发布求助
文献互助 智能选刊 最新文献

1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society最新文献

筛选
英文 中文
Respiration related changes of PCG model parameters 呼吸相关PCG模型参数的变化
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761066
A. Baykal, Y. Z. Ider, H. Koymen
{"title":"Respiration related changes of PCG model parameters","authors":"A. Baykal, Y. Z. Ider, H. Koymen","doi":"10.1109/IEMBS.1992.5761066","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761066","url":null,"abstract":"In this study, heart sounds of 10 normal subjects are recorded in three different respiratory states. These signals are analyzed and the changes of model parameters with respiration are studied. As a result, it is observed that the frequency of modes do not vary during respiration while the energy of modes significantly differ between inspiration and expiration. The results of the study are discussed with respect to proposed heart sound generation mechanisms.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"39 1","pages":"473-474"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77680729","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
Classification of bioprosthetic valve closure sounds by a neural network using linear prediction coefficients 利用线性预测系数的神经网络对生物假体瓣膜关闭声进行分类
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761068
Zhenyu Guo, L. Durand, Howard C. Lee, L. Allard, P. Stein
{"title":"Classification of bioprosthetic valve closure sounds by a neural network using linear prediction coefficients","authors":"Zhenyu Guo, L. Durand, Howard C. Lee, L. Allard, P. Stein","doi":"10.1109/IEMBS.1992.5761068","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761068","url":null,"abstract":"A three layers feed-forward back-propagation neural network was trained to classify bioprosthetic valve closure sounds from 47 patients with a porcine bioprosthetic valve inserted in the aortic position. Twenty-four patients had a normal valve and 23 a degenerated one. Twelve linear prediction coefficients computed from the closure sounds were used as the network input The neural network yielded 89% correct classification in an evaluation using the leave-one-out method. This study confirmed the potential of heart sound classification by using a neural network.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"15 1","pages":"477-478"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78181310","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
3-D Modeling by computer simulation of the evolution of normal, metaplastic and dysplastic stages of the nasal epithelium 利用计算机模拟正常、化生和发育不良阶段鼻上皮的三维模型
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5762111
C. Clem, J. Rigaut
{"title":"3-D Modeling by computer simulation of the evolution of normal, metaplastic and dysplastic stages of the nasal epithelium","authors":"C. Clem, J. Rigaut","doi":"10.1109/IEMBS.1992.5762111","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5762111","url":null,"abstract":"Static and dynamic 3-D modeling and visualization of the normal and pathological architecture of the nasal epithelium have been achieved. Positions, sizes, shapes and orientations of the nuclei as well as the basal lamina and the lumen have been used for the 3-D representation of the epithelium. Static modeling, based on an expert system to estimate model parameters, has first been applied to simulate the normal, metaplasic and dysplasic stages of the nasal epithelium. Dynamic modeling, starting from a static representation of a normal or a pathological stage, uses the starting values of the cell proliferation parameters and simulates a tissue growth process.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"35 1","pages":"1942-1943"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80005502","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
Neural damage from continuous microstimulation in the cochlear nucleus; correlation with stimulus parameters 耳蜗核连续微刺激对神经的损伤与刺激参数的相关性
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761847
D. McCreery, T. Yuen, W. Agnew, L. Bullara
{"title":"Neural damage from continuous microstimulation in the cochlear nucleus; correlation with stimulus parameters","authors":"D. McCreery, T. Yuen, W. Agnew, L. Bullara","doi":"10.1109/IEMBS.1992.5761847","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761847","url":null,"abstract":"Seven hours of continuous stimulation in the cochlear nucleus with chronically implanted activated iridium microelectrodes resulted in neural injury characterized primarily by a localized zone of severe extracellular edema accompanied by abnormal cellular elements. The severity of the damage was correlated positively with the stimulus frequency and charge per phase, but a correlation with the geometric charge density was not obvious.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"112 2 1","pages":"1396-1397"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80016867","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
AutoRegulated Inspiratory Support ventilation 自动调节吸气支持通气
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761520
M. Chambrin, C. Chopin, J. Mangalaboyi, K. Hintzen
{"title":"AutoRegulated Inspiratory Support ventilation","authors":"M. Chambrin, C. Chopin, J. Mangalaboyi, K. Hintzen","doi":"10.1109/IEMBS.1992.5761520","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761520","url":null,"abstract":"In order to avoid the inconvenients related to available methods of weaning (risk of hypo and hyperventlation, lung hyperinflation, and necessity to modify settings frequently to meet the patient's needs), we propose a new mode of ventilation whose main characteristics are : controlled tidal volume, decreasing inspiratory flow pattern, zero flow cycled, automatic regulation from spontaneous breathing to volumetric controlled ventilation according to patient's needs. Using a prototype, we have compared this new mode with controlled ventilation. With respect of minute ventilation, we found a significant decrease in peak airway pressure whereas there were no difference in mean airway pressure and blood gas results. This mode has then been implemented in a ventilator","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"9 1","pages":"2419-2420"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80029608","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
Neural network restoration of gamma camera bremsstrahlung images 伽玛相机轫致形变图像的神经网络恢复
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5762044
M. Kallergi, W. Qian, L. Clarke, Huai-Dong Li
{"title":"Neural network restoration of gamma camera bremsstrahlung images","authors":"M. Kallergi, W. Qian, L. Clarke, Huai-Dong Li","doi":"10.1109/IEMBS.1992.5762044","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5762044","url":null,"abstract":"Planar gamma camera Images of spherical phantoms filled with phosphorous-32 (32Ρ) are filtered with a new restoration technique which uses an order-statistic non-linear filter for noise suppression and a neural network for image restoration. The proposed method reduces Image noise effectively while preserving Image content and counts and restores the data consistently with source-to-detector distance or source size resulting in an effective attenuation coefficient for 32P. The new filter is compared to the Wiener filter for restoration in terms of error Images and attenuation measurements.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"25 1","pages":"1795-1796"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80169352","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
Multimodality intracranial angiography: Registration and integration of conventional angiograms and MRA data 多模态颅内血管造影:常规血管造影和MRA数据的注册和整合
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761687
R. Grzeszczuk, N. Alperin, D. Levin, Yue Cao, K. K. Tan, C. Pelizzari
{"title":"Multimodality intracranial angiography: Registration and integration of conventional angiograms and MRA data","authors":"R. Grzeszczuk, N. Alperin, D. Levin, Yue Cao, K. K. Tan, C. Pelizzari","doi":"10.1109/IEMBS.1992.5761687","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761687","url":null,"abstract":"MRA and conventional angiographic data sets are registered in order to produce an integrated 3-D model of intracranial vasculature with high spatial and temporal resolution. The correlation is achieved with help of a 3-D digitizer and a retrospective surface matching program.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"11 1","pages":"2783-2784"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80498358","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
Intra-aortic balloon versus extra-aortic counterpulsation in severe cardiac failure differences in aortic input impedance and left ventricular power generation 主动脉内球囊与主动脉外反搏在严重心力衰竭中的差异:主动脉输入阻抗和左心室能量产生
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761018
J. Zelano, W. Ko, W. Lazenby, O. Isom, K. Krieger
{"title":"Intra-aortic balloon versus extra-aortic counterpulsation in severe cardiac failure differences in aortic input impedance and left ventricular power generation","authors":"J. Zelano, W. Ko, W. Lazenby, O. Isom, K. Krieger","doi":"10.1109/IEMBS.1992.5761018","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761018","url":null,"abstract":"In order to evaluate the efficacy of counterpulsation for different cardiac assist device configurations, a valveless single orifice polyurethane ventricle was implanted on the brachlocephalic artery in sheep(n=14) to provide extra-aortic counterpulsation. In parallel, an intra-aortic balloon was placed in the descending aorta. Both devices were pneumatically driven with a standard intra-aortic balloon pump console at a preload of 40°c. Severe cardiac failure was induced with high dosages of esmolol. Measured parameters were aortic pressure and flow, and left ventricular pressure. Tension-time index, total aortic flow, end diastolic pressure, aortic input impedance, and left ventricular power output were computed. Results indicate that the fundamental components of aortic input impedance and left ventricular power output are reliable predictors of the efficacy of counterpulsation for the experimental model used in this study.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"102 1","pages":"373-374"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80503484","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
A simple method for morpho-analysis of embolization particles 栓塞颗粒形态分析的简单方法
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5762253
L. Domas, A. Laurent, M. Wassef, A. Bailly, J. Merland
{"title":"A simple method for morpho-analysis of embolization particles","authors":"L. Domas, A. Laurent, M. Wassef, A. Bailly, J. Merland","doi":"10.1109/IEMBS.1992.5762253","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5762253","url":null,"abstract":"This work presents an Image processing method applied to morpho-analysis of embolization particles. This method Is used to make measurements necessary to the calculation of an “occluion index” that describes the occlusion Quality of a particle.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"42 1","pages":"2235-2236"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79243436","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
Inexpensive PC-based integrated control systems for severely physically disabled people 为严重肢体残疾者提供廉价的基于个人电脑的综合控制系统
1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Pub Date : 1992-10-01 DOI: 10.1109/IEMBS.1992.5761965
P. Cudd, M. S. Hawley
{"title":"Inexpensive PC-based integrated control systems for severely physically disabled people","authors":"P. Cudd, M. S. Hawley","doi":"10.1109/IEMBS.1992.5761965","DOIUrl":"https://doi.org/10.1109/IEMBS.1992.5761965","url":null,"abstract":"The development of a low cost integrated assistance system based around small/portable IBM compatible personal computers is presented. The system design and issues that affect the current system and those of future systems are discussed.","PeriodicalId":6457,"journal":{"name":"1992 14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society","volume":"211 1","pages":"1648-1649"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79401065","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: 4
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信