A Use of Adaline as an Automatic Method for Interpretation of the Electrocardiogram and the Vectorcardiogram

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概要

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• A learning machine "adaline neuron" was employed for automatic diagnosis of the vectorcardiogram and the electrocardiogram. The frontal circle and the horizontal circle were divided into 480 meshes. The features were expressed by a binary digit, whether the vector loops passed through each mesh or not. In a part of the trials, 5 sets of binary digits were applied in addition to QRS duration and direction of inscription of QRS loops and T loops. In this trial a total of 490 meshes were used. Vectorcardiograms were taken by FRANK'S method in 235 cases. Several methods of adaline usage were tried. The best result was obtained so far by successive dichotomies based on the principle of the logical decision tree. First the normal patterns and the abnormal patterns were divided. The correct ratio was 96.5% when the 490 meshes were employed, cases of an output value within ±10 units being regarded as undecided. Next the abnormal cases were divided into two groups depending on whether the QRS duration was more than 0.12 seconds or less. The group of cases with a QRS duration of less than 0.12 seconds was divided into right ventricular hypertrophy and others. The correct ratio was 98.6%. The remaining cases were divided into left ventricular hypertrophy and myocardial infarction, the correct ratio being 88.8%. The group of cases with a QRS duration of more than 0.12 seconds was easily divided into complete left and right bundle branch block in all cases. Here the number of meshes could be decreased to 59 meshes without changing the accuracy appreciably. This attempt showed that the application of the adaline for automatic diagnosis of the vectorcardiogram and the electrocardiogram is promising.

• 社団法人日本循環器学会の論文
• 1969-08-20

著者

• TSUCHIYA SHIGERU

  Department of Pediatrics, Tohoku University Graduate School of Medicine

• Suzuki Fumio

  Fukujuji Hospital

• Suzuki Fumio

  First Department of Internal Medicine

• SUZUKI Fumio

  The First Department of Internal Medicine,Tokyo Medical and Dental University

• Sano Toyomi

  Institute For Cardiovascular Diseases Tokyo Medical And Dental University

• Sano Toyomi

  Department Of Clinical Physiology Tokyo Medical And Dental University

• Suzuki Fumio

  Mitsubishi Electric Corporation

• Suzuki Fumio

  Department Of Regulatory Radiobiology Research Institute For Radiation Biology And Medicine Hiroshim

• Sano Toyomi

  Institute For Card. Vasc. Diseases Tokyo Medical And Dental Univ. School Of Med.

• Sano Toyomi

  Inst. For Cardiovasc. Dis. Tokyo Med. & Dental Univ.

• Tsuchiya Shigeru

  Department Of Pediatrics Tohoku University Graduate School Of Medicine

• Tsuchiya Shigeru

  1st Dept. Of [ntern. Med. Tokyo Med. And Dent. Univ

• Sano Toyomi

  Inst. For Cardiovasc. Dis. Tokyo Med. And Dental Univ.

• Sano Toyomi

  Institute For Cardiovascular Disease Tokyo Medical And Dental University

• Sano Toyomi

  Professor Of Institute For Cardiovascular Diseases School Of Medicine Tokyo Medical And Dental Unive

• Tsuchiya Shigeru

  Department Of Clinical Physiology Institute For Cardiovascular Diseases Tokyo Medical And Dental Uni

• Suzuki Fumio

  Tokyo Med. And Dental Univ.

• Tsuchiya Shigeru

  Department Of Clinical Physiology Institute For Cardiovascular Diseases Tokyo Medical And Dental University

• SANO Toyomi

  Department of Clinical Physiology and Medicine, Institute for Cardiovascular Diseases Tokyo Medical and Dental University

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