Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286)最新文献

Visual simulation on ligament's stress derived from the microstructural model 基于微结构模型的韧带应力视觉模拟

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.744940

S. Hirokawa, R. Tsuruno

引用次数: 1

Reflex and intrinsic mechanical changes in spastic limbs of MS patients 多发性硬化症患者肢体痉挛的反射和内在力学变化

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.744755

Li-Qun Zhang, Guangzhi Wang, J. Sliwa, W. Zev Rymer

{"title":"Reflex and intrinsic mechanical changes in spastic limbs of MS patients","authors":"Li-Qun Zhang, Guangzhi Wang, J. Sliwa, W. Zev Rymer","doi":"10.1109/IEMBS.1998.744755","DOIUrl":"https://doi.org/10.1109/IEMBS.1998.744755","url":null,"abstract":"Reflex and intrinsic properties of the human knee joint-muscles were studied in vivo in seven spastic multiple sclerosis (MS) patients and ten normal subjects. A powerful joint driving device was used to perturb the knee joint in precisely controlled patterns to manifest both reflex and intrinsic properties. A digital signal processor controlled the device and used a small-amplitude and band-limited white-noise sequence as the command trajectory. The subject was asked to maintain a steady level of background muscle contraction during each perturbation trial. A nonlinear delay differential equation model was used to characterize the reflex and intrinsic properties of the knee joint in terms of the dynamic stretch reflex gains for stretching and shortening muscles, static stretch reflex gain, joint stiffness, viscosity, and leg inertia. The authors' findings were that spastic MS patients showed significantly lower joint viscosity and static stretch reflex gain than their counterparts in normal controls. On the other hand, the dynamic stretch reflex gains and joint stiffness of the spastic MS patients were higher than those of normal controls.","PeriodicalId":156581,"journal":{"name":"Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128468250","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

Dynamics of patellar tendon reflex in spastic multiple sclerosis patients 痉挛性多发性硬化症患者髌骨肌腱反射动力学

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.744751

Li-Qun Zhang, Guangzhi Wang, J. Sliwa, W. Rymer

{"title":"Dynamics of patellar tendon reflex in spastic multiple sclerosis patients","authors":"Li-Qun Zhang, Guangzhi Wang, J. Sliwa, W. Rymer","doi":"10.1109/IEMBS.1998.744751","DOIUrl":"https://doi.org/10.1109/IEMBS.1998.744751","url":null,"abstract":"Patellar tendon reflexes were studied in fourteen normal subjects and ten multiple sclerosis (MS) patients. An instrumented hammer was used to tap the patellar tendon and record the tapping force, while the quadriceps EMG and knee extension torque were recorded isometrically as the reflex responses. The relationship between tapping force and reflex torque was characterized using several system measures: the tendon reflex gain (G/sub tr/), contraction rate (R/sub c/), half-relaxation rate (R/sub hr/), contraction time (t/sub c/), half-relaxation time (t/sub hr/), and reflex loop delay (t/sub d/). G/sub tr/, R/sub c/, and R/sub hr/ of the MS patients were significantly higher than their counterparts in normal controls (p<0.001 for all cases). t/sub d/ of the MS patients was significantly shorter than that of the normal group (p<0.005). G/sub tr/, R/sub c/, and R/sub hr/ values correlated more closely with clinical measures of spasticity (Ashworth scale and tendon reflex scale) than did pure output measures (peak reflex torque and quadriceps EMG signals). Tendon reflexes were more repeatable in the MS population than in normal controls. The higher correlation to clinical measures and lower variation of G/sub tr/, R/sub c/, and R/sub hr/ indicate the potential values of these dynamic system measures in clinical practice as a more accurate and consistent approach towards quantification of the tendon jerk and spasticity.","PeriodicalId":156581,"journal":{"name":"Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126122059","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

Development of a miniaturized IV drip rate meter using optical sensors and fuzzy rule based detection algorithm 基于光学传感器和模糊规则检测算法的小型化静脉滴注率计的研制

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.746937

Y. Yang, H.C. Kim

引用次数: 16

A speech controlled artificial limb based on DSP chip 一种基于DSP芯片的语音控制假肢

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.745232

Chih-lung Lin, Shao-Cheng Wang, Hen-Chong Wu, S. Young, Maw-huei Lee, T. Kuo

引用次数: 10

Indocyanine green enhanced diode laser ablation for porcine gastric wall with ablation depth monitoring using scattering light 用散射光监测吲哚菁绿增强二极管激光消融猪胃壁的深度

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.746968

T. Arai, T. Hayashi, N. Nakamura, S. Hino, M. Kikuchi, S. Miura, H. Suzuki, H. Tajiri

{"title":"Indocyanine green enhanced diode laser ablation for porcine gastric wall with ablation depth monitoring using scattering light","authors":"T. Arai, T. Hayashi, N. Nakamura, S. Hino, M. Kikuchi, S. Miura, H. Suzuki, H. Tajiri","doi":"10.1109/IEMBS.1998.746968","DOIUrl":"https://doi.org/10.1109/IEMBS.1998.746968","url":null,"abstract":"We developed laser ablation depth monitoring using scattering light on indocyanine green (ICG) enhanced diode laser ablation for gastric wall. We have developed selective diode laser ablation for ICG stained submucosa to treat submucosal gastric cancer. To prevent gastric perforation, real-time ablation depth monitoring should be applied to this treatment even though the ablation depth can be roughly judged through gastric endoscope by ablation surface color change. The backscattered light spectrum of the diode laser from the ablation area may be influenced by surface absorption and plume absorption. We observed the scattering light spectrum and found a small spectral dip at the ICG absorption wavelength. We demonstrated that this dip depth corresponded to the remained ICG stained submucosal layer thickness. We concluded that simple spectral monitoring may be effective to prevent gastric perforation during ICG enhanced diode laser ablation therapy.","PeriodicalId":156581,"journal":{"name":"Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127209343","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

Influence of adipose tissue on near infrared oxygenation monitoring in muscle 脂肪组织对肌肉近红外氧合监测的影响

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.746957

K. Matsushita, E. Okada

引用次数: 4

An adaptive cradle for the neonatal growth 适合新生儿生长的摇篮

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.746939

C. Luo, C. Lu, Y. Chen, T. Yeh

引用次数: 2

Ultrasound elastography of articular cartilage: a preliminary study 关节软骨超声弹性成像的初步研究

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.746979

Y. Zheng, A. Mak, L. Qin, C.X. Ding

引用次数: 10

Closed-loop stimulations of hypoglossal nerve using its spontaneous activity as the feedback signal 利用舌下神经的自发活动作为反馈信号进行闭环刺激

Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286) Pub Date : 1998-12-01 DOI: 10.1109/IEMBS.1998.744962

M. Sahin, D. Durand

{"title":"Closed-loop stimulations of hypoglossal nerve using its spontaneous activity as the feedback signal","authors":"M. Sahin, D. Durand","doi":"10.1109/IEMBS.1998.744962","DOIUrl":"https://doi.org/10.1109/IEMBS.1998.744962","url":null,"abstract":"Electrical recruitment of the upper airway (UAW) muscles has been attempted as a treatment method for Obstructive Sleep Apnea (OSA). Hypoglossal nerve (HG) and genioglossus muscle (GG) stimulations have given successful results in OSA patients. A reliable method for detection of obstructions is needed to trigger the stimulations in phase with respiration during obstructive breaths before this technique can be used clinically. Here, the authors investigate the possibility of closed-loop HG nerve stimulations using its spontaneous activity for detection of obstructions in a dog model. The activity of the HG nerve is recorded with chronically implanted nerve cuff electrodes in sleeping dogs while a force is being applied onto the submental region to collapse the airways. The increase in the phasic HG activity as a response to the submental force is used to trigger the stimulations. Closed-loop stimulations are shown to relieve the UAWs from the collapsing effect of the submental force.","PeriodicalId":156581,"journal":{"name":"Proceedings of the 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Vol.20 Biomedical Engineering Towards the Year 2000 and Beyond (Cat. No.98CH36286)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126163018","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