By Topic

[1992] Proceedings Fifth Annual IEEE Symposium on Computer-Based Medical Systems

14-17 June 1992

Filter Results

Displaying Results 1 - 25 of 87
  • Proceedings. Fifth Annual IEEE Symposium on Computer-Based Medical Systems (Cat. No.92CH3117-9)

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (18 KB)
    Freely Available from IEEE
  • A comparison of swallowing in three subjects using an interactive image processing system

    Publication Year: 1992, Page(s):115 - 122
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Using an interactive computer imaging processing system, three male subjects' liquid swallows are compared. The subjects are a 32-year-old diagnosed with amyotrophic lateral sclerosis, also known as Lou Gehrig's Disease, a 24-year-old normal and a 71-year-old normal. This study examines aspects of tongue and hyoid bone movement and upper esophageal sphincter opening during swallowing. Trajectories... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A dynamic student model in a cardiovascular intelligent tutoring system

    Publication Year: 1992, Page(s):370 - 377
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Negative feedback in the human cardiovascular system is a domain that is rich in both declarative and procedural knowledge. The author outlines the design of a student model for that domain which contains both an overlay model and a bug library. The CIRCSIM-Tutor student modeler's strategy is to determine the most severe student problems as soon as possible. CIRCSIM-Tutor's objectives are limited.... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Shape analysis of mammographic calcifications

    Publication Year: 1992, Page(s):123 - 128
    Cited by:  Papers (9)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    A set of shape factors has been developed to measure the roughness of regions of calcifications in mammograms, to aid in their classification as malignant or benign. The analysis of mammograms is performed in three stages. First, a region growing technique is used to obtain the contours of regions including calcifications. Then, measures of shape features, such as compactness, moments, and Fourier... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intensive-Help-a knowledge-based system for intensive care units

    Publication Year: 1992, Page(s):335 - 344
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    Consideration is given to Intensive-Help (IH), a knowledge-based system which combines the power of an expert system, a database, and a real-time system to provide a full-scale support for intensive care, ranging from documentation to therapy suggestions. The authors describe the problem domain, the overall open system structure, the knowledge base structure, which is based on a multi-agent archit... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Methodology for establishing a `gold standard' [for a medical expert system]

    Publication Year: 1992, Page(s):378 - 382
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Presents a statistical method for establishing a consensus diagnosis among several experts, which is the common `gold standard' used for evaluating the diagnostic performance of a medical expert system. This method involves the use of the extended kappa statistic developed by J.L. Fleiss (1971) and R.J. Light (1971) in the social sciences for the study of a similar problem. The method is carried o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Data modeling and design of a patient data management system in an intensive care unit

    Publication Year: 1992, Page(s):54 - 63
    Cited by:  Papers (1)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    A patient data management system (PDMS) is being developed for use in intensive care units of the Montreal Children's Hospital. The PDMS has a diversity of applications that handle various types of data. The numerous functionalities and management of different data types present the following design requirements: abstract definition of data types; unified view of data during the development phase;... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Identification and evaluation of the security requirements in medical applications

    Publication Year: 1992, Page(s):129 - 137
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    The author summarizes the security aspects of today's medical information systems and evaluates the software security requirements necessary for the computerized systems of tomorrow. She then discusses how these concerns are addressed by today's technology. Particular emphasis is placed on the security gaps in today's technology View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Adaptive abstraction in expert systems for medical diagnosis

    Publication Year: 1992, Page(s):345 - 352
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Preliminary research on applying a novel control scheme to a medical expert system is presented. The solution of most diagnosis problems requires reasoning at multiple abstraction levels. Adaptive abstraction (AA) is a control scheme that enables an expert system to switch automatically to an appropriate level of abstraction to solve the task at hand. The overall knowledge organization, the contro... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Automated corneal endothelial cell analysis

    Publication Year: 1992, Page(s):450 - 457
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Corneal endothelial cell images taken by a noncontact specular microscope usually have a strong gray-scale gradient and flare that make automated analysis very difficult. The development is reported of an automated analysis system of the noncontact specular image, using a specially variant contrast enhancement to remove these obstacles from the original image. The results obtained by the system ar... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Integrated computerized database and radiographic image analysis system for total knee and hip replacement

    Publication Year: 1992, Page(s):383 - 390
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    An integrated computerized database and radiographic image analysis system for total knee and hip replacement is currently under development at the University of Texas Medical School. Measurements are made rapidly and accurately for a wide variety of prostheses. The results are automatically stored in a database for statistical comparisons. The system will prove valuable in postoperative care. How... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A control philosophy for prosthetic hands

    Publication Year: 1992, Page(s):429 - 437
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    The majority of prosthetic hands available today make no pretense of approaching the versatility and functionality of the human hand. Available prostheses generally possess only one degree of freedom, which greatly reduces the manipulative ability of the device. Additional degrees of freedom are rarely added, because of the difficulty in controlling them naturally. The authors have developed a con... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Elements of successful design

    Publication Year: 1992, Page(s):402 - 411
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    Outlines some general principles and methods for developing successful instrumentation. Successful design involves interdependent elements (presentation, ease of use, and intuitiveness) shaped by the designer and the user. These elements evolve through rapid prototyping into a mature, cohesive design. Rapid prototyping requires the cooperation of the designer and user to fuel the successful evolut... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A comprehensive abstraction tool for the out-patient setting

    Publication Year: 1992, Page(s):64 - 73
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    The authors describe a tool which facilitates the abstraction of clinical information in order to allow a comprehensive electronic clinical database to be built. Through the use of an effective CASE (computer-aided software engineering) tool and careful design of the GUI (graphical user interface), a software tool called ABSTRACT was developed in parallel with an extensive ambulatory data dictiona... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Stereotactic surgical planning using three dimensional reconstruction and artificial neural networks

    Publication Year: 1992, Page(s):612 - 615
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Recent research into different artificial neural network structures and topologies suggests the possibility of implementing a particular application. The goal is for the neural network to represent the input function in a natural manner. The authors describe such an implementation in the field of neurosurgical planning, where a set of neural networks represents the lesion to be treated as well as ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Medical diagnostic expert systems: performance vs. representation

    Publication Year: 1992, Page(s):562 - 571
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    A research effort is described which represents an inquiry into an important problem of automated acquisition, indexing, retrieval, and effective use of knowledge in diagnostic tasks. The principal tool is INC2, an incremental concept formation system which automates both the design and the use of diagnostic decision-support systems by a novice. The system's prediction performance is evaluated in ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Simulated annealing and iterated conditional modes with selective and confidence enhanced update schemes

    Publication Year: 1992, Page(s):257 - 264
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    Proposes a selective update scheme for both SA (simulated annealing) and ICMs (iterated conditional modes) which only visits sites within inhomogeneous neighborhoods. A second scheme is proposed to enhance the update confidence at each site by incorporating contextual information in terms of neighbor label class probability distributions, instead of their current realizations. The two update schem... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An intelligent controller for neurophysiological experiments

    Publication Year: 1992, Page(s):528 - 537
    Cited by:  Patents (79)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    The authors describe an intelligent controller (ICON) for neurophysiology experiments that employs approximate reasoning techniques and a dynamic control planner (DYNCON) to perform real-time analysis and control of the experiment. Results from experiments simulated from real data show that ICON reached the same conclusions as did the investigator during and after the actual experiment but that IC... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Extracting 3-D structure and focused images using an optical microscope

    Publication Year: 1992, Page(s):292 - 301
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (708 KB)

    Describes a novel method for recovering three-dimensional shapes and focused images of microscopic objects. A small sequence of object images is obtained by translating the object through the focused plane of the microscope. The sum-modified-Laplacian (SML) operator is developed to compute local measures of the quality of image focus. The SML operator is applied to the image sequence, and the focu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • FLAPECAN: a knowledge based system in electrocardiogram diagnosis

    Publication Year: 1992, Page(s):648 - 655
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    FLAPECAN is a knowledge-based system designed to aid in the interpretation of electrocardiograms (ECGs). Diagnoses are based upon simple features of the ECG being analyzed. The system may be used to aid in generating diagnoses either by a human user or by an automated analysis system where feature recognition is provided. The system was implemented with fuzzy-logic based inference in FLX, a knowle... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A phoneme recognition system using modular construction of time-delay neural networks

    Publication Year: 1992, Page(s):704 - 709
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    Research on alternative approaches of representing phoneme data to be input into an artificial neural network and alterations that can be made in the network to reduce training time without sacrificing recognition rate is described. A modularly constructed time-delay neural network (TDNN) trained to identify English stop consonant phonemes under speaker-independent, continuous speech conditions wa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design and implementation of a clinical MSI workstation

    Publication Year: 1992, Page(s):138 - 146
    Cited by:  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    It is noted that magnetic source imaging (MSI) has unique processing and presentation requirements that must be addressed for it to become incorporated into clinical practice. As the combination of multislice medical imaging, particularly magnetic resonance imaging (MRI), and magnetoencephalography (MEG) functional localization, MSI is heavily computer-dependent for data preparation and evaluation... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A transputer-based EMG-system with integrated knowledge-base for diagnostic-support

    Publication Year: 1992, Page(s):353 - 359
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    A system is described which should assist the physician during an EMG (electromyographic) examination and in the diagnostic process and should help to reduce the examination time. For the realization of the system, a multiprocessor environment (transputer network) is used to build a fully integrated system on which tasks like data acquisition, signal display in real time, signal processing and ana... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Estimating simple closed contours in images

    Publication Year: 1992, Page(s):35 - 43
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    A technique for estimating the boundary of objects that may be described by a simple closed contour is presented. The problem is posed as one of maximum a posteriori (MAP) optimization. The method employs an elliptical Fourier series to describe the contour. A scaled derivative-of-Gaussian description of the object boundary cross-section is employed, coupled with guided gradient descent estimation... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Knowledge-based system for medical image compression

    Publication Year: 1992, Page(s):442 - 449
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    Presents a way of systemic knowledge modelling representing objective medical image knowledge and compression for picture archiving and communication. A novel encoder model is proposed such that high compression ratio and acceptable visual perception are achieved. The developed knowledge-base system is designed to deal with selecting the suitable structure for the encoder model such that the above... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.