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

Measurement of temporal frequency characteristics of VEP using pseudorandom binary sequence and their correlation with cerebral blood flow in human visual cortex 伪随机二值序列测量VEP的时间频率特征及其与人视觉皮层脑血流量的相关性

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 : 1997-12-01 DOI: 10.1109/IEMBS.1997.756998

K. Momose, Y. Kimura, M. Kiyosawa, M. Senda, K. Komiya

{"title":"Measurement of temporal frequency characteristics of VEP using pseudorandom binary sequence and their correlation with cerebral blood flow in human visual cortex","authors":"K. Momose, Y. Kimura, M. Kiyosawa, M. Senda, K. Komiya","doi":"10.1109/IEMBS.1997.756998","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.756998","url":null,"abstract":"Steady-state visual evoked potentials (S-VEP) have been used to derive temporal frequency characteristics, which are effective in detecting sensitivity loss for high-frequency stimuli in early glaucoma. However, this method requires independent measurements of VEPs for various frequencies. In this study, an improved technique using pseudorandom binary sequence (PRBS) stimulation to elicit VEPs (PRBS-VEP) was proposed and compared with the S-VEP. Regional cerebral blood flow (CBF) was also measured with positron emission tomography (PET), and its response to stimulation was compared with the VEP. Results showed that PRBS-VEP yielded temporal frequency characteristics similar to those obtained by S-VEP, but in a much shorter time. Furthermore, CBF response in the primary visual cortex was well correlated with the VEP amplitude, suggesting that VEPs originate in the primary visual cortex.","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":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128099805","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

Time-course analysis of motor unit firing patterns in stroke patients using noninvasive multielectrode electromyography 无创多电极肌电图对脑卒中患者运动单元放电模式的时程分析

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 : 1997-12-01 DOI: 10.1109/IEMBS.1997.756602

T. Sun, Jia-Jin Chen, Thy‐Sheng Lin

引用次数: 0

The design of a DSP based portable physiological signal monitor 基于DSP的便携式生理信号监测仪的设计

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 : 1997-12-01 DOI: 10.1109/IEMBS.1997.756561

Chih-lung Lin, Han-Chang Wu, Kuang-Ching Wang, S. Young, Maw-huei Lee, T. Kuo

引用次数: 1

A microfabricated reactor for cell-free protein synthesis 用于无细胞蛋白质合成的微型反应器

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 : 1997-12-01 DOI: 10.1109/IEMBS.1997.756856

T. Fujii, K. Hosokawa, T. Nojima, S. Shoji, A. Yotsumoto, I. Endo

引用次数: 9

Capillary model of crystal microchannel for red blood cell deformability measurement 用于红细胞变形性测量的晶体微通道毛细管模型

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 : 1997-12-01 DOI: 10.1109/IEMBS.1997.756795

K. Tsukada, E. Sekizuka, C. Oshio, T. Nagai, H. Minamitani

引用次数: 3

Instrumentation and clinical applications in frequency-domain optical mammography 频域光学乳房x线照相术的仪器和临床应用

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 : 1997-12-01 DOI: 10.1109/IEMBS.1997.756898

S. Fantini, K. T. Moesta, Maria-Angela Franceschini, H. Jess, H. Erdl, E. Gratton, P. Schlag, M. Kaschke

{"title":"Instrumentation and clinical applications in frequency-domain optical mammography","authors":"S. Fantini, K. T. Moesta, Maria-Angela Franceschini, H. Jess, H. Erdl, E. Gratton, P. Schlag, M. Kaschke","doi":"10.1109/IEMBS.1997.756898","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.756898","url":null,"abstract":"We describe an instrument for frequency-domain light mammography (LIMA), and we present clinical results obtained on patients affected by breast cancer. This instrument uses two laser diodes emitting at 690 and 825 nm. Their intensities are modulated at a frequency of 110 MHz. The amplitude and the phase of the intensity wave are the measured quantities. The breast is slightly compressed between two glass plates and the optical signal is detected in transmission, i.e. on the opposite side of the illuminated spot of the breast. The acquisition time for a full breast image is about 3 minutes. Edge effects (that are mainly due to the breast thickness variability within the scanned area) are corrected by an algorithm of data analysis which enhances the contrast of the optical mammograms. In the clinical applications, we successfully detected 27 out of 37 malignant tumors (73%). This result shows the practical feasibility and the significant potential of frequency-domain optical mammography.","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":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133518233","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

Early detection of bronchiolitis obliterans syndrome in lung transplant recipients with chronic rejection using home spirometry 应用家庭肺活量测定法早期检测肺移植术后慢性排斥反应的闭塞性细支气管炎综合征

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 : 1997-12-01 DOI: 10.1109/IEMBS.1997.756533

S. M. Finkelstein, Marshall I. Hertz, M. Snyder, C. E. Stibbe, N. Sabati, Bruce R. Lindgren, Pradyumna Dutta, T. Killoren, J. Slagle

{"title":"Early detection of bronchiolitis obliterans syndrome in lung transplant recipients with chronic rejection using home spirometry","authors":"S. M. Finkelstein, Marshall I. Hertz, M. Snyder, C. E. Stibbe, N. Sabati, Bruce R. Lindgren, Pradyumna Dutta, T. Killoren, J. Slagle","doi":"10.1109/IEMBS.1997.756533","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.756533","url":null,"abstract":"Declining pulmonary function, as measured by staging for bronchiolitis obliterans syndrome, is considered primary indication of future chronic rejection in transplanted lungs. Staging has been evaluated in a group of transplant recipients using a paperless, electronic spirometer/diary instrument for home monitoring. Eleven of 104 lung recipients were diagnosed with chronic rejection. Seven of these subjects had performed home monitoring for a minimum of 8 months at the time of this study. Clinic and home spirometry variables were used in the staging algorithm to determine the onset and rate of clinical decline related to the rejection. Using home spirometry, the onset of decline began an average of 284 days before diagnosis of chronic rejection, which was significantly earlier (p<0.05) than the decline observed with clinic pulmonary function testing. Staging changes based on home spirometry preceded diagnosis of chronic rejection in all subjects, but only occurred in 4 of 7 subjects using clinic testing. Home spirometry can provide early and consistent indication of pulmonary decline prior to chronic rejection, and should be considered as a future component of post-transplant follow-up care.","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":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132621310","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

Late potential analysis in Chagas disease using the vector spectral combination of orthogonal leads 利用正交导联的矢量谱组合分析恰加斯病的后期电位

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 : 1997-11-15 DOI: 10.1109/IEMBS.1997.754468

R. Bravo, O. Escalona, F. Mora, G. Passariello

{"title":"Late potential analysis in Chagas disease using the vector spectral combination of orthogonal leads","authors":"R. Bravo, O. Escalona, F. Mora, G. Passariello","doi":"10.1109/IEMBS.1997.754468","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.754468","url":null,"abstract":"Chagas disease is a major public health problem in South American countries, in the Venezuelan case, the heart is the mainly affected organ. The parasite that produces the disease invades the myocardium, causes muscle and conduction system degeneration, leading to abnormal ventricular contractility and conduction. Late potential (LP) analysis can detect abnormal electric behavior of the ventricles, which has been correlated with the presence of ventricular tachycardia episodes. Time domain methods for LP analysis are widely used but they are affected by other cardiac pathologies, i.e., branch blocks (BE), which are found simultaneously with abnormal ventricular conduction phenomena in chagasic patients. The use of an orthogonal lead vectorspectral combination using the Hartley transform has demonstrated to be a simple frequency domain method for the interpretation of abnormal ventricular potentials. This work uses the latter approach for LP analysis of high resolution ECG (HRECG) records of chagasic patients. The vectorspectral magnitude (S) was computed as the sum of the DHT spectra components of the XYZ leads in the frequency bands of 60 to 300 Hz and -300 to -60 Hz, for each chagasic patient group and a healthy subject control group in a time window at the end of QRS. Results showed that S is significantly lower in healthy subjects (63.5/spl plusmn/23.8 /spl mu/V) than in chagasic patients with abnormal electrocardiogram (89.2/spl plusmn/43.7 /spl mu/V), p<0.05. The vector spectral analysis is a simple frequency domain method for LP study, the results showed that the method can detect positive patients with generalized myocardial disease.","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":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121718020","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

Quantitative assessment of behavior in dementia patients by continuous physical activity monitoring 通过持续身体活动监测对痴呆患者行为进行定量评估

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.1997.756513

T. Tamura, T. Fujimoto, T. Togawa

{"title":"Quantitative assessment of behavior in dementia patients by continuous physical activity monitoring","authors":"T. Tamura, T. Fujimoto, T. Togawa","doi":"10.1109/IEMBS.1997.756513","DOIUrl":"https://doi.org/10.1109/IEMBS.1997.756513","url":null,"abstract":"The aim of this study was to examine the quantitative relationship between physical activity and heart rate in dementia patients. Acceleration at the waist, wrist and ankle and ECGs were measured by an ambulatory monitor. At the same time as these measurements subject records were noted by a psychotherapist. Fourteen late stage dementia patients and fifteen normal elderly performed daily activity between 10 am and 4 pm. Changes in heart rate were associated with changes in acceleration in both groups, but intermittent activity changes were observed in dementia patients. The mean acceleration frequency and amplitude in the dementia group were significantly lower than those in normal elderly subjects. There was no correlation between the severity of intellectual deterioration and the degree of behavior disintegration in dementia patients. The elderly shifted smoothly between activities. The dementia patients showed sudden fluctuations of activity. The ambulatory monitor is an effective method for the quantitative assessment of dementia patients.","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":"35 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":"115146398","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: 8

A portable battery operated bone fracture evaluator 一种便携式电池供电的骨折评估器

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.1997.758810

K. Singh, V. Singh

引用次数: 3