K Yamamoto

Shimane University, Matsue-shi, Shimane-ken, Japan

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Publications (4)1.13 Total impact

  • Article: An integrated multimedia medical information network system.
    K Yamamoto, J Makino, N Sasagawa, M Nagira
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    ABSTRACT: An integrated multimedia medical information network system at Shimane Medical university has been developed to organize medical information generated from each section and provide information services useful for education, research and clinical practice. The report describes the outline of our system. It is designed to serve as a distributed database for electronic medical records and images. We are developing the MML engine that is to be linked to the world wide web (WWW) network system. To the users, this system will present an integrated multimedia representation of the patient records, providing access to both the image and text-based data required for an effective clinical decision making and medical education.
    Studies in health technology and informatics 02/1998; 52 Pt 1:193-6.
  • Article: The frequencies of disease names with the natural language used in the hospital information system.
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    ABSTRACT: The statistical behavior of disease names referred by physicians with the natural language in a large hospital information system is little known despite the theoretical and practical interest. To address this issue, we reviewed and investigated the usage-frequencies of 18,274 disease names, 10,288 for outpatient care and 7986 for inpatient care, referred from October 1983 to June 1992 with the notation of the natural language in Japanese by the use of the registration-retrieval system of disease names at Fukui Medical School, Japan. Consequently, we found that the investigated distributions did not conform to the Poisson distribution, but conformed well to the Polya-Eggenberger distribution in both cases of outpatient and inpatient care. It implies that the disease names with the natural language are possibly referred by physicians with some interrelations.
    Journal of Medical Systems 11/1995; 19(5):381-5. · 1.13 Impact Factor
  • Article: Education on medical informatics integrated in the campus information network system at Shimane Medical University.
    K Yamamoto, N Sasagawa, I Kamae
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    ABSTRACT: An integrated campus information network system at Shimane Medical University has been developed to organize medical information generated from each section and provide information services useful for education, research, and clinical practice. This report outlines: the education-research system in connection with a campus information network system, the MUMPS programming self-directed learning software, and the curriculum of education on medical informatics.
    Medinfo. MEDINFO. 02/1995; 8 Pt 2:1158-61.
  • Article: [Sensitivity and specificity in AIDS screening system].
    I Kamae, K Yamamoto
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    ABSTRACT: The interest in the optimal combination of the diagnostic tests is growing in terms of reasoning rationale and cost-effectiveness of the diagnostic system. As an example of the two-stage test system, we investigated the sensitivity, specificity, and posterior probabilities of the HIV screening system with incomplete information of the conditional independency between the enzyme immunoassay and the Western Blot. The theoretical analysis of the probabilistic reasoning of the HIV screening system could provide us with the upper and lower limits of the predictive positive value, given the prior probability of HIV infection. Consequently, we could show that the lower and the upper boundaries of the predictive positive value are, respectively, 4.07% and 100% for the low risk group (prevalence of HIV: 0.01%), while 99.86% and 100% for the high risk group (prevalence of HIV: 62%). These analyses imply that clinicians must be very careful in the interpretation of the positive test result in the HIV screening system, depending on how the risk of HIV infection of the patient is estimated in advance. In addition to the probabilistic analyses of the test parameters, the approach by use of the utility theory is favorable for the issue of optimizing the diagnostic test sequences. It remains for future investigation.
    Rinsho byori. The Japanese journal of clinical pathology 07/1994; 42(6):580-4.