2015 19th National Biomedical Engineering Meeting (BIYOMUT)最新文献

{"title":"Image processing based vascular network analysis","authors":"Sercan Erbakan, I. Bakar, E. Z. Engin, Kubra Seker, Ibrahim Akkaya, M. Engin","doi":"10.1109/BIYOMUT.2015.7369453","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369453","url":null,"abstract":"Uncontrolled new blood vessel formation (angiogenesis) is really important step for the growth and metastasis of cancer cells. Nowadays, drugs which inhibit new vessel growth have been developed for cancer treatment. In cancer treatment management, it is vital to know which extend the vascularity reaches in order to guide the treatment. Vascular imaging devices and methods of treatment are available in clinical applications. However, many of them are invasively, non-portable and expensive systems. On the other hand, early diagnosis of skin and breast cancers gradually increased, which greatly increases the rate of survival. Hence, the need for a portable, cheap and non-invasive system plays an important role for the monitoring of early diagnostic conditions and/or the structure of a diagnosed tumor. To detect the new blood vessel formation, analysis of vessel complexity and width can be used on the recorded images by the systems. In this study; artificial vascular networks are used to determine the image processing techniques for using these analyses.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"326 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113986981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Automatic computer-aided detection of Multiple Sclerosis (MS) lesions on MR images","authors":"Z. Ekgi, Muhammed Emin Ozean, A. Aralaşmak, E. Dandıl, M. Çakiroglu","doi":"10.1109/BIYOMUT.2015.7369443","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369443","url":null,"abstract":"Multiple Sclerosis (MS) is a central nervous system (CNS) disorders resulting from damage to the myelin sheath which helps to ensure the transmission of messages between the brain and spinal cord. MS lesions occur in patients with damage to the myelin sheath. Progression of MS lesions is important for examining the disease. MS lesions often Magnetic Resonance Imaging (MRI) is determined and planned the follow-up / treatment processes. In this study, a computer-aided detection system has been proposed to diagnose MS lesions on FLAIR MR images. The proposed system uses Fuzzy-C Means (FCM) and morphological operations for segmentation of MS lesions. In the study, the lesions detected by aid of physicians and the lesions detected by means of the proposed system have been compared according to the Jaccard index. Similarity rate in the comparison operation on a total of 90 MR images is calculated as 91.2%. Consequently, it has been shown that the proposed system successfully detected the MS lesions.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"305 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133746222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observation Of stress distribution On a 3D wrist model after scaphoid fracture","authors":"Eser Pala, H. Oflaz","doi":"10.1109/BIYOMUT.2015.7369448","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369448","url":null,"abstract":"Scaphoid bone fractures are very often among carpus fractures. However, sacphoid fractures are diagnozed tardily. So, this lateness changes the treatment prognosis. Kirschner wires are mostly preffered because of its easiness of use as scaphoid fracture detection materials. Aim of this study is analyzing the stress distrubution of wrist and the change of total deformation before and after scaphoid fractures and also after the application of Kirschner wire. Segmentation process was done on CT images of wrist and 3D “stl” model was obtained and converted to solid model and finite element analysis were performed to realise this study. Metacarpal, carpaş, radius and ulna bones were linked as linear arc before the analysis. Afterwards, total stress distrubution and deformation were analyzed according to applied forces on metacarpal bones of fixed radius and ulna bones. By regarding the finite element analysis results, von-Misses stress distrubution were found 240,62 MPa before scaphoid fracture, 338,27 MPa after scaphoid fracture and 2678,1 MPa with after Kirschner wire application. Consequently, stress accumulation were observed on both scaphoid bone and Kirschner wire after scaphoid fracture. After this study, different fixation methods should be compared under same boundry conditions and then the most suitable fixation method may be determined. Moreover, it is encouraging that the most suitable personel implant designs may be done by using engineering approaches mentioned in this study.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129618585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of glucose concentration by pulsed laser based photoacoustic method","authors":"C. Togay, Samet Yilmaz, Ibrahim Akkaya, Anıl Işıkhan, E. Z. Engin, M. Engin","doi":"10.1109/BIYOMUT.2015.7369464","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369464","url":null,"abstract":"The aim of this study is to asist in the measurement of blood glucose concentration in an in-vitro medium by using the photoacoustic method. The tissue was mimicked with gel phantoms and different glucose concentrations were added. The sample which was in the setup was illuminated by a pulsed based laser. The acoustic vibrations that arose in the phantom medium were detected via electret microphone and processed with an electronical circuit and then recorded. When the results were evaluated, there was a correlation with glucose concentration proportions and with the photoacoustic signal amplitudes.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128990024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evoked potential in response to familiar and unfamiliar face Stimuli and their time-location analysis","authors":"Abdurrahman Ozbeyaz, S. Arıca","doi":"10.1109/BIYOMUT.2015.7369457","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369457","url":null,"abstract":"Evoked potentials (EP) occur against a specific stimulus as a response in EEG signal. The objective of this study is to determine time and location where the evoked potentials obtained in a familiar/unfamiliar face recognition experiments, are most distant. EEG signals have been acquired from 10 subjects in different sessions and the time and position where ERP signals obtained in response to familiar and unfamiliar face stimuli have been analyzed using statistical methods. This study can be considered as a first step for an EEG signal classification problem of an familiar and unfamiliar face recognition experiment. Such a classification both can help to the experts in the diagnosis of some diseases in the visual memory areas of the brain and can contribute to the identification of suspects in criminal inspections.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115553584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biomechanical comparison of stability of resorbable plate-screw fixation systems in different configurations after sagittal split ramus osteotomy","authors":"M. Ulu, S. Kelebek, Serkan Dikici, H. Akçay, H. Oflaz","doi":"10.1109/BIYOMUT.2015.7369463","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369463","url":null,"abstract":"Sagittal split ramus osteotomy (SSRO) has been successfully and widely applied in the treatment of specific dentofacial deformities. Many techniques and materials have been used by surgeons like wire osteosynthesis miniplates and screws used for fixation and stabilization after SSRO. While most post surgical complications related to titanium mini plates and/or screws requring second surgery to remove and disadvantages of metalic fixations have been developed and employed in studies focusing on evaluation of resorbable metarials in mandibular sagittal split osteotomy fixation and stabilization. Recently more surgeons have prefered to use resorbable materials in upregulation, stil the reliability of resorbable materials at different jaw sites after osteotomies or fractures remains a matter of concern for surgeons which limits to use resorbable materials systems by such surgeons. In literature, number of studies about analysis and comparison of clinical results of sagittal split ramus osteotomy performed with the use of resorbable plate/screw systems have not been satisfactory enough yet. In this study, 8 polyurethane synthetic mandibular replicas (Synbone 8598, Switzerland) were used and totally 2 groups were comprised. Afer employed SSRO on samples, fixations of bone segments were achieved using resorbable plate/screw systems (Inion CPS sistem, Tampere, Finland) in different configurations. Next, stabilities of fixation conducted by different systems were compared with together applying biomechanical loading tests. Then, stabilities of fixations which were applied with various systems were compared by applying biomechanical load tests. For this aim, 20N, 60N, 120N, 140N and 200N compressive loads were performed to each tooth on models by using of servohydrolic universal axial test machine. Experiments were carried out in biological test cabin which was full with continuously circulating physiological saline solution (PBS) at constant 37°C to mimic in vivo successfully. Compressive load behaviors of madibles which were in posterior and anterior region were recorded by using of non-contact video extensometer. According to the results, mandible group fixed by using screw was found more stabile than the group fixed by plate. Moreover, less strain accumulation was observed in neighborhood of the cut zone in posterior part of osteotomy applied mandible in comparison with further areas. In conclusion resorbable screw-plate systems provide sufficient stability in the fixation process. Only the fixation with screws is safer than plate+screw fixation.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116591792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Naive Bayes classification of neurodegenerative diseases by using discrete wavelet transform","authors":"S. Bilgin, Anil Can Guzeler","doi":"10.1109/BIYOMUT.2015.7369440","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369440","url":null,"abstract":"The main objective of this study is the detection and analysis of some neurodegenerative disorders. It is possible to determine the classification of Especially ALS (Amyotrophic Lateral Sclerosis), PD (Parkinson's Disease) and HD (Huntington's Disease) with respect to analysis of gait signals. Records obtained from gait signals can be converted the statistical values using DWT (Discrete Wavelet Transform). And also neurodegenerative gait signals are compared to control signals recorded from healthy subjects in the study. Other studies have been carried out for 5 minutes recordings in the literature. The innovative aspect of this study is to obtain the results of the recording by taking for 1 minute. So, this approach proposes a short measurement time for classification of neurodegenerative diseases. As a result, the classification of neurodegenerative diseases is obtained from gait signals using DWT and Naive Bayes method in the study and the discrimination of ALS disease can be achieved by using this method.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127583720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EOG controlled direction detect system with neuro-fuzzy approach","authors":"Hande Erkaymaz, M. Ozer, Ceren Kaya","doi":"10.1109/BIYOMUT.2015.7369442","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369442","url":null,"abstract":"The eye, which has the most advanced features among sense organs, has a perfect functioning on people. Furthermore, as it is placed in the lead role of vision, shows the importance for people is quite big. Nowadays, biomedical devices developed for patients who have mobility are benefiting from eye movements. Electrooculogram studies are especially designed on the basis of the signal depending on the movement of your eyes. Electrical origin of EOG biological signal, that occur around the eye pupil, makes an attempt to meet the needs of patients by the right, left, up, down and blinking action. In this study, 4 basic differences existing in the direction of movement using voltage controlled EOG signal studies have tried to determine the Neuro-Fuzzy model. Determining the direction of Neuro-Fuzzy control system demonstrates how it can be successfully used as. In addition, control algorithms of artificial intelligence systems that use this kind of eye signals benefiting from the input of the detection process is advantageous in the classification of complex environment.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131663342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Glucose measuring by faraday approach based magneto-optical method in-vitro environment for medical diagnosis","authors":"I. Yariçi, B. Cetintas, A. J. Pahnvar, Y. Ozturk, M. Engin","doi":"10.1109/BIYOMUT.2015.7369438","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369438","url":null,"abstract":"In this study, in order to help the blood glucose measurement on diabetic patients by using optical activity of glucose and the changing polarization of light under a magnetic field, an optical system determining the glucose concentration in the blood phantom and operating in-vitro conditions is being developed [4,5]. In that designed optical system, the alteration of the polarization angle mechanically will lead to the user and system errors. Alternatively, the study aims to prevent the mechanical origin of this error via the magneto-optical polarization glass, whose Verdet constant is known, modified inside an coil. In the study, the polarization angle deviations from the sugar solution was measured by the Faraday approach based magneto-optical method in an in-vitro environment. It was observed that the calculated theoretical values and measured experimental data are compatible. Most blood glucose measuring methods cause discomfort (pain) for the patient as well as have the risk of infection[1]. Tthe optic based approach is one of the alternatively considered methods [2,3]. It shows that the solution of glucose concentration alternates the light polarization, which means the glucose is optically active. Another parameter that changes the polarization of light is the applied magnetic field via the propagation of light.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129030272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Poisson medical image matting with fuzzy input","authors":"Kamil Aktas, B. Dizdaroğlu","doi":"10.1109/BIYOMUT.2015.7369462","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2015.7369462","url":null,"abstract":"In this study, fuzzy input data has been considered for processing of Poisson medical image matting. Image matting is actually known as an image segmentation approach. But, fine detail information can be extracted from the background of the given image in the image matting. Although global Poisson image matting approach is applied to smoothed images, successful matting results can be obtained from medical images that may not be contain more fine detail information. In this study, fuzziness is included to the input data as a percent value and a generated result is compared with the classical Poisson image matting approach.","PeriodicalId":143218,"journal":{"name":"2015 19th National Biomedical Engineering Meeting (BIYOMUT)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115649705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}