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Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ最新文献

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Simulation of activation and propagation delay during tripolar neural stimulation 三极神经刺激过程中激活和传播延迟的模拟
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-16 DOI: 10.1109/IEMBS.1993.979095
E. Goodall, L. M. Kosterman, J. Struijk, J. Holsheimer
{"title":"Simulation of activation and propagation delay during tripolar neural stimulation","authors":"E. Goodall, L. M. Kosterman, J. Struijk, J. Holsheimer","doi":"10.1109/IEMBS.1993.979095","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.979095","url":null,"abstract":"Computer simulations were perfonned to investigate the influence of stimulus amplitude on cathodal activation delay, propagation delay and blocking during stimulation with a bipolar cuff electrode. Activation and propagation delays were combined in a total delay term which was minimized between the excitation and blocking thresholds.","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"188 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124154931","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
Calculation of the potential field in nerve stimulation using a multigrid method 用多重网格法计算神经刺激电位场
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-16 DOI: 10.1109/IEMBS.1993.979093
R. Hoekema, J. Struijk, C. Venner, E. Goodall, J. Holsheimer
{"title":"Calculation of the potential field in nerve stimulation using a multigrid method","authors":"R. Hoekema, J. Struijk, C. Venner, E. Goodall, J. Holsheimer","doi":"10.1109/IEMBS.1993.979093","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.979093","url":null,"abstract":"This paper deals with the first step in the modeling of newe stimulation: the calculation of the potential field in a 3D volume conductor model of the nerve. surroundings and electrodes. Because of its time efficiency, a multigrid method was used to calculate the field. Compared to a Gauss-Seidel relaxation (overrelaxation factor = 1.7), a calculation time reduction of a factor 20 was obtained","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130508792","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
Relationship between perception threshold and thickness of the dorsal CSF-layer in epidural spinal cord stimulation 硬膜外脊髓刺激中知觉阈值与背侧csf层厚度的关系
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-16 DOI: 10.1109/IEMBS.1993.979094
J. Hoisheimer, N. Tas, J. He, J. A. den Boer, J. Struijk, R. Hokema, G. Barolat, A.R. Romeboom
{"title":"Relationship between perception threshold and thickness of the dorsal CSF-layer in epidural spinal cord stimulation","authors":"J. Hoisheimer, N. Tas, J. He, J. A. den Boer, J. Struijk, R. Hokema, G. Barolat, A.R. Romeboom","doi":"10.1109/IEMBS.1993.979094","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.979094","url":null,"abstract":"","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114875715","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
Influence of light irradiation an the development of mouse eggs in culture 光照对培养小鼠卵发育的影响
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-01 DOI: 10.1109/IEMBS.1993.979316
H. Itoh, N. Makimura, T. Arai, H. Tsubamoto, K. Furuya, M. Kikuchi, I. Nagata
{"title":"Influence of light irradiation an the development of mouse eggs in culture","authors":"H. Itoh, N. Makimura, T. Arai, H. Tsubamoto, K. Furuya, M. Kikuchi, I. Nagata","doi":"10.1109/IEMBS.1993.979316","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.979316","url":null,"abstract":"We tnvestlgated the Influence of l lght envlronment on the development of mouse egg in virro. The 1-cell mouse eggs were irradlated by varlous laser l ights of whlch wavelengths were 632.8nm, 543nm, and 442nm in vitro. Actual llght environment by means of the microscope IIght source In IVFET ( in vitro fertlllzatlon-embryo transfer) was measured to set the I lght dose In th is experlment. Mouse eggs were cultured to observe cellular development stage. In case of 632.8nm radiation of 500kJ/m2 I n dose ( 2 0 t lmes larger than actual l lght envlronment), 97% of eggs stopped their division. In the case of 543nm and 442nm radiations no influences were observed In egg division. These results suggested that l lght environment migh t af fect o n the development of mouse egg in vitro.","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123063061","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
Fluorinated hydrocarbons as MRI contrast agents 氟化碳氢化合物作为MRI造影剂
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-01 DOI: 10.1109/IEMBS.1993.978494
M. Grinstaff, N. Desai, K. Kolbeck, R. Magin, K. Suslick, A. Webb, L. Wilmes, M. Wong
{"title":"Fluorinated hydrocarbons as MRI contrast agents","authors":"M. Grinstaff, N. Desai, K. Kolbeck, R. Magin, K. Suslick, A. Webb, L. Wilmes, M. Wong","doi":"10.1109/IEMBS.1993.978494","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.978494","url":null,"abstract":"MRI contrast agents have been widely used to enhance tumor \u0000detection and improve tumor image quality. Particulate MRI contrast agents using conventional proton magnetic resonance imaging have met with limited success. Herein, we report a process to microencapsulate fluorinated hydrocarbons in a biocompatible protein shell and their efficacy as contrast agents for fluorine magnetic resonance imaging (^(19)F MRI).","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":" 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120829727","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
New laser coronary angioplasty system using manipulatable angioscope and co laser with infrared glass fiber 新型激光冠状动脉成形术系统采用可操纵血管镜和红外玻璃纤维激光
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-01 DOI: 10.1109/IEMBS.1993.979307
T. Arai, K. Mizuno, M. Kikuchi, M. Sakurada, A. Miyamoto, A. Kurita, H. Nakarnura, A. Utsumi, M. Katoh, K. Takeuchi
{"title":"New laser coronary angioplasty system using manipulatable angioscope and co laser with infrared glass fiber","authors":"T. Arai, K. Mizuno, M. Kikuchi, M. Sakurada, A. Miyamoto, A. Kurita, H. Nakarnura, A. Utsumi, M. Katoh, K. Takeuchi","doi":"10.1109/IEMBS.1993.979307","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.979307","url":null,"abstract":"A new laser coronary angloplasty system using CO laser and a manipulatable angloscope was described. CO laser was employed as therapy laser due t o its strong vaporization capabi l i ty and f lex ib le f iber dellvery characteristics. The medical CO laser equipment wh ich emi t ted 5um in w a v e l e n g t h w a s d e v e l o p e d . The manipulatable angioscope catheter of which dlmenslons were 1.8 m m In dlameter and 0.9 m in length realized precise targeting of laser irradlation and intraluminal diagnosis. The cont ro l sys tem prevented fa i lu re laser irradiation, and fiber thermal destructlon.","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124651444","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
A measurement technique of surgically exposed tissue by ultrasound 一种通过超声测量手术暴露组织的技术
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-01 DOI: 10.1109/IEMBS.1993.978504
K. Soetanto, S.H. Wang, T. Sugimoto, M. Okujima
{"title":"A measurement technique of surgically exposed tissue by ultrasound","authors":"K. Soetanto, S.H. Wang, T. Sugimoto, M. Okujima","doi":"10.1109/IEMBS.1993.978504","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.978504","url":null,"abstract":"Measuring tissue properties in-vivo is highly desirable to obviate concerns for changes of tissue properties following blood stains and coagulation, autolysis, temperawe change, or fixation. Characterization of surgically exposed tissues by ultrasound is an extremely important research area. A close correlation between tissue pathology and acoustic parameters, including sound speed, attenuation and backscatter coefficients and Uieir frequency dependencies would significantly enhance ultxasonic tissue characterization research and would be valuable for quantitative interpretation of diagnostic ultrasound images. Physicians could be assisted in diagnosis, treatment planning, and following progression and regression of diseases. We proposed a novel design for PVDF transducers in which ultrasound transducers are fabricated at the tips of calipers (analog and digital) as miniprobe. Measurement techniques for this purpose are suggested. Feasibility of this miniprobe has been verified using measurement of phantoms and mammalian tissues.","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128525700","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
Regularized iterative image restoration algorithms applied to autoradiography 正则化迭代图像恢复算法在放射自成像中的应用
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-01 DOI: 10.1109/IEMBS.1993.978652
J. Goyette, G. Lapin, M. Kang, A. Katsaggelos
{"title":"Regularized iterative image restoration algorithms applied to autoradiography","authors":"J. Goyette, G. Lapin, M. Kang, A. Katsaggelos","doi":"10.1109/IEMBS.1993.978652","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.978652","url":null,"abstract":"In this paper the point spread function of autoradiography is experimentally measured and used with digital image restoration techniques to improve the resolution of autoradiographs. We compare two regularized iterative image restoration algorithms applied to autoradiography. A nonlinear filter is used for the removal of f i l m grain noise prior to restoration. Our results indicate a 23% improvement in resolution.","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133662214","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
Medical imaging over a network of heterogenous X-servers 异构x服务器网络上的医学成像
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-01 DOI: 10.1109/IEMBS.1993.979000
D. J. Foran, D. Winkelmann, R. Trelstad
{"title":"Medical imaging over a network of heterogenous X-servers","authors":"D. J. Foran, D. Winkelmann, R. Trelstad","doi":"10.1109/IEMBS.1993.979000","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.979000","url":null,"abstract":"","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"264 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132436772","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
Study of echocardiogram for myocardial infarction using neural networks 应用神经网络诊断心肌梗死的超声心动图研究
Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ Pub Date : 1993-12-01 DOI: 10.1109/IEMBS.1993.978530
Cheng Yi, E. Micheli-Tzanakou, D. Shindler, J. Kostis
{"title":"Study of echocardiogram for myocardial infarction using neural networks","authors":"Cheng Yi, E. Micheli-Tzanakou, D. Shindler, J. Kostis","doi":"10.1109/IEMBS.1993.978530","DOIUrl":"https://doi.org/10.1109/IEMBS.1993.978530","url":null,"abstract":"Ultrasonic myocardial echocardiogram is a promising approach to diagnosing myocardial infarctioni'l. We digitize echocardiographic images to study ultrasound backscatter for scar tissue detection. Neural network analysis is a successful approach to scar detection121. We improve the structure of multi-layer perceptton combined with the feedback optimization algorithm ALOPEX to make it more general and we also introduce the noisy train-","PeriodicalId":408657,"journal":{"name":"Proceedings of the 15th Annual International Conference of the IEEE Engineering in Medicine and Biology Societ","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132584526","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
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