Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)最新文献_第4页

Modelling of photoplethysmography mobile telemedicine system 光电容积脉搏波移动远程医疗系统建模

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.756510

R. Istepanian, M. Brien, P. Smith, M. Hays, R. Naimimohasses

引用次数: 5

Effects of lift style and dynamics during repetitive lifting 在重复举重过程中，举重方式和动力的影响

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.757054

C. Kuzkaya, J. Boston, T. Rudy, S. Lieber

{"title":"Effects of lift style and dynamics during repetitive lifting","authors":"C. Kuzkaya, J. Boston, T. Rudy, S. Lieber","doi":"10.1109/IEMBS.1997.757054","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.757054","url":null,"abstract":"Proposes that, in a dynamic lifting task, individuals adjust their lifting style to minimize a cost function involving some combination of work performed and forces generated in the spine. This proposal is to be evaluated with data previously obtained in a large experimental study of low-back pain patients before and after treatment. Because of limitations in the data collected for this study, an approximate three-segment model of the body is to be used to estimate the total work performed per lift and the moment generated at the hip, using as inputs the hip and knee angles as functions of time during the lift and the patient's height and weight. Simulation results are presented to illustrate the effects of lift type and dynamics on work and hip moment. The model then is applied to a sample of 15 patients and 15 controls. The results show that controls lift heavier loads than the patients do, but at a cost of incurring higher moments at the hip. Assuming that these moments reflect greater forces in the spine, the results suggest that controls are willing to tolerate greater spinal forces than patients in order to perform efficient lifts.","PeriodicalId":342750,"journal":{"name":"Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)","volume":"83 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114044924","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

Ultrasonic distance detection for a closed-loop spinal cord stimulation system 闭路脊髓刺激系统的超声距离检测

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.758723

E. A. Dijkstra, J. Holsheimer, W. Olthuis, P. Bergveld

引用次数: 9

Contactless measurement of thoracic conductivity changes by magnetic induction 通过磁感应非接触测量胸廓电导率变化

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.756820

R. Guardo, G. Charron, Y. Goussard, P. Savard

{"title":"Contactless measurement of thoracic conductivity changes by magnetic induction","authors":"R. Guardo, G. Charron, Y. Goussard, P. Savard","doi":"10.1109/IEMBS.1997.756820","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.756820","url":null,"abstract":"A noninvasive technique of measuring thoracic conductivity changes caused by respiration and cardiac activity is described. Conductivity is measured with a hand-held sensor comprising a planar coil, a radio-frequency (RF) oscillator and a closed-loop control system to hold constant the amplitude of oscillations. This system automatically compensates for changes in the power dissipated by eddy-currents in the thorax by adjusting the RF current driven into the coil. This results in the control signal being proportional to the conductivity of the thorax. Simulations with a thorax model consisting of four eccentric spheres were used to determine the magnitude of changes for a range of tidal volumes and stroke volumes. The importance of tissue properties, such as lung conductivity and hematocrit was assessed. Finally, an example of signals recorded in-vivo with the sensor is presented. Use of this technique to monitor cardiac output would require a one-time measurement of geometrical data specific to the patient's thorax (e.g. the distance between the heart and the body-surface), in order to transform measured cardiosynchronous conductivity changes into stroke volume.","PeriodicalId":342750,"journal":{"name":"Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114393829","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: 10

Real-time holographic reconstruction of NMR images in Fresnel transform imaging technique 菲涅耳变换成像技术中核磁共振图像的实时全息重建

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.754581

S. Ito, Y. Yamada, Y. Kamimura

引用次数: 1

3D-EEG rhythm mapping during flash stimulation using zero-crossings analysis 使用过零分析在闪电刺激期间绘制3d脑电图节律图

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.757003

M. Nakagawa, H. Tsai, Bin He

{"title":"3D-EEG rhythm mapping during flash stimulation using zero-crossings analysis","authors":"M. Nakagawa, H. Tsai, Bin He","doi":"10.1109/IEMBS.1997.757003","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.757003","url":null,"abstract":"3D-EEG rhythm mapping was performed to study alpha desynchronization using the zero-crossing analysis (ZCA) method. 32-electrode EEGs were recorded from five healthy volunteer subjects ranging from 21 to 36 years old during relaxed eye-closed state with flash-light stimulation (at 1 Hz, 10 Hz and 40 Hz inter-stimulus intervals). These EEG signals were filtered for the alpha band (8.0-14.0 Hz) using a fast Fourier transform-based digital filter. From thresholded zero-crossing points, periodic intervals of the alpha waves were determined and converted to instantaneous frequencies (IFs). The power spectrum of the IF fluctuation plot during a 81.92-second length of recorded EEG was calculated and plotted. From the power spectrum of an IF plot, information regarding the rhythm of the waveforms and of the envelopes, which is not represented in the filtered alpha waveforms alone, can be extracted. The spectrum slope values (SSVs) of the best-fit inclination lines for the frequencies of interest on the power spectrum were determined. Finally, 3D-EEG rhythm mapping displayed the scalp distribution of SSVs to show regions of synchronized or desynchronized alpha activity. We can observe the spatial dynamics of the alpha rhythm during flash stimulation using over-minute recordings. 3D-EEG rhythm mapping is useful in the investigation of cortical structures and the interactions of the underlying rhythmic activity.","PeriodicalId":342750,"journal":{"name":"Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116732731","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: 5

Segmentation of pathology microscopic images 病理显微图像的分割

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.757676

Hui Zhu, H. Chan, F. Lam, K. Y. Lam

引用次数: 2

Accurate 3D pose estimation method for polyethylene wear assessment in total knee replacement 全膝关节置换术中聚乙烯磨损评估的精确三维位姿估计方法

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.757093

Y. Fukuoka, A. Hoshino, A. Ishida

引用次数: 7

Engineering neural networks in vitro: microstamping biomolecules to control cell position 体外工程神经网络:微冲压生物分子控制细胞位置

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.756859

B. Wheeler, D. Branch, J. M. Corey, J. Weyhenmeyer, G. Brewer

引用次数: 1

Modeling RF absorption in the human body 模拟人体对射频的吸收

Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136) Pub Date : 1997-10-30 DOI: 10.1109/IEMBS.1997.756828

M. Stuchly, M. Okoniewski, M. Mrozowski, M. Douglas

引用次数: 1