Patent ID: 6721591
Filing Date: 2004-04-13
Classification: A61B

Abstract:
A method of deriving a standard 12-lead electrocardiogram comprising the steps of:attaching a plurality of electrodes for sensing and measuring body surface potentials on positions that constitute a subset of a standard 12-lead system; measuring electrocardiographic waveforms for said subset from potentials sensed by said plurality of electrodes; calculating waveforms of remaining leads of said standard 12-lead system from said measured electrocardiographic waveforms; and deriving the standard 12-lead electrocardiogram based on said measured electrocardiographic waveforms and said calculated electrocardiographic waveforms, wherein a heart vector is obtained from said measured waveforms based on an inherent relationship among said heart vector, lead vectors of said subset, and said measured electrocardiographic waveforms, and wherein said electrocardiographic waveforms of said remaining leads are calculated based on said heart vector and lead vectors of said remaining leads.