Electrocardiography , Vector - Cardiography , Ballistocardi - Ography , and Other Graphic Technics
نویسندگان
چکیده
Editor: STANFORD WESSLER, M.D.
منابع مشابه
Some requirements in equipment and technics for vectorcardiography.
To reduce the effects of extraneous potentials caused by muscle tremor, sweating, and interference from power circuits, it is desirable to restrict the frequency range of the cathode ray vectorcardiograph. Mathematical analysis of idealized waves and experiments with a photoelectric electrocardiographic generator indicate that a frequency range between the half-power frequency of 0.8 to 80 cycl...
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