Studies in health technology and informatics
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Stud Health Technol Inform · Jan 2000
Dimension reduction for highdimensional online-monitoring data in intensive care.
Nowadays high dimensional data in intensive care medicine can be captured, stored, and retrieved with the help of clinical information systems. Intelligent alarm systems are needed for an adequate bedside decision support, in the course of which the detection of qualitative patterns in physiologic monitoring data such as outliers, level changes, or trends aims at a proper classification of the patients state. ⋯ We describe methods for reducing the dimension and for keeping the computational efforts necessary for monitoring low. We present preliminary results of an ongoing study on monitoring critically ill patients.
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Stud Health Technol Inform · Jan 2000
G2H--graphics-to-haptic virtual environment development tool for PC's.
For surgical training and preparations, the existing surgical virtual environments have shown great improvement. However, these improvements are more in the visual aspect. The incorporation of haptics into virtual reality base surgical simulations would enhance the sense of realism greatly. ⋯ G2H transforms graphical virtual environments (created or imported) to haptic virtual environments without programming. The G2H capability has been demonstrated using the complex 3D pelvic model of Lucy 2.0, the Stanford Visible Female. The pelvis was made haptic using G2H without any further programming effort.
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This paper will describe a suite of surgical simulators that we have designed and implemented to run on the WWW. The procedures that have been modelled include simulations of ventricular catheterisation, and lumbar puncture. We will present a detailed overview of implementation and operation of these simulators, and indicate results from early use. The advantages and disadvantages of our approach will be discussed.
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Stud Health Technol Inform · Jan 2000
Multimedia-based courseware in the Virtual Learning Center at the Hannover Medical School.
The commercial use of the World Wide Web causes an extensive change in information technology. Web browser are becoming the universal front-end for all kinds of client-server applications. The possibilities of telematics offer a base for multimedia applications, for instance telelearning. ⋯ A very important part of graphic design in the context of multimedia applications is the creation and interactive use of images (still, moving). The growth and the complexity of medical knowledge as well as the need for continuous, fast, and economically feasible maintenance impose requirements on the media used for medical education and training. Web-based courseware in the Virtual Learning Center at the Hannover Medical School is an innovative education resource for medical students and professionals.
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Stud Health Technol Inform · Jan 2000
Healthcare knowledge acquisition: an ontology-based approach using the extensible markup language (XML).
The healthcare enterprise requires a great deal of knowledge to maintain premium efficiency in the delivery of quality healthcare. We employ Knowledge Management based knowledge acquisition strategies to procure 'tacit' healthcare knowledge from experienced healthcare practitioners. ⋯ We present a healthcare Tacit Knowledge Acquisition Info-structure (TKAI) that allows remote healthcare practitioners to record their tacit knowledge. TKAI employs (a) ontologies for standardisation of tacit knowledge and (b) XML to represent scenario instances for their transfer over the Internet to the server-side Scenario-Base and for the global sharing of acquired tacit healthcare knowledge.