Computer Ways of Explicitation of the Compressed ECG Data
Advanced technology has always been applied to ECG equipment. However, classical electrocardiography has not followed the technical progress, since hardly any new information has been added during the past four decades. The main reason for this paradox may be the insistence of the using limb extremity leads, these are standing tradition, since Einthoven used them in the beginning of the century. A salt water bath was needed. Nevertheless, his scientific work was based on the heart vector concept, this being defined in spherical coordinates (1). The limbs were used as an extension of the human torso. Many researchers tried to find different lead systems. The physical based Frank lead network reached a general agreement, and usage in vectorcardiography. Despite the aim for a better diagnostic performance, overall in myocardical in farction, vectorcardiograms (VCG) did not have the wide expansion of the ECG, because of the unpractical, unportable equipment that needed a shielded room and also, although the better explanation of the QRS, the usual VCG did not apply to the rhythm analysis.
KeywordsGood Diagnostic Performance Human Torso Wide Expansion Rhythm Analysis Spatial Magnitude
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- 1.Burch GE and De Pasquale NP: A history of electrocardiography. Year Book Med Publ., Chicago, 1964Google Scholar
- 4.Dower GE, Osborne J et al: A new system for ECG analysis oriented toward polarcardiography. In: Computers in Cardiology. IEEE Compu ter Society, Roterdam, 1977, 497Google Scholar
- 7.Machado HB and Silva MEP: Some findings on normal Spherocardiogram… In: Electrocardiology 81. Ed Antalóczy and Préda. HAS Budapest 1982, 343Google Scholar
- 8.Machado HB, Silva MEP and Dower GE: QRS contour analysis… In: The Applications of Computers in Cardiology: State of the Art… Ed. Martin Quetglas et al. Elsevier Sc. Publ, IFIP — IMIA, 1984, 71.Google Scholar