An ECG Transmission and Computer System:On the Application of Computer System for Medical Diagnosis in Wide Area

概要

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The utilization of computer analysis of electrocardiograms is expected to spread further through the establishment of a transmission system which could cover a broader area. Our investigation system in developing has been as follows : <BR. (1) A frequency modulation was used to transmit ECG, where the carrier frequency of FM was settled upon 1 kHz. The modulated ECG were transmitted through a coaxial cable. It was also scheduled to transmit the modulated ECG over the telephone network and/or wireless channel. The received waves were demodulated and recorded on a magnetic tape. In order to confirm the fidelity of the system, the original and the transmitted ECG were transformed into power spectra by Fourier analysis. The power spectra showed no significant difference between the transmitted ECG and the original ECG.<BR>(2) The transmitted ECG were measured automatically with a digital computer, and 54 parameters for differential diagnosis were settled and were picked out with the computer. A logical matrix with 54 symptomatic parameters and 123 entities of diagnosis was prepared. The clinical survey was undertaken upon a few cases of cardiac patients, and the practical application of this system were evaluated.
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