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2010 17th Iranian Conference of Biomedical Engineering (ICBME)最新文献

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Fabrication and characterization of sol-gel hydroxyapatite-forsterite-bioactive glass nanocomposite coating for biomedical applications 生物医学用溶胶-凝胶羟基磷灰石-森林石-生物活性玻璃纳米复合涂层的制备与表征
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5705011
M. M. Sebdani, M. Fathi
{"title":"Fabrication and characterization of sol-gel hydroxyapatite-forsterite-bioactive glass nanocomposite coating for biomedical applications","authors":"M. M. Sebdani, M. Fathi","doi":"10.1109/ICBME.2010.5705011","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5705011","url":null,"abstract":"Fabrication and characterization of hydroxyapatite-forsterite-bioactive glass nanocomposite coating was the aim of this work. The sol-gel technique was used to perform hydroxyapatite-forsterite-bioactive glass nanocomposite coating on 316L stainless steel (SS). The X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) techniques were used to investigate the microstructure and morphology of the coating. Results show that the suitable temperature for calcination was 600 °C. At this temperature, the homogenous and crack-free coating could attach to the 316L SS substrate. The result of EDX analysis of hydroxyapatite-forsterite-bioglass coated 316L SS surface indicated the consisting elements of prepared hydroxyapatite-forsterite-bioglass nanocomposite coating and the substrate. Hydroxyapatite-forsterite-bioactive glass nanocomposite coating might be a good candidate for biomedical application.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116635044","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}
引用次数: 2
Thermal response of cutaneous thermoreceptors: A new criterion for the human body thermal sensation 皮肤热感受器的热反应:人体热感觉的新判据
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5705004
A. Zolfaghari, M. Maerefat
{"title":"Thermal response of cutaneous thermoreceptors: A new criterion for the human body thermal sensation","authors":"A. Zolfaghari, M. Maerefat","doi":"10.1109/ICBME.2010.5705004","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5705004","url":null,"abstract":"So far, all of the thermal sensation models have been developed on the basis of energy balance equations for each compartment of the human body. But, the human body feels thermal environment by response of cutaneous thermoreceptors, not by balance of energy. Therefore, the mentioned models are not in conformity with the physiology of thermal sensation and because of this, they can not accurately predict the thermal sensation of the human body in some complex conditions. For the mentioned reasons, we attempt to represent the human body thermal sensation as a function of the thermoreceptors' response. Accordingly, in the present study, a new criterion index for evaluating the thermal sensation has been introduced on the basis of cutaneous thermal responses. This index has been verified by extensive comparisons with the published analytical and experimental results where a good agreement was found under both steady-state and transient conditions. Therefore, the new criterion index can be utilized for evaluating of the body thermal sensation in a wide range of personal/environmental conditions.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132429900","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}
引用次数: 3
Transforming of images information to the implant part of retinal prosthesis, by converting of images to bit formats 通过将图像转换为位格式，将图像信息转换到视网膜假体的植入部分
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5704985
Shabnam Novin, H. Abrishami Moghaddam, A. M. Sodagar
{"title":"Transforming of images information to the implant part of retinal prosthesis, by converting of images to bit formats","authors":"Shabnam Novin, H. Abrishami Moghaddam, A. M. Sodagar","doi":"10.1109/ICBME.2010.5704985","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5704985","url":null,"abstract":"Much recent research attention has focused on providing a vision substitute to blind people through electrical stimulation of a component of the visual system. This approach is referred to as “visual prosthesis”. The device consists of an extra ocular and an intraocular unit. The implantable component receives power and a data signal via a telemetric inductive link between the two units. The extra ocular unit includes a video camera and video processing board and a telemetry protocol encoder chip. The intraocular unit consists of a retinal chip with a telemetry protocol decoder, a stimulus signal generator, and an electrode array. Yet little work on devices that encode visual images into electrical stimuli have been reported to date. In this paper we focus on the information that should be transformed to the stimulator of electrodes. The idea is to transfer image information to the implant unit, in a “bit by bit” fashion.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132903921","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}
引用次数: 1
Investigation of viscoelastic properties of human liver tissue using MR elastography and FE modeling 利用磁共振弹性成像和有限元模型研究人肝组织的粘弹性特性
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5705001
M. Haghpanahi, H. A. Naeeni
{"title":"Investigation of viscoelastic properties of human liver tissue using MR elastography and FE modeling","authors":"M. Haghpanahi, H. A. Naeeni","doi":"10.1109/ICBME.2010.5705001","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5705001","url":null,"abstract":"Viscoelasticity is an inherent property of the soft biological tissue and is increasingly used as a diagnostic parameter, e.g. in characterizing liver fibrosis and breast tumors or tissue-mimicking phantoms preparation. MR elastography (MRE) enables the noninvasive determination of the viscoelastic behavior of human internal organs. In this study, multifrequency magnetic resonance elastography was used to investigate and validate the numerical simulation of liver viscoelastic phantom generated by ABAQUS. The dynamic behavior of shear storage (G′) and loss moduli (G″) obtained by MRE at different frequency ranges were used to generate viscoelastic FE model of liver tissue. Then, shear modulus(μ) and shear viscosity(η) were compared to other experimental data. MRE validate the finite element as an effective technique for measurement of rheologic material properties.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"306 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133270189","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}
引用次数: 9
Development, design and implementation of a heart rehabilitation system based on External Counter Pulsation (ECP) 基于体外反搏(ECP)心脏康复系统的开发、设计与实现
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5704970
Saeed Alikhani, Mehdi Hosseinzadeh, E. D. Farahani, M. Mikaili
{"title":"Development, design and implementation of a heart rehabilitation system based on External Counter Pulsation (ECP)","authors":"Saeed Alikhani, Mehdi Hosseinzadeh, E. D. Farahani, M. Mikaili","doi":"10.1109/ICBME.2010.5704970","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5704970","url":null,"abstract":"One of the most common diseases in the world is coronary arteries stenosis, which can be treated by non-invasive rehabilitation methods. In current paper, we discuss the development, design and implementation of a heart rehabilitation system based on a method named ECP (External Counter Pulsation). In this system, external counter pressure pulses are applied by inflating several cuffs that are wrapped around patient's leg. These pulses are applied on diastole phase of heart cycle. The proper timing of applying pulses is decided by recording ECG and detecting R peaks. Using this system, the patient's coronary blood flow will be improved and after some treatment sessions, it's shown that there will be a significant improvement in the performance of the coronary arteries.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129093801","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}
引用次数: 0
Effect of fluorapatite nano particles as reinforcement on the biodegradation behavior of magnesium-based nanocomposite 氟磷灰石纳米颗粒增强剂对镁基纳米复合材料生物降解行为的影响
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5705017
M. Razavi, M. Fathi, M. Meratian
{"title":"Effect of fluorapatite nano particles as reinforcement on the biodegradation behavior of magnesium-based nanocomposite","authors":"M. Razavi, M. Fathi, M. Meratian","doi":"10.1109/ICBME.2010.5705017","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5705017","url":null,"abstract":"The aim of this work was to evaluate the effect of fluorapatite (FA) nano particles content on biodegradation behavior of a nanocomposite (AZ91-FA) made of AZ91 magnesium alloy as matrix and FA nano particles as reinforcement. Bio-corrosion behavior of prepared AZ91-FA nanocomposites was evaluated. The results showed that the addition of FA nano particles to the AZ91 magnesium alloy as reinforcement can accelerate and promote the formation of calcium magnesium phosphate and calcium carbonate, and in turn provide much better protection for the matrix alloy. The formation of calcium magnesium phosphate on the surface is expected to improved osteoconductivity of the AZ91-FA nanocomposites in the body. The results also showed that AZ91-FA nanocomposites presented increased corrosion resistance compared to the AZ91 magnesium alloy and the corrosion resistance of the AZ91-FA nanocomposites increased with an increase in FA content.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116240585","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}
引用次数: 1
Effect of cognitive task on delta and beta EEG synchronization 认知任务对脑电图同步的影响
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5704925
M. Nazari, M. Ahmadlou, F. Wallois
{"title":"Effect of cognitive task on delta and beta EEG synchronization","authors":"M. Nazari, M. Ahmadlou, F. Wallois","doi":"10.1109/ICBME.2010.5704925","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5704925","url":null,"abstract":"Synchronization as a measure of quantification of similarities in dynamic systems is an important concept in many scientific fields such as neuroscience. A new measure of synchronization, fuzzy SL, was used to investigate overall cortical functional connectivity during a cognitive task compared to resting conditions. High-resolution electroencephalogram (EEG) was recorded during eyes-open resting (EO1), continuous performance test (CPT), and eyes-open resting again (EO2) in 16 healthy children. Global fuzzy SL for delta and beta bands was calculated per condition. The opposite pattern was observed within conditions; delta increased but beta decreased from the EO1 to CPT condition. From the CPT to EO2, changes in the synchronization were also opposite. The findings might be interpreted as condition-specific modulation of functional connectivity of brain neuronal networks.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114375455","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}
引用次数: 0
Biocompatibility evaluation of bioglass nanoparticles to chondrocyte cells by isothermal microcalorimetry 用等温微热法评价生物玻璃纳米颗粒与软骨细胞的生物相容性
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5705010
A. Doostmohammadi, A. Monshi, M. Fathi, S. Karbasi, R. Salehi, O. Braissant, A. U. Daniels
{"title":"Biocompatibility evaluation of bioglass nanoparticles to chondrocyte cells by isothermal microcalorimetry","authors":"A. Doostmohammadi, A. Monshi, M. Fathi, S. Karbasi, R. Salehi, O. Braissant, A. U. Daniels","doi":"10.1109/ICBME.2010.5705010","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5705010","url":null,"abstract":"This study aimed at the biocompatibility evaluation of bioglass nanoparticles to chondrocyte cells using isothermal micro/nano calorimetry (IMNC), which is a new method to study cell/biomaterial interactions. For this purpose, 63S bioglass nanoparticles were made via sol-gel method and primary characterization was carried out on the particles. XRD analysis showed the amorphous structure of the glass and the particle size and morphology were investigated by SEM. Finally the bioglass nanoparticles' biocompatibility with yeast and cultured human chondrocyte cells was evaluated using IMNC. The results showed no deleterious effect on chondrocyte growth and they can grow, proliferate and live on beside bioglass nanoparticles. In another word, the obtained results from this study confirmed the growth, proliferation and viability of chondrocyte cells close to 63S bioactive glass nanoparticles at low concentrations.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114915168","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}
引用次数: 1
Usage of digital speckle correlation method by determining fracture properties of PMMA bone cement for clinical application 数字散斑相关法测定PMMA骨水泥骨折特性的临床应用
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5705003
S. Jalali, H. B. Ghavifekr, A. Ebrahimi
{"title":"Usage of digital speckle correlation method by determining fracture properties of PMMA bone cement for clinical application","authors":"S. Jalali, H. B. Ghavifekr, A. Ebrahimi","doi":"10.1109/ICBME.2010.5705003","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5705003","url":null,"abstract":"Polymethylmethacrylate (PMMA) bone cement has been widely used in orthopaedic surgery. Therefore, a precise and accurate knowledge of its fracture properties is essential. Traditional fracture tests performed with tensile machine supported with finite element analysis do not provide an accurate and precise statement about fracture behaviour of materials. The fracture test techniques can be enhanced with a noncontact optical measurement method, named digital speckle correlation, which is implemented in this work to correct the measured results. All required experimental setup and conditions is explained. Experimental results supported by finite element analysis and verified with this auxiliary method are demonstrated.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124154578","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}
引用次数: 0
An intelligent approach for optimal regulation of blood glucose level 一种优化调节血糖水平的智能方法
2010 17th Iranian Conference of Biomedical Engineering (ICBME) Pub Date : 2010-11-01 DOI: 10.1109/ICBME.2010.5704984
K. Beyki, M. Javan, Shojaee G. Kambiz, M. M. Neshati
{"title":"An intelligent approach for optimal regulation of blood glucose level","authors":"K. Beyki, M. Javan, Shojaee G. Kambiz, M. M. Neshati","doi":"10.1109/ICBME.2010.5704984","DOIUrl":"https://doi.org/10.1109/ICBME.2010.5704984","url":null,"abstract":"Diabetes mellitus, a situation resulting from the inability of the pancreas in controlling blood glucose level, can lead to serious long-term complications and death. In this paper, the model of type-1 diabetes mellitus has been studied considering the inputs of the system which are daily meals and the amount of insulin injected. With the help of particle swarm optimization algorithm and the use of proposed controller based on the Hammerstein model, an optimized value of injected insulin has been determined in order to control blood glucose level. Results obtained have been compared to results of the classic controller, and that demonstrates improvement in operation of the proposed controller's algorithm.","PeriodicalId":377764,"journal":{"name":"2010 17th Iranian Conference of Biomedical Engineering (ICBME)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125638615","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}
引用次数: 11
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