Computer Ways of Explicitation of the Compressed ECG Data

  • Hilário Bastos Machado
Conference paper
Part of the Lecture Notes in Medical Informatics book series (LNMED, volume 25)


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.


Good Diagnostic Performance Human Torso Wide Expansion Rhythm Analysis Spatial Magnitude 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • Hilário Bastos Machado
    • 1
  1. 1.Faculty of MedicineUniversity of LisbonPortugal

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