Proceedings. 11th IEEE Symposium on Computer-Based Medical Systems (Cat. No.98CB36237)

12-14 June 1998

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  • Proceedings. 11th IEEE Symposium on Computer-Based Medical Systems (Cat. No.98CB36237)

    Publication Year: 1998
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    Freely Available from IEEE
  • Technical issues in multimodality medical image registration

    Publication Year: 1998, Page(s):2 - 7
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (23 KB)

    Two one-day workshops were held in 1997 that brought together a group of 38 experts from nine countries to address several aspects of the issues surrounding multimodality medical image registration. The first workshop produced an agenda that defined the significant problems and assigned them to subgroups for study. The second reviewed the results, limited the scope of the problem and proposed an a... View full abstract»

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  • A PC-based system for visualization of the electrical axis and vectocardiogram

    Publication Year: 1998, Page(s):8 - 12
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (427 KB)

    Presents a simple and low-cost PC-based system, designed and implemented with the idea of providing specialists with an automated tool for the monitoring of cardiac electrical activity, specifically the heart electrical axis. Previous studies have shown that, after obtaining the voltage from some specific points, it is possible to numerically compute the electrical axis, which represents the avera... View full abstract»

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  • Lossless coding of color images using color space transformations

    Publication Year: 1998, Page(s):13 - 18
    Cited by:  Papers (7)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    The key issue in the development of lossless compression techniques has been the manipulation of the image model from a probabilistic point of view in order to reduce the bit rates as represented by the entropy of such a model. In this respect, arithmetic coding using adaptive models shows excellent performance and is easy to implement. On the other hand, many studies have been dedicated to find s... View full abstract»

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  • Segmentation of mammograms into distinct morphological texture regions

    Publication Year: 1998, Page(s):20 - 25
    Cited by:  Papers (6)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (259 KB)

    Presents a comprehensive discussion on the segmentation of mammograms using morphological texture features. These features are derived from morphological granulometries with various structuring elements. Each structuring element captures a specific texture content. The segmentation is carried out in an unsupervised manner by applying the KL (Karhunen-Loeve) transform feature reduction and Voronoi ... View full abstract»

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  • Computer-assisted decomposition of the electromyograms

    Publication Year: 1998, Page(s):26 - 31
    Cited by:  Papers (4)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (309 KB)

    Analyses the scope of multimodal parametric searching (MPS) as a means for the decomposition of electromyograms (EMGs). The approach is based on a predefined set of signal sources that are described by some parameters. These signal sources are searched for in a superimposed signal by calculation of the Euclidian distance and by looking for its minimum. The signal sources are applied successively, ... View full abstract»

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  • A PC-based cephalometric analysis system

    Publication Year: 1998, Page(s):32 - 37
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    Cephalograms are clinically useful for cephalometric diagnosis and superimposition. The measurements for cephalometry has always been done manually in practice. We have developed a cephalometric analysis system which can be used to improve the measurements by computer software. The software was developed as a multi-document interface (MDI) application under the environment of Microsoft Windows. Tw... View full abstract»

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  • Object-oriented model of a health care system

    Publication Year: 1998, Page(s):40 - 43
    Cited by:  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (17 KB)

    Proposes a prototype for a universal object-oriented model of a health care system in a fashion similar to the object-oriented approach used for development in version 3.0 of the HL7 standard for communication messages. In our model, all participants of the health care system are described as belonging to one of the object classes Patient, Medical Provider, Medical Knowledge Base and Medical Insur... View full abstract»

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  • Probabilistically predicting penetrating injury for decision support

    Publication Year: 1998, Page(s):44 - 49
    Cited by:  Papers (2)  |  Patents (7)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (363 KB)

    Examines an approach for integrating 3D structural reasoning, using computer models of the human anatomy, with diagnostic reasoning based on Bayesian networks in order to probabilistically predict injuries to anatomic structures from gunshot wounds. An interactive 3D graphical system has been created which allows the user to visualize different bullet path hypotheses and computes the probability t... View full abstract»

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  • Advanced dynamic selection of diagnostic methods

    Publication Year: 1998, Page(s):50 - 54
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (110 KB)

    Several data mining methods have recently been developed to extract knowledge from large databases. The problem of selecting the most appropriate data mining method(s) has long been solved using static selection methods, and it is only recently that several effective dynamic selection approaches have been proposed. It is expected that dynamic selection which takes into account the expertise areas ... View full abstract»

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  • A paradigm shift in systems thinking for diagnostic imaging

    Publication Year: 1998, Page(s):55 - 59
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (111 KB)

    Driven by intense pressures to reduce costs and become more competitive, medical imaging has reached a saddle-point of efficiency where the myriad "islands of automation" can no longer be independently managed. Given the commercial systems available today, however, no single system can meet all end-user and institutional needs. At the same time, the cost of interfaces connecting the different isla... View full abstract»

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  • Diagnostic process optimisation with evolutionary programming

    Publication Year: 1998, Page(s):62 - 67
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (42 KB)

    In paediatric cardiology, a database and its supporting information system are indispensable in order to conduct more extensive and detailed investigations. Diagnostic decisions during the diagnostic process in congenital heart disease (CHD) must be supported by a suitable decision support system. In the majority of children with CHD, the diagnosis should be made, if possible, before the complete ... View full abstract»

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  • Object-oriented approach to the radiology workstation design

    Publication Year: 1998, Page(s):68 - 71
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    Object-oriented technology has long been advocated as a better way to construct complicated large-scale software projects. We have adopted such a methodology in our design of radiology workstations. In retrospect, it proved to be advantageous in at least four aspects: (1) system modeling and the software development process, (2) system operation and management, (3) multimedia information represent... View full abstract»

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  • Software for on-line telemedicine reporting

    Publication Year: 1998
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    Online text reporting during telemedicine sessions ranges from infrequent to non-existent. Computed solutions for the immediate creation and relaying of text were developed by analyzing paper-based work methods. Then, information processing mechanisms were programmed through 80 screens carrying 200 functions to automatically create medical reports. Other supports enabled report storage in a relati... View full abstract»

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  • A neurodatabase system for mammographic screening

    Publication Year: 1998, Page(s):78 - 83
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (681 KB)

    A novel integration of a neural network and a mammographic database provides a promising means of amplifying the radiologist's power to screen mammograms. The principal novelty of this system is a neural network that produces both a classifier and a 2D relational map of the mammograms in a diagnostically proven database. We therefore refer to this as a neurodatabase system. Radiologists interactin... View full abstract»

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  • An approach to using a generalized breast model to segment digital mammograms

    Publication Year: 1998, Page(s):84 - 89
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (161 KB)

    Proposes a model-based segmentation system that consists of a modeling suite and an image processing suite. The modeling suite incorporates knowledge about breast tissue characteristics, compression effects and the mammogram acquisition process. Given a specific segmentation task, this information is utilized by the system to invoke proper operators from the image processing suite. This paper disc... View full abstract»

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  • Lexicon assistance reduces manual verification of OCR output

    Publication Year: 1998, Page(s):90 - 95
    Cited by:  Papers (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (731 KB)

    An OCR system chosen for its high recognition rate and low percent of false positives also assigns low confidence values to many characters that are actually correct. Human operators must verify all words containing low-confidence characters. We describe the creation of a lexicon optimized for automatically selectively resetting confidence values to high, thus reducing operator verification time. ... View full abstract»

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  • Computer models for assessing precision and accuracy limitations of an optical blood gas measurement system

    Publication Year: 1998, Page(s):98 - 103
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (25 KB)

    Describes a system which uses dual-wavelength fiber-optic fluorescent technology for measurement of blood gas values (P/sub O2/, P/sub CO2/ and pH). The system is required to provide precise and accurate results, following a single calibration, for up to six days under conditions where the ambient temperature may change by 20/spl deg/C. This discussion is limited to the dual-wavelength CO/sub 2/ o... View full abstract»

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  • Unified proportionality equation for modeling biological and pharmacological data

    Publication Year: 1998, Page(s):104 - 109
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (793 KB)

    Introduces the modeling of biological and pharmacological data using a new mathematical concept. A wide variety of sigmoidal and bell-shaped batch data curves in the life sciences can be described by the unified proportionality equation: /spl plusmn/d(q/sup m//spl omega//sub 1/)=K(q/sup n//spl omega//sub 2/), where d is the notation of the differential and q is the notation of the logarithm, K is ... View full abstract»

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  • Computerized palpation of the prostate: experimental and mathematical modeling of the stress-strain fields

    Publication Year: 1998, Page(s):110 - 112
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    Prostate cancer is the second leading cause of death from cancer among men. There is a great need for new effective tools for detecting prostate cancer and monitoring its treatment. Mechanical imaging (MI) is a promising candidate to fill this gap. MI is a recently invented modality of medical diagnostics and cancer detection. MI is based on the reconstruction of tissue structure using mechanical ... View full abstract»

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  • A stochastic model for scheduling programs to maximize outcome [of hospital profits]

    Publication Year: 1998, Page(s):113 - 116
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (383 KB)

    This paper investigates the relationship of hospital profits from CT scanning and its schedule administration for scheduled patients. A stochastic model is constructed to describe the dynamics of patient arrival and the scanner's service. Hospital profits are calculated from the service charges, subtracting the possible loss due to withdrawal of discouraged patients. Hospital expenses for hardware... View full abstract»

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  • Modeling mammography examinations

    Publication Year: 1998, Page(s):118 - 131
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (81 KB)

    The modeling of diagnostic examinations reduces the sample size needed to acquire statistical power. This paper compares the models of ROC analysis, channel models of diagnostic examinations, and uncertainty measures in modeling mammography examinations. The cited models are applied to screening mammography. The result of the use of these models is that less data is required for achieving the chos... View full abstract»

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  • Architecture of a distributed imaging system

    Publication Year: 1998, Page(s):132 - 136
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (118 KB)

    We describe the architecture of a distributed medical imaging system. Designed to support both code and data mobility, the system attempts to exploit available computational resources within a collaborating group to apportion imaging tasks to the platforms best suited to their completion. The system is designed around a mixed Java-RMI (remote method invocation), CORBA and agent architecture. This ... View full abstract»

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  • A portable PET image reconstruction system for parallel machines

    Publication Year: 1998, Page(s):137 - 142
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (35 KB)

    With its unique diagnostic capabilities for imaging metabolic body functions, positron emission tomography (PET) has become the superior system among all noninvasive modalities for quantitatively evaluating physiology. Commonly-used reconstruction algorithms such as filtered backprojection (FBP) have been adopted due to their rapid computation but may compromise the resulting image quantitatively ... View full abstract»

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  • An optimized magnetic tissue tagging sequence for echo-planar imaging

    Publication Year: 1998, Page(s):144 - 150
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (857 KB)

    Magnetic tissue tagging is becoming a very viable non-invasive tool in the assessment of the myocardium. Landmarks are introduced on the reconstructed MR heart image, which are otherwise missing in the cardiac anatomy. Quantification of the myocardial function relies on the accuracy of the tag detection and tracking algorithms. Perfecting the tagging process simplifies the detection and tracking p... View full abstract»

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