD and bronchiectasis with those with COPD alone, we found that the quality-of-life of both groups was impaired, but there was no significant difference between them.Öğe Gender prediction with the parameters obtained from pelvis computed tomography images and machine learning algorithms(Wolters Kluwer Medknow Publications, 2022) Secgin, Yusuf; Oner, Zulal; Turan, Muhammed Kamil; Oner, SerkanIntroduction: In the skeletal system, the most dimorphic bones employed for postmortem gender prediction include the bones in the pelvic skeleton. Bone measurements are usually conducted with cadaver bones. Computed tomography (CT) is an increasingly popular method due to its ease of use, reconstruction opportunities, and lower impact of age bias and provides a modern data source. Even when parameters obtained with different or same bones are missing, machine learning (ML) algorithms allow the use of statistical methods to predict gender. This study was carried out in order to obtain high accuracy in estimating gender with the pelvis skeleton by integrating ML algorithms, which are used extensively in the field of engineering, in the field of health. Material and Methods: In the present study, pelvic CT images of 300 healthy individuals (150 females, 150 males) between the ages of 25 and 50 (the mean female age = 40, the mean male age = 37) were transformed into orthogonal images, and landmarks were placed on promontory, iliac crest, sacroiliac joint, anterior superior iliac spine, anterior inferior iliac spine, terminal line, obturator foramen, greater trochanter, lesser trochanter, femoral head, femoral neck, body of femur, ischial tuberosity, acetabulum, and pubic symphysis, and coordinates of these regions were obtained. Four groups were formed based on various angle and length combinations obtained from these coordinates. These four groups were analyzed with ML algorithms such as Logistic Regression, Linear Discriminant Analysis (LDA), Random Forest, Extra Trees Classifier, and ADA Boost Classifier. Results: In the analysis, it was determined that the highest accuracy was 0.96 (sensitivity 0.95, specificity 0.97, Matthew's Correlation Coefficient 0.93) with LDA. Discussion and Conclusion: The use of length and angle measurements obtained from the pelvis showed that the LDA model was effective in estimating gender.Öğe An MRI Analysis of the Lumbar Lordosis Angle and Lumbar Muscle Thicknesses in Patients with Non-Specific Low Back Pain(Duzce Univ, Fac Medicine, 2023) Dagli, Ali Cihan; Oner, Serkan; Oner, Zulal; Dagli, Beyza YazganObjective: This study aimed to examine the relationship of lumbar lordosis angle and lumbar muscle thickness with non-specific low back pain (LBP) through magnetic resonance imaging (MRI) images.Methods: The study included 96 individuals (43 men/53 women) aged between 18-65 with non-specific LBP that is not explained by disc pathology based on MRI, who applied to affiliated Training and Research Hospital with the complaint of LBP between March-June 2019. Sociodemographic information was recorded using an LBP assessment form. The Oswestry LBP Disability Questionnaire was used for LBP disability. The thicknesses of muscle (m.) psoas major, m. multifidus, m. quadratus lumborum and m. erector spinae were measured corresponding to the L3-L4 vertebral level by using Radiant DICOM viewer program. The Cobb Angle method was used for lumbar lordosis angle determination. Measurements were made in three repetitions using the Radiant DICOM viewer program. Results: The results showed that an inverse relationship was found between the Oswestry Disability Index (ODI) and m. psoas major thickness (p<0.05). Given the comparison of right -left side muscle thicknesses, left side muscles were thicker (p<0.05). There were no significant differences observed between males and females in terms of lumbar lordosis angle (LLA). However, in terms of muscle thickness, males exhibited higher values, except for the transverse measurements of the right quadratus lumborum and left erector spinae muscles, which showed no significant differences (p < 0.05). Furthermore, a positive correlation was found between LLA and the transverse thickness of the left psoas major muscle (p = 0.034) and the anterior-posterior thickness of the bilateral erector spinae muscles (p < 0.001).Conclusions: In regard to inverse relationship between m. psoas major thickness and ODI, m. psoas major should be taken into consideration to alleviate the disability caused by LBP. Additionally, the difference on both sides is likely one of the causes of muscle imbalance, and this might be one of the reasons for LBP, thereby causing disability in daily tasks due to LBP.Öğe PARANASAL SINUS ANATOMICAL DIFFERENCES IN ELDERLY PATIENTS(Gunes Kitabevi Ltd Sti, 2020) Yilmaz, Nihat; Mulazimoglu, Selcuk; Oner, Serkan; Nacar, Erkay; Yilmaz, OrhanIntroduction: Endonasal endoscopic sinus surgeries performed on elderly patients can be challenging due to anatomical variations, and can be studied using preoperative computed tomography. The aim of the present study was to evaluate paranasal sinus anatomical differences in elderly patients compared to a younger control group. Materials and Methods: We retrospectively evaluated paranasal computed tomography scans of 47 elderly patients (>65 years old) (Elderly group) and 47 younger patients (Control group) for midfacial skeletal size (interzygomatic buttress distance, nasion-basion distance), anatomical variations, dimensions, and paranasal sinus volumes. Results: The mean age of the Elderly group was 69.89 years (65- 81 years) and the mean age of the Control group was 33.15 years (20-49 years). There was no significant difference in midfacial size between the two groups. The prevalence of Keros Type Ill olfactory fossa was significantly higher in the Elderly group than in the Control group (p<0.05). The Elderly group had a significantly lower mean maxillary sinus volume (p<0.01) and mean anteroposterior diameter of the sphenoid sinus (p<0.01) compared to the Control group. Furthermore, there was no significant difference in the maxillary sinus volume between the elderly edentulous and dentulous patients(p>0.05). Conclusion: Elderly patients have more Keros Type Ill olfactory fossa, which confers a higher risk of iatrogenic cerebrospinal fluid leakage during endoscopic sinus surgery. The preoperative detailed evaluation of computed tomography scans of elderly patients should include, but not be limited to, the ethmoid roof for deep olfactory fossa, and the sphenoid sinus for its narrow anterioposterior dimention.Öğe Popliteal Artery Branching Variations: A Study on Multidetector CT Angiography(Nature Portfolio, 2020) Oner, Serkan; Oner, ZulalDetermining the branching pattern of the popliteal artery (PA) is an important step in planning some radiological and surgical procedures. The aim of this study was to investigate the course and morphology of the terminal branches of the popliteal artery using multidetector computed tomography (MDCT) angiography, and also to determine possible role gender in branching pattern. Three-hundred forty lower extremity MDCT angiography images for 170 patients (118M, 52F), who were between 20-80 years old, were examined. Popliteal artery branching types were grouped as percentage incidences. TPT diameters and lengths in Type IA extremities were compared based on gender and right or left side. Anterior tibial artery (ATA), posterior tibial artery (PTA) and peroneal artery dominance rates were calculated. 5000 times measurement data was mixed so that the cascade mean filter values were calculated for the right and left TPT length each time. It was observed that Type IA was the most common branching pattern (89.4%). The variational pattern incidence was 10.6% and the most common category was Type III (4.1%). The most common pattern was Type IB (3.2%). Variational pattern was 2 times more prevalent in females when compared to the males. The mean TPT diameter was 4.5mm (2.7-7.3mm) and there was no difference based on gender and the right-left side. The most common dominant artery for the right and left legs was PTA in both genders. The cut-off values calculated for the right and left TPT independent of gender were 31.30 +/- 2.40 and 28.36 +/- 2.58, respectively. Three new subtypes were identified as short (S <= 2cm), standard (N=2-4cm) and long (L >= 4cm) in Type IA, since it is in a wide variational range although it is a typical PA branching pattern.Öğe Quantitative Evaluation of Normal Aqueductal Cerebrospinal Fluid Flow Using Phase-Contrast Cine MRI According to Age and Sex(Wiley, 2017) Oner, Zulal; Kahraman, Aysegul Sagir; Kose, Evren; Oner, Serkan; Kavakli, Ahmet; Cay, Mahmut; Ozbag, DavutThe aim of this study was cerebrospinal fluid (CSF) flow quantification in the cerebral aqueduct using phase-contrast cine magnetic resonance imaging (PCC-MRI) according to both sexes and three different age groups to obtain normative data. Seventy two volunteers with no cerebral pathology were included in this study. Subjects were divided into three age groups: 20-34 years, 35-49 years, and 50-65 years including equal gender groups. CSF flow's quantitatively evaluation was performed with images that were obtained by 1.5 T Magnetic Resonance (MR) unit from cerebral aqueduct level on the semi-axial plan. Between groups, peak velocity (cm sec21), average velocity (cm/s), forward volume (mL), reverse volume (mL), net forward volume (mL), and average flow over range (ml/ min)values of current flowing through aqueduct and average aqueductal areas were compared. There were no statistically significant differences in CSF flow parameters among different age groups and between sexes (P> 0.05). There was a statistically significant difference in average cerebral aqueduct area between the age group of 50-65 years and the other age groups (P50.002). The average aqueductal area was higher in the age group of 50-65 years. Normal aqueductal CSF flow parameters evaluated with PCC-MRI don't show a significant difference by age and sex. We have achieved the lower and upper values of these parameters would be useful in future clinical studies. The size of aqueductal area may also be explained by atrophy-dependent ventricular system dilatation in the elderly. (C) 2016 Wiley Periodicals, Inc.Öğe Radiological Findings of the Primary Female Urethral Malignant Melanoma: A Rare Case Report(Aves, 2019) Oner, Serkan; Erdem, Gulnur; Ozdemir, Zeynep Maras; Gunes, Ali; Unlu, SerkanPrimary malignant melanomas of the female urethra are rare tumors with poor prognosis. Biopsy of the detected urethral mass was performed in a 71-year-old woman who presented with hematuria and voiding dysfunction. No other localized lesions were detected. The patient was diagnosed with primary malignant melanoma of the urethra according to the histopathologic and immunohistochemical findings. Immunohistochemical staining revealed that the tumor cells were immunoreactive for vimentin, HMB-45, S-100, and Melan-A. The present study aimed to present radiological findings of very rare primary urethral malign melanoma with histopathologic correlation and to review the relevant literature.Öğe The Relationship Between Trunk Muscle Thickness and Static Postural Balance in Older Adults(Human Kinetics Publ Inc, 2020) Acar, Ece; Cankaya, Tamer; Oner, SerkanTrunk muscles are required for safety of movement in aging. The authors aimed to investigate the relationship between trunk muscle thickness and the static postural balance in older adults. A total of 31 females and 23 males with a mean age of 73.39 +/- 6.09 completed the study. The thickness of the trunk muscles was determined with ultrasound imaging. Postural balance was assessed with force plate. There was a positive weak correlation between right and left upper rectus abdominis muscle thickness and anterior stability area (p < .05, r> .3). The negative and moderate correlation was determined between the left lower rectus abdominis and the perturbated stability sway value (p < .01, r> .5). The increase in trunk muscle thickness in older adults increases the postural stability area and decreases the postural sway especially in the mediolateral direction.Öğe The right vertebral artery originating from the right occipital artery and the absence of the transverse foramen: a rare anatomical variation(Springer France, 2017) Oner, Zulal; Oner, Serkan; Kahraman, Aysegul SagirVariations in the origin of the vertebral artery (VA) is a congenital anomaly that occurs during embryological development. Multiple variations related to VA origin have been reported in the literature. Abnormal VA origin is usually determined as incidental findings during angiographic or postmortem anatomical studies. Although most of the cases are asymptomatic, in patients with VA anomaly symptoms such as dizziness have been described. The anomalous variation in the origin of the right VA is rare and separated into three categories: (1) originating from the aorta, (2) originating from the carotid arteries, (3) duplicated origin. In this case, we aimed to present the right VA originating from the right occipital artery and concomitant anomalies of the transverse foramen that have not been reported previously according to our knowledge in literature. In a 32-year-old female patient referred to our hospital because of dizziness, the right VA was not observed on magnetic resonance imaging and computed tomography angiography (CTA) examination was performed. CTA showed hypoplasia of the right transverse foramen at the levels of the C1, C5 and C6 vertebrae and aplasia of the right transverse foramen at the levels of the C2, C3 and C4 vertebrae. The right VA originating from the right occipital artery continues to its normal course by entering the cranium through the foramen magnum at the level of the atlantooccipital junction.Öğe Sex estimation using sternum part lenghts by means of artificial neural networks(Elsevier Ireland Ltd, 2019) Oner, Zulal; Turan, Muhammed Kamil; Oner, Serkan; Secgin, Yusuf; Sahin, BunyaminIn addition to the pelvis, cranium and phalanges, the sternum is also used for postmortem sex identification. Bone measurements may be obtained on cadaveric bones. Alternatively, computerized tomography may be used to obtain measurements close to the original ones. Moreover, usage of artificial neural networks (ANNs) in the field of medicine has started to provide new horizons. In this study, we aimed to identify sex by an ANN using lengths of manubrium sterni (MSL), corpus sterni (CSL) and processus xiphoideus (XPL) and sternal angle (SA) from computerized tomography (CT) images brought to an orthogonal plane. This study used the thin-slice thoracic CT images of 422 cases (213 female, 209 male) with an age range of 27-60 years brought to the orthogonal plane. Measurements of MSL, CSL, XPL and SA were analyzed with a multilayer artificial neural network that used stochastic gradient descent (SGD) for optimization and two hidden layers. MSL, CSL and XPL were longer, and SA was wider in men (MSL p = 0.000, CSL p = 0.000, XPL p = 0.000, SA p = 0.02). In the case of the two hidden layers of the network with 20 and 14 neurons in the hidden layers, respectively, learning rate of 0.1 and momentum coefficient of 0.9, the accuracy (Acc) of sex prediction was 0.906. In order to define a more realistic performance of the network, bootstrap was run with the confidence interval of 94%. A sensitivity (Sen) value of 0.91 and a specificity (Spe) value of 0.90 were calculated. The success rates that were achieved in sex identification with measurements on the skeleton using ANN were observed to be higher than those achieved by linear models. Also, sometimes all parts of the bones may not be found or might be deformed. In this case, the number of parameters used for the estimation will be incomplete. The ANN has the strong advantage to be able to estimate despite the missing parameter. (C) 2019 Elsevier B.V. All rights reserved.
