Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130267
M. Aşık, Burak Guclu
A new device for correction of eyelid problems due to facial palsy was studied. Ineffectiveness of the upper eyelid of the paralyzed side for totally closure is called lagophthalmos which may cause drying and irritation8 rabbits were injected with local anesthetics to induce temporary facial palsy and Lagophthalmos. In order to provide functionality to the upper eyelids, Ferromagnetic pieces were placed on the eyelid of the rabbits. The newly designed device moves the eyelids by alternating the steel pieces. The control group didn't wear the device. The device group results and control group results were compared statistically. All animals observed during the experiment and recorded to video tapes. The data collected from video records were analyzed to test the statistical difference between control and the treated group.
{"title":"A device for functional and cosmetic treatment of the Lagophthalmos due to facial palsy","authors":"M. Aşık, Burak Guclu","doi":"10.1109/BIYOMUT.2009.5130267","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130267","url":null,"abstract":"A new device for correction of eyelid problems due to facial palsy was studied. Ineffectiveness of the upper eyelid of the paralyzed side for totally closure is called lagophthalmos which may cause drying and irritation8 rabbits were injected with local anesthetics to induce temporary facial palsy and Lagophthalmos. In order to provide functionality to the upper eyelids, Ferromagnetic pieces were placed on the eyelid of the rabbits. The newly designed device moves the eyelids by alternating the steel pieces. The control group didn't wear the device. The device group results and control group results were compared statistically. All animals observed during the experiment and recorded to video tapes. The data collected from video records were analyzed to test the statistical difference between control and the treated group.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"361 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122793875","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130325
Pinar Koymen Cagar, N. F. Ak Azem, U. Malayoğlu, A. Cakir
Biomaterials are compatible with neighbouring tissues while implanted in body and do not cause any undesirable reactions such as coagulation and inflammation. Metallic biomaterials have found wide spread application as orthopedic prosthesis and dental implants due to their high strength, great biocompatibility and corrosion durability. But their acceptance by the living tissues in the body is very difficult, if not impossible, as they are bioinert. It is a widespread method to coat the metallic implant surfaces with bioactive ceramic films in order to increase their compatibility and improve bone apposition in the body. Although various calcium phosphate (CaP) based bioactive ceramic compounds with structure similar to the bone exist, hydroxyapatite (HAP) coatings, that has approximately the same composition with biological apatite in the body, create interests in recent years. In this study HAP films coated by electrochemical deposition method on CoCrMo implant materials and effect of solution temperature on the films were determined.
{"title":"Effect of temperature on electrochemically deposited HAP films on CoCrMo substrate","authors":"Pinar Koymen Cagar, N. F. Ak Azem, U. Malayoğlu, A. Cakir","doi":"10.1109/BIYOMUT.2009.5130325","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130325","url":null,"abstract":"Biomaterials are compatible with neighbouring tissues while implanted in body and do not cause any undesirable reactions such as coagulation and inflammation. Metallic biomaterials have found wide spread application as orthopedic prosthesis and dental implants due to their high strength, great biocompatibility and corrosion durability. But their acceptance by the living tissues in the body is very difficult, if not impossible, as they are bioinert. It is a widespread method to coat the metallic implant surfaces with bioactive ceramic films in order to increase their compatibility and improve bone apposition in the body. Although various calcium phosphate (CaP) based bioactive ceramic compounds with structure similar to the bone exist, hydroxyapatite (HAP) coatings, that has approximately the same composition with biological apatite in the body, create interests in recent years. In this study HAP films coated by electrochemical deposition method on CoCrMo implant materials and effect of solution temperature on the films were determined.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"249 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121881133","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130296
M. Sinecen, Murat Çinar, Omer Karal, M. Engin, Y. Z. Atesçi, Metehan Makinaci, B. Cakmak
Prostat cancer is a disease which is the most common and which is also the second deadly in men. When prostat cancer can be diagnosed early, medical surgery operation can be performed and the disease can be treated.
{"title":"Diagnosis of Prostat Cancer using Artificial Neural Networks","authors":"M. Sinecen, Murat Çinar, Omer Karal, M. Engin, Y. Z. Atesçi, Metehan Makinaci, B. Cakmak","doi":"10.1109/BIYOMUT.2009.5130296","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130296","url":null,"abstract":"Prostat cancer is a disease which is the most common and which is also the second deadly in men. When prostat cancer can be diagnosed early, medical surgery operation can be performed and the disease can be treated.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126856024","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130302
A. Uyar, A. Bener, H. N. Ciray, M. Bahçeci
In this study, IVF embryo selection has been considered as a binary classification problem and predictibality of implantation outcome of individual embryos has been tested using Naive Bayes method. First, in order to perform classification experiments, an embryo based dataset has been constructed from database of Bahçeci IVF Centre. Since the class distribution of dataset is highly imbalanced (11% Pozitive and 89% Negative implantation outcomes) the decision threshold of Naive Bayes classifier has been optimized using the features of ROC analysis. Experimental results show that classification with optimized threshold performs better than classification with default threshold.
{"title":"Adjusting decision threshold in Naive Bayes based IVF embryo selection","authors":"A. Uyar, A. Bener, H. N. Ciray, M. Bahçeci","doi":"10.1109/BIYOMUT.2009.5130302","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130302","url":null,"abstract":"In this study, IVF embryo selection has been considered as a binary classification problem and predictibality of implantation outcome of individual embryos has been tested using Naive Bayes method. First, in order to perform classification experiments, an embryo based dataset has been constructed from database of Bahçeci IVF Centre. Since the class distribution of dataset is highly imbalanced (11% Pozitive and 89% Negative implantation outcomes) the decision threshold of Naive Bayes classifier has been optimized using the features of ROC analysis. Experimental results show that classification with optimized threshold performs better than classification with default threshold.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127642946","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130262
Yemen Alev Bahtiyar, Yasemin Erkan, Nurettin Acır
In this study, we introduce an artificial single trial auditory evoked potential signal generator which contributes to create the synthetic data set that are mostly used in biomedical engineering applications. The proposed system not only provides the comparison of the methods used in engineering applications but also it provides an objectivity in determining the performance of the novel systems to be designed in other studies. In this study, we have aimed to create synthetic data set by generating single trial auditory evoked potential at any arbitrary SNR level.
{"title":"Artificial single trial auditory evoked potential signal generator","authors":"Yemen Alev Bahtiyar, Yasemin Erkan, Nurettin Acır","doi":"10.1109/BIYOMUT.2009.5130262","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130262","url":null,"abstract":"In this study, we introduce an artificial single trial auditory evoked potential signal generator which contributes to create the synthetic data set that are mostly used in biomedical engineering applications. The proposed system not only provides the comparison of the methods used in engineering applications but also it provides an objectivity in determining the performance of the novel systems to be designed in other studies. In this study, we have aimed to create synthetic data set by generating single trial auditory evoked potential at any arbitrary SNR level.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"53 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127574886","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130276
Süleyman Sevinç, Baris Tanir
Fast developing information and communication technologies based on internet and mobile networks have changed our daily lives in a very positive way. Take for an example Diyahat.net, an important development in health information technologies, which enables diabetics to collect, store and manage data about blood glucose measurements, medication and diet lists using mobile technologies as well as internet. Diabetics, at their own will, can schedule the system to send themselves reminder SMS messages for blood glucose measurements, doctors' visits and medication times. Doctors can monitor their patients daily, if they wish, and can update patients' files as appropriate. Therefore both doctors and patients are kept in an active two-way communication. Patients can ask questions using the system to their doctors and receive comprehensive and detailed response resulting in significant time saved both by doctors and patients. The system becomes a significant source for patient motivation and lays the ground for a very effective environment for management of diabetes. Doctors can formulate best treatments for their patients, personalized and tailored for each patient's medical needs. Research done in this area and specifically one in Korea, based on a similar approach have proven that systems like Diyahat.net can help better control of blood glucose levels and of diabetes in general.
{"title":"Information and comunication technologies in the management of diabetes","authors":"Süleyman Sevinç, Baris Tanir","doi":"10.1109/BIYOMUT.2009.5130276","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130276","url":null,"abstract":"Fast developing information and communication technologies based on internet and mobile networks have changed our daily lives in a very positive way. Take for an example Diyahat.net, an important development in health information technologies, which enables diabetics to collect, store and manage data about blood glucose measurements, medication and diet lists using mobile technologies as well as internet. Diabetics, at their own will, can schedule the system to send themselves reminder SMS messages for blood glucose measurements, doctors' visits and medication times. Doctors can monitor their patients daily, if they wish, and can update patients' files as appropriate. Therefore both doctors and patients are kept in an active two-way communication. Patients can ask questions using the system to their doctors and receive comprehensive and detailed response resulting in significant time saved both by doctors and patients. The system becomes a significant source for patient motivation and lays the ground for a very effective environment for management of diabetes. Doctors can formulate best treatments for their patients, personalized and tailored for each patient's medical needs. Research done in this area and specifically one in Korea, based on a similar approach have proven that systems like Diyahat.net can help better control of blood glucose levels and of diabetes in general.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133306644","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130279
Gorkem Serbes, N. Aydin
Stroke, which is seen nowadays frequently, is the rapidly developing loss of brain functions due to a disturbance in the blood vessels supplying blood to the brain. The main reason for the stroke is the emboli which are particles bigger than red blood cells. Emboli can be detected by Doppler ultrasound. Embolic Doppler ultrasound signals are short duration transient like signals. These signals can be obtained from in-phase and quadrature-phase parts of the quadrature Doppler signals as forward and reverse signals by using the phase relationship between in-phase and quadrature-phase signals. Discrete wavelet transform is one of the methods used for analyzing these signals. A desired property in discrete wavelet transform is phase shift-invariance which can not be provided by ordinary discrete wavelet transform. To overcome this disadvantage dual-tree complex wavelet transform was introduced. But Doppler signals are dual channel signals and dual-tree complex wavelet transform must be applied twice. Therefore complexity of the transform increases. In this work, a new transform method reducing computational complexity is introduced.
{"title":"A new wavelet transform method for processing Doppler signals","authors":"Gorkem Serbes, N. Aydin","doi":"10.1109/BIYOMUT.2009.5130279","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130279","url":null,"abstract":"Stroke, which is seen nowadays frequently, is the rapidly developing loss of brain functions due to a disturbance in the blood vessels supplying blood to the brain. The main reason for the stroke is the emboli which are particles bigger than red blood cells. Emboli can be detected by Doppler ultrasound. Embolic Doppler ultrasound signals are short duration transient like signals. These signals can be obtained from in-phase and quadrature-phase parts of the quadrature Doppler signals as forward and reverse signals by using the phase relationship between in-phase and quadrature-phase signals. Discrete wavelet transform is one of the methods used for analyzing these signals. A desired property in discrete wavelet transform is phase shift-invariance which can not be provided by ordinary discrete wavelet transform. To overcome this disadvantage dual-tree complex wavelet transform was introduced. But Doppler signals are dual channel signals and dual-tree complex wavelet transform must be applied twice. Therefore complexity of the transform increases. In this work, a new transform method reducing computational complexity is introduced.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133379540","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130253
A. Ozdemir, K. Danisman, M. H. Asyali
Processing of ECG (Electro CardioGram) records by software- based systems was started in the beginning of the 1960s. Many studies on different techniques about this topic have been made in the last 20 years. ANN (Artificial Neural Network) is the tool that is mostly used in medical diagnosis systems because of the belief in its powerful prediction characteristics. However, the suggested ANN architectures in literature are very complex software-based architectures. Consequently, these models with high computational complexity can only be run on expensive processors. To enable the implementation of ANN models on mobile and cheap devices, the features of ECG signal, which are applied to ANN inputs, should be reduced. This approach enables the implementation of a simple ANN architecture. In this study, the features of ECG signal are reduced dramatically using PCA (Principle Component Analysis), while keeping the error of the ANN learning rate at an acceptable level such as 5%. As a result, a simple Matlab ANN model, which consists of eight inputs, a hidden layer with two neurons and one output neuron, is implemented on an FPGA (Field Programmable Gate Arrays) by using IEE 754 32 bits floating-point numerical representation.
{"title":"FPGA based arrhythmia classifier","authors":"A. Ozdemir, K. Danisman, M. H. Asyali","doi":"10.1109/BIYOMUT.2009.5130253","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130253","url":null,"abstract":"Processing of ECG (Electro CardioGram) records by software- based systems was started in the beginning of the 1960s. Many studies on different techniques about this topic have been made in the last 20 years. ANN (Artificial Neural Network) is the tool that is mostly used in medical diagnosis systems because of the belief in its powerful prediction characteristics. However, the suggested ANN architectures in literature are very complex software-based architectures. Consequently, these models with high computational complexity can only be run on expensive processors. To enable the implementation of ANN models on mobile and cheap devices, the features of ECG signal, which are applied to ANN inputs, should be reduced. This approach enables the implementation of a simple ANN architecture. In this study, the features of ECG signal are reduced dramatically using PCA (Principle Component Analysis), while keeping the error of the ANN learning rate at an acceptable level such as 5%. As a result, a simple Matlab ANN model, which consists of eight inputs, a hidden layer with two neurons and one output neuron, is implemented on an FPGA (Field Programmable Gate Arrays) by using IEE 754 32 bits floating-point numerical representation.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122580203","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130295
Reyhan Zengin, N. G. Gencer
In this study, forward problem of contactless electrical conductivity imaging is solved by using realistic-head model. Realistic-head model is modelled by a single volume with the ANSYS software and divided into hexahedral elements. Conductivity information for each element is obtained from MR gray-scale images obtained as a result of segmentation.For realistic-head model, a coil of radius 1 cm, 1 cm above the scalp and carrying a sinusoidal (50 kHz) current of 1 A is used as a source. Realistic-head modelis composed of the scalp, skull, brain fluid and brain (gray matter and white matter) tissues. For each tissue magnetic flux densities and current densities have been obtained.
{"title":"Forward problem solution for contactless electrical conductivity imaging with realistic head model","authors":"Reyhan Zengin, N. G. Gencer","doi":"10.1109/BIYOMUT.2009.5130295","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130295","url":null,"abstract":"In this study, forward problem of contactless electrical conductivity imaging is solved by using realistic-head model. Realistic-head model is modelled by a single volume with the ANSYS software and divided into hexahedral elements. Conductivity information for each element is obtained from MR gray-scale images obtained as a result of segmentation.For realistic-head model, a coil of radius 1 cm, 1 cm above the scalp and carrying a sinusoidal (50 kHz) current of 1 A is used as a source. Realistic-head modelis composed of the scalp, skull, brain fluid and brain (gray matter and white matter) tissues. For each tissue magnetic flux densities and current densities have been obtained.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123048671","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}
Pub Date : 2009-05-20DOI: 10.1109/BIYOMUT.2009.5130353
Ilke Eren
Thi study aims at an evaluation of vocational standards and qualifications both on national and EU levels in health industry with special stres on Turkey. After mentioning the previous works on vocational qualifications realized in Turkey in the sector, the results of a survey which questioned the needs of the sector had been communicated. The study informs on the subsequent efforts to establish Vocational Standards reyling on this survey.
{"title":"Human resources, vocational education and Vocational Standards in Turkish health industry: A self-evaluation of the sector","authors":"Ilke Eren","doi":"10.1109/BIYOMUT.2009.5130353","DOIUrl":"https://doi.org/10.1109/BIYOMUT.2009.5130353","url":null,"abstract":"Thi study aims at an evaluation of vocational standards and qualifications both on national and EU levels in health industry with special stres on Turkey. After mentioning the previous works on vocational qualifications realized in Turkey in the sector, the results of a survey which questioned the needs of the sector had been communicated. The study informs on the subsequent efforts to establish Vocational Standards reyling on this survey.","PeriodicalId":119026,"journal":{"name":"2009 14th National Biomedical Engineering Meeting","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117294824","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}
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