Definitions for vectorcardiography
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Vectorcardiography is a method of recording the magnitude and direction of the electrical forces that are generated by the heart by means of a continuous series of vectors that form curving lines around a central point. Vectorcardiography was developed by E. Frank in the early 30's. Since the human body is a three dimesional structure, the basic idea is to construct 3 orthogonal leads containing all the electric information. The three leads are represented by right-left axis, head-to-feet axis and front-back axis. To calculate Frank’s leads X, Y and Z using the standard leads system, the following expressions are used: X = - Y = Z = -
U.S. National Library of Medicine
Recording of the moment-to-moment electromotive forces of the heart on a plane of the body surface delineated as a vector function of time.
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"vectorcardiography." Definitions.net. STANDS4 LLC, 2015. Web. 29 Nov. 2015. <http://www.definitions.net/definition/vectorcardiography>.