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Information Technology in Biomedicine, IEEE Transactions on

Issue 2 • Date June 2000

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Displaying Results 1 - 13 of 13
  • Guest editorial: multimedia information technology in biomedicine

    Page(s): 85 - 87
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    Freely Available from IEEE
  • Teleconferencing with dynamic medical images

    Page(s): 88 - 96
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    Dynamic images, a sequence of static images displayed in rapid succession and perceived as a continuous motion by the human eye, are widely used in medicine. One of the primary objectives of telemedicine is the transmission of such images to a distant location to manage clinical problems remotely. A broad variety of methods is available to acquire, store, transmit and display these images. However, the context of the clinical problem determines which of these methods can be deployed in a telemedicine solution. This paper discusses the advantages and disadvantages of the different technologies and presents an example of a teleconferencing system for interventional cardiology. This system acquires cardiac angiography and intravascular ultrasound images and transmits them over an existing Internet connection to a distant location. It is specifically optimized for clinical conferencing, where time is limited for each case presentation during the conference, compared to the relatively long time available for the conference preparation. The system takes advantage of this characteristic by transmitting the images well in advance of the clinical conference and displaying them synchronously at both locations during the conference. This allows for the preservation of the original image quality. View full abstract»

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  • A medical digital library to support scenario and user-tailored information retrieval

    Page(s): 97 - 107
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    Current large-scale information sources are designed to support general queries and lack the ability to support scenario-specific information navigation, gathering and presentation. As a result, users are often unable to obtain desired specific information within a well-defined subject area. Today's information systems do not provide efficient content navigation, incremental appropriate matching or content correlation. We are developing the following innovative technologies to remedy these problems: (1) scenario-based proxies, enabling the gathering and filtering of information customized for users within a pre-defined domain; (2) context-sensitive navigation and matching, providing approximate matching and similarity links when an exact match to a user's request is unavailable; (3) content correlation of documents, creating semantic links between documents and information sources; and (4) user models for customizing the retrieved information and the presentation of results. A digital medical library is currently being constructed using these technologies to provide customized information for the user. The technologies are general in nature and can provide custom and scenario-specific information in many other domains (e.g. crisis management). View full abstract»

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  • Web-based video for real-time monitoring of radiological procedures

    Page(s): 108 - 115
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    Web-based video transmission of images from CT and MRI consoles is implemented in an intranet environment for real-time monitoring of ongoing procedures. Images captured from the consoles are compressed to video resolution and then broadcast through a Web server. When called upon, the attending radiologists can view these live images on any computer within the secured intranet network. With adequate compression, these images can be displayed simultaneously in different locations at a rate of 2 to 5 images/s through a standard local area network. While the quality of the images was insufficient for diagnostic purposes, our user survey showed that they were suitable for supervising a procedure, for positioning the imaging slices, and for routine quality checking before completion of a study. The system was implemented at UCLA to monitor nine CTs and six MRIs distributed in four different buildings. This system significantly improved the radiologists' productivity by saving valuable time spent in trips between reading rooms and examination rooms. It also improved patient care and throughput by reducing the time spent waiting for the radiologists to check a study before removing the patient from the scanner. View full abstract»

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  • InternetQuestion and Answer (iQ&A): a Web-based survey technology

    Page(s): 116 - 125
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    Presents "InternetQuestion and Answer" (iQ&A), a Web-based survey development and implementation technology, which has been designed for constructing online surveys for educational, medical or administrative purposes. The iQ&A system is a three-tiered database-backed Web system that has been developed to support a wide range of applications. Surveys are considered as general data collection instruments and include a wide field of application. iQ&A facilitates rapid survey construction and administration, which is ideally suited for biomedical research as well as other research and educational activities. Full report management capabilities provide the survey publisher with online access to current information on survey responses. Current implementations of this technology in the areas of biomedical applications of clinical trials, longitudinal research and other research-related systems are presented. Further refinement of the current system should lead to a powerful general survey technology for broad-based applications. View full abstract»

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  • Genetic algorithms for a robust 3-D MR-CT registration

    Page(s): 126 - 136
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    Presents an original usage of genetic algorithms as a robust search space sampler in an application to 3D medical image elastic registration. An overview of the standard steps of a registration algorithm is given. We focus on the genetic algorithm use, and particularly on the problem of extracting the optimal solution among the final genetic population. We provide an original encoding scheme relying on a structural approach of point matching and then point out the need for a local optimization process. We then illustrate the algorithm with a concrete registration example and assert the results with a direct multi-volume rendering tool. Finally, the algorithm is applied to the Vanderbilt medical image database to assert its robustness and in order to compare it with other techniques. View full abstract»

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  • Construction of a human topological model from medical data

    Page(s): 137 - 143
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    Medical imaging can provide data for useful views of the interior details of human anatomy. In addition to visualization, which in general has been the primary reason for obtaining these data, many other uses are possible. These include modeling of different elements and their inter-relationships -topological modeling, simulation of physical processes, analysis of movements and validation of models. In this paper, we describe some of the modeling issues from medical imaging. The issues are particularly related to topological modeling of different anatomical elements: bones, muscles, articulations, etc. A 3D topological modeler is presented with which anatomists and other users can build a topological database containing structural, topological and mechanical information of anatomical elements. View full abstract»

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  • Three-dimensional modeling and visualization of the cochlea on the Internet

    Page(s): 144 - 151
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    3D modeling and visualization of the cochlea using the World Wide Web (WWW) is an effective way of sharing anatomic information for cochlear implantation over the Internet, particularly for morphometry-based research and resident training in otolaryngology and neuroradiology. In this paper, 3D modeling, visualization and animation techniques are integrated in an interactive and platform-independent manner and implemented over the WWW. L.T. Cohen et al.'s (1996) template shape with mean cross-sectional areas of the human cochlea is extended into a 3D geometrical model. Also, spiral computer tomography data of a patient's cochlea is digitally segmented and geometrically represented. The cochlear electrode array is synthesized according to its specification. Then, cochlear implantation is animated with both idealized and real cochlear models. The insertion length, angular position and characteristic frequency of individual electrodes are estimated online during the virtual insertion. The optimization of the processing parameters is done to demonstrate the feasibility of this technology for clinical applications. View full abstract»

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  • Content-based retrieval of dynamic PET functional images

    Page(s): 152 - 158
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    The recent information explosion has led to a massively increased demand for multimedia data storage in integrated database systems. Content-based retrieval is an important alternative and complement to traditional keyword-based searching for multimedia data and can greatly enhance information management. However, current content-based image retrieval techniques have some deficiencies when applied in the biomedical functional imaging domain. In this paper, we presented a prototype design for a content-based functional image retrieval database system for dynamic positron emission tomography (PET). The system supports efficient content-based retrieval based on physiological kinetic features and reduces image storage requirements. This design makes it possible to maintain a large number of patient data sets online and to rapidly retrieve dynamic functional image sequences for the interpretation and generation of physiological parametric images, and offers potential advantages in medical image data management and telemedicine, as well as providing possible opportunities in the statistical and comparative analysis of functional image data. View full abstract»

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  • The design and applications of a recursive molecular modeling framework

    Page(s): 159 - 164
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    In this paper, we present a recursive molecular model that is suitable for multi-resolution analysis in a variety of application areas. Our approach allows ease of use by computer scientists and biologists by proposing a software interface for molecular analysis that hides programming details. We demonstrate that our design is flexible enough for use in desktop analytical applications, in large-scale parallel simulations, and as a server for remote molecular analysis across wide-area networks. View full abstract»

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  • Telemedicine for evaluation of brain function by a metacomputer

    Page(s): 165 - 172
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    A method of evaluating brain function using the metacomputer concept of the Globus system combined with the Message Passing Interface (MPI) is described. The proposed method has the ability to exploit various geographically distributed resources and parallel computing linked to a high-technology medical instrumentation system (magnetoencephalography) to analyze the functional state of the brain. It is envisaged that the method will lead to the realization of an efficient telemedicine system for health care. View full abstract»

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  • NEWBET: telemedicine platform for burn patients

    Page(s): 173 - 177
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    Problems detected in the current healthcare services for burn patients and emergency situations are taken into consideration in the development of a telemedicine platform, which is proposed. Taking as a reference the user requirements and the client-server architecture, a model of communications that allows a bidirectional exchange of information is reported. Special attention is focused towards the methodology applied and the design of a friendly user interface compatible with the current prevailing clinical protocols. The platform is based on a Microsoft Windows environment, and communications are implemented by using sockets. View full abstract»

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  • Real-time teleconsultation with high-resolution and large-volume medical images for collaborative healthcare

    Page(s): 178 - 185
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    Real-time consultation between referring physicians or radiologists with an expert is critical for timely and adequate management of problem cases. During consultation, both sides need to: 1) synchronously manipulate high-resolution digital radiographic images or large volume MR/CT images; 2) perform interpretation interactively; and 3) converse with audio. We present a specifically designed teleconsultation system in a digital imaging and communication in medicine picture archiving and communication systems (PACS) clinical environment. The system uses bidirectional remote control technology to meet critical teleconsultation application requirements with high-resolution and large-volume medical images operated in a limited bandwidth network setting. We give the system design and implementation methods, and also describe the teleconsultation procedure and protocol used in this system. Finally, laboratory and clinical evaluation results are discussed. View full abstract»

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Aims & Scope

The IEEE Transactions on Information Technology in Biomedicine publishes basic and applied papers of information technology applications in health, healthcare and biomedicine.

 

This Transaction ceased publication in 2012. The current retitled publication is IEEE Journal of Biomedical and Health Informatics.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Yuan-ting Zhang
427, Ho Sin Hang Engineering Building, The Chinese
University of Hong Kong, Shatin, NT, Hong Kong
ytzhang@ee.cuhk.edu.hk
Phone:+852 2609-8458
Fax:+852 2609-5558