2nd Middle East Conference on Biomedical Engineering最新文献_第2页

Gold nanopillar microelectrodes on low temperature curing polyimide for the interface with electrogenic cells 金纳米柱微电极在低温固化聚酰亚胺上与电致电池的界面

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1109/MECBME.2014.6783205

C. Nick, P. Lippert, S. Quednau, H. Schlaak, C. Thielemann

{"title":"Gold nanopillar microelectrodes on low temperature curing polyimide for the interface with electrogenic cells","authors":"C. Nick, P. Lippert, S. Quednau, H. Schlaak, C. Thielemann","doi":"10.1109/MECBME.2014.6783205","DOIUrl":"https://doi.org/10.1109/MECBME.2014.6783205","url":null,"abstract":"Microelectrodes are a powerful tool for interfacing neural tissue with electronics, both for in vitro and in vivo. So called microelectrode arrays allow for electrical recordings as well as for electrical stimulations at many parallel sites. Their design and substrate may vary strongly with the field of application. For in vivo implants often flexible substrates are favoured causing low mechanical stress in the tissue. For the first time this type of flexible microelectrode array (MEA) chip shall be combined with the relatively new approach of nanostructured electrodes. Nanostructures help here to increase the electrode's surface and decrease its impedance resulting in a good the signal to noise ratio. This paper describes the fabrication process of Gold nanopillar microelectrode arrays (MEA) on low temperature curing polyimide for the interface with electrogenic cells. The low temperature curing polyimide is characterized and discussed in terms of electrical and mechanical properties. It is shown that using the proposed methods vertically aligned gold nanopillars can easily be integrated into a micro system on a flexible substrate. We found that electrical and mechanical properties of the polyimide layer strongly depend on its thickness.","PeriodicalId":384055,"journal":{"name":"2nd Middle East Conference on Biomedical Engineering","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131676104","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

Medical image fusion based on joint sparse method 基于联合稀疏方法的医学图像融合

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1109/MECBME.2014.6783216

Anuyogam Venkataraman, J. Alirezaie, P. Babyn, A. Ahmadian

引用次数: 3

Performance of Optical Flow tracking approaches for cardiac motion analysis 光流跟踪方法在心脏运动分析中的性能

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1109/MECBME.2014.6783226

Azza S. Hassanein, A. Khalifa, W. Al-Atabany, M. El-Wakad

{"title":"Performance of Optical Flow tracking approaches for cardiac motion analysis","authors":"Azza S. Hassanein, A. Khalifa, W. Al-Atabany, M. El-Wakad","doi":"10.1109/MECBME.2014.6783226","DOIUrl":"https://doi.org/10.1109/MECBME.2014.6783226","url":null,"abstract":"Tagging Magnetic Resonance Imaging (MRI) sequence is used for evaluating Left Ventricular contractility. In this technique, a pattern of spatially varying magnetism is applied at the end diastole. Analyzing the deformation of tag pattern during the cardiac cycle has wide applications for cardiac deformation analysis. Noninvasive myocardial tagging in MRI has shown great potential in measuring and studying the motion of the heart. This paper presents a mathematical model that simulates the real cardiac motion during myocardial tagging. We synthesized both the Spatial Modulation of Magnetization (SPAMM) and complementary Spatial Modulation of Magnetization (CSPAMM) tag patterns with arbitrary spatial frequency. Using this model, we tested the performance and limitations of different Optical Flow (OF) motion tracking techniques and compared them with the performance of Harmonic Phase (HARP) analysis technique. The results exhibit that the OF tracking accuracy differs from point to another with a noticeable over estimation at the end of systole. Also OF is performing better than HARP at the heart borders.","PeriodicalId":384055,"journal":{"name":"2nd Middle East Conference on Biomedical Engineering","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115635232","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: 6

Towards technology localization: Controlling treadmill speed using heart rate 迈向技术本土化:利用心率控制跑步机速度

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1109/MECBME.2014.6783220

Nazeeh Alothmany, Badr A. Mohy Al-Deen, Moayad H. Basyouni, Abdulrahman A. Hanbazaza, Ali M. Al-Ghamdi

引用次数: 0

Design of low frequency analog low pass filter using tunable pseudo resistors 采用可调伪电阻的低频模拟低通滤波器的设计

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1007/978-3-642-23508-5_350

N. Neshatvar, H. Al Nashash, L. Albasha

引用次数: 6

Sleep eDiary: A mobile health application for insomnia assessment Sleep eDiary:一个评估失眠的移动健康应用程序

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1109/MECBME.2014.6783260

F. Yousaf, Sana Tmar-Ben Hamida, B. Ahmed

{"title":"Sleep eDiary: A mobile health application for insomnia assessment","authors":"F. Yousaf, Sana Tmar-Ben Hamida, B. Ahmed","doi":"10.1109/MECBME.2014.6783260","DOIUrl":"https://doi.org/10.1109/MECBME.2014.6783260","url":null,"abstract":"Sleep disorders, such as insomnia can seriously affect the individual personality, performance and even lead to psychological problems. The optimal way to obtain an accurate insomnia diagnosis is through polysomnographic (PSG) measurements and face-to-face patients' consultations. Though a number of commercial wearable PSG systems are now available for patients to use in the comfort of their homes they do not incorporate daily subjective reporting essential for effective insomnia diagnosis and treatment. The subjective data are necessary to explore the patient's day-to-day sleep hygiene, as part of the clinician's diagnosis of insomnia. Sleep diaries, in which the patient records information about their sleep patterns, have the ability to allow practical, economical and detailed assessment of insomnia conditions, paving the way for a successful treatment. Smartphones offers a great opportunity to exploit mobile technology to implement electronic versions of these sleep dairies. A mobile application for insomnia treatment needs to meet specific requirements of interface, question relevance and transferring of data. However, existing Android solutions do not meet these three criteria. In this paper, we propose a new sleep diary solution for insomnia assessment and diagnosis. Our application has the advantage of being easy to use, simple and secure. It allows the transfer of recorded data to the clinician, thereby reducing the number of daily visits.","PeriodicalId":384055,"journal":{"name":"2nd Middle East Conference on Biomedical Engineering","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123399684","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: 6

Ultrasound image enhancement using an adaptive anisotropic diffusion filter 利用自适应各向异性扩散滤波器增强超声图像

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.5339/QFARC.2014.HBPP0790

Y. Toufique, R. Cherkaoui El Moursli, L. Masmoudi, A. El kharrim, M. Kaci, S. Allal

引用次数: 12

A study on mechanical strength of pyramid-shaped microneedle 金字塔形微针的机械强度研究

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1109/MECBME.2014.6783200

H. Le-Thanh, N. Tran-Minh, H. L. The, F. Karlsen

引用次数: 4

Receiver coil parameter optimization process for the efficiency of an implantable Inductive Power Transfer system 植入式感应电力传输系统的接收线圈参数优化过程

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1109/MECBME.2014.6783201

Sebastian Rickers, I. R. Navarro, G. Bruck, P. Jung

{"title":"Receiver coil parameter optimization process for the efficiency of an implantable Inductive Power Transfer system","authors":"Sebastian Rickers, I. R. Navarro, G. Bruck, P. Jung","doi":"10.1109/MECBME.2014.6783201","DOIUrl":"https://doi.org/10.1109/MECBME.2014.6783201","url":null,"abstract":"In order to develop a high power transmission efficiency for an Inductive Power Transfer (IPT) system especially the parameters of the receiver (RX) coil have to be analyzed in detail. This becomes essential, when the RX coil is part of a medical implant and dramatically limited in size. The parameters, which completely describe a coil, are its inductance and ohmic losses. Both values are just dependent on a few geometrical and material parameters, i.e. filling factor, diameter of the wire, outer radius, inner radius and length of the coil, as well as the length and the initial permeability of the utilized ferrite rod. This study shows that, the two latter parameters have both to be maximal to reach the highest efficiency of the system. The effect of the remaining parameters on the system efficiency in a predefined parameter's range can be summarized as follows: optimal points for the inner and outer radius as well as for the length of the coil have been found, while for the filling factor an analytical expression has been found to show that it has to be maximized to get the best efficiency. Finally, the wire diameter that was found to be the most critical parameter can be optimized for a given set of parameters by calculating an optimal value for the ohmic losses of the RX coil.","PeriodicalId":384055,"journal":{"name":"2nd Middle East Conference on Biomedical Engineering","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122441993","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

Micro-fibers shape effects on gas exchange in Total Artificial Lung 微纤维形状对全人工肺气体交换的影响

2nd Middle East Conference on Biomedical Engineering Pub Date : 2014-04-07 DOI: 10.1109/MECBME.2014.6783240

A. Qamar, Aditya Guglani, R. Samtaney

引用次数: 0