IEEE Transactions on Biomedical Engineering

Issue 11 • Nov. 1981

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Displaying Results 1 - 17 of 17
  • IEEE Transactions on Biomedical Engineering - Table of contents

    Publication Year: 1981, Page(s): c1
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  • IEEE Engineering in Medicine and Biology Society

    Publication Year: 1981, Page(s): c2
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  • Instantaneous Frequency, Mean Frequency, and Variance of Mean Frequency Estimators for Ultrasonic Blood Velocity Doppler Signals

    Publication Year: 1981, Page(s):733 - 741
    Cited by:  Papers (47)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1165 KB)

    The relationship between the instantaneous frequency and the mean frequency of ultrasonic Doppler signals in blood velocity measurements is discussed. The probability distribution density for the instantaneous frequency is calculated. The time interval histogram (TIH), which has been used to characterize the Doppler signal, is found to be an approximation of this probability density. The probabili... View full abstract»

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  • The Effects of Torso Geometry on Magnetocardiographic Lead Fields

    Publication Year: 1981, Page(s):742 - 749
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1712 KB)

    A study of the effects of the torso on the sensitivity of magnetocardiograms (MCG's) is performed; comparisons with the effects on electrocardiograms (ECG's) are made. The effects are determined by comparing MCG or ECG lead fields (LF's) in a realistically shaped computer model of the human torso with the LF's that the same MCG or ECG measurements have when made on a semi-infinite volume conductor... View full abstract»

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  • Sensitivity of Breath-to-Breath Gas Exchange Measurements to Expiratory Flow Errors

    Publication Year: 1981, Page(s):749 - 754
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2554 KB)

    During expiration, fluctuations in gas composition, water vapor, and temperature result in flowmeter errors when the flowmeter is calibrated for a given ambient inspiratory gas. In this paper, we indicate that alternative analytical methods of caleulating breath-to-breath gas exchange exhibit differing sensitivities to this error. A theoretical sensitivity analysis is verified by O2 consumption re... View full abstract»

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  • An Objective Method to Identify Inhomogeneity in Washout Curves

    Publication Year: 1981, Page(s):755 - 760
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2497 KB)

    A statistical screening test has been developed for processing washout data to choose the best model for these data. A choice is made between a linear single-compartment model and nonlinear multi-compartment model. The screen is expressed as a test of a null hypothesis Ho, using a likelihood ratio test. View full abstract»

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  • A μP-Controlled Sliding Integrating-Type Differentiator for Biomedical Signal Processing: Application to dc Ocular Rheography

    Publication Year: 1981, Page(s):761 - 766
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2234 KB)

    This paper describes a measurement technique for precise evaluation of hematic ocular flow. The main characteristics and advantages of the proposed technique over conventional approaches are first pointed out. Next, the design criteria and the performance achievable with the prototype instrument developed to carry out the measurement completely automatically, are examined in detail. The instrument... View full abstract»

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  • The Use of Laguerre Functions for Parameter Identification in a Distributed Biological System

    Publication Year: 1981, Page(s):767 - 775
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3984 KB)

    A new identification algorithm for a class of distributed parameter systems is suggested. The model dealt with describes the passage through the microvascular bed of the liver of a radioactive tracer, initially equilibrated between red cells and plasma. Its purpose is to obtain information on the quantitative measure of permeabilities of the red cell membrane and liver cell surfaces facing the cap... View full abstract»

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  • A Microcomputer-Based Neuromuscular Blockade Monitor

    Publication Year: 1981, Page(s):775 - 783
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3884 KB)

    A portable device has been developed and tested for monitoring the effects of neuromuscular blocking drugs. It incorporates a nerve stimulator, force transducer, and microcomputer for quantitating the level of neuromuscular block. The nerve stimulator, under microcomputer control, is capable of delivering single shocks at 0.1 Hz, train-of-four stimulation at 2 Hz, and tetanic stimulation at 30, 10... View full abstract»

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  • Digital Spectrum Analysis of Respiratory Sound

    Publication Year: 1981, Page(s):784 - 788
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (740 KB)

    The applcation of the fast Fourier transform in the digital analysis of various biological signals in the frequency domain is well-known. In this paper a method is described for spectrum analysis of respiratory sound using the technique of fast Fourier transform. Results of the application of the method to respiratory sounds of six normal subjects and six tuberculosis patients are presented. Such ... View full abstract»

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  • The Measurement of Fetal Movement Using a Strain-Gauge Transducer

    Publication Year: 1981, Page(s):788 - 790
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (646 KB)

    Strain-gauge transducers are a simple and safe means of measuring fetal movement. The transducers do, however, respond to all abdominal movement and thus the measuring instrument must discriminate between maternal and fetal movements. The discrimination may be achieved by choosing an appropriate size for the transducer and also by using an adaptive filter. The success of the adaptive filter is ill... View full abstract»

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  • Walsh Versus Fourier Estimators of the EEG Power Spectrum

    Publication Year: 1981, Page(s):790 - 793
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (810 KB)

    Walsh-based discrete algorithms offer a fast, simple alternative to Fourier methods for estimating EEG power spectra, but their performance has been criticized. Previous comparisons of Fourier and Walsh estimators are reexamined, and they are compared experimentally, on simulated EEG. The evidence suggests that they should perform comparably for EEG monitoring. View full abstract»

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  • The Biomedical Engineering Society Annual Meeting

    Publication Year: 1981, Page(s): 793a
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  • Call for Papers First Southern Biomedical Engineering Conference

    Publication Year: 1981, Page(s): 793-b
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  • Now is the best time to join our Society

    Publication Year: 1981, Page(s): 793-c
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  • IEEE Transactions on Biomedical Engineering Statement of Editorial Policy

    Publication Year: 1981, Page(s): 793-d
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  • Institutional listings

    Publication Year: 1981, Page(s): 793e
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Aims & Scope

IEEE Transactions on Biomedical Engineering contains basic and applied papers dealing with biomedical engineering. Papers range from engineering development in methods and techniques with biomedical applications to experimental and clinical investigations with engineering contributions.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Bin He
University of Minnesota