Record Details

A vector electrocardioscope system for clinical studies

ScholarsArchive at Oregon State University

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Title A vector electrocardioscope system for clinical studies
Names Petersen, Walter Anton (creator)
Weber, Leonard J. (advisor)
Date Issued 1964-08-31 (iso8601)
Note Graduation date: 1965
Abstract This paper discussed the human electrocardiogram, the instrumentation
used to graphically record it, and the design and performance
of a specialized system for vector cardiography: the Vector Electrocardioscope
(VECS) System. The introduction reviews in considerable
detail the pertinent known physiology of the heart, especially the
electrophysiology responsible for the genesis of the electrocardiogram.
The development of electrocardiography in both its concepts and
apparatus is traced from the early 19th century to the present day.
Vector cardiography is defined with a discussion of its concepts,
theoretical bases, and present day instrumentation.
The general design considerations of gain, noise and bandwidth as
applied to electrocardiography are considered, as well as, display
conventions and electrical hazards. Customer specifications and the
wishes of the system designer are shown to interact to influence the
particulars of system design.
In discussing the VECS System it is first "blocked out" to meet
specifications, and then the specific requirements of each functional
operation described. The modifications required to adapt commercial
instruments to their system task are detailed. The design of two
instruments peculiar to the VECS System are reported. The VECS
Control Panel is the operational heart of the VECS System and
provides signal conditioning (system gain and positioning) and display
(system mode, blanking, z-axis intensification, time markers,
calibrator) functions. The VECS Input Selector features patient
electrode connections, internal calibration, and electrocardiographic
lead selection.
CRT photographs illustrate the basic performance of the VECS
System: 180 KC and 25 FIT peak-to-peak noise. Other photographs
illustrate the systems use with a patient and the technique of selectable
vectorcardiography. Desirable refinements of the present system,
proposed modifications for future systems, and speculations as the
future extension of the VECS System are discussed.
Genre Thesis/Dissertation
Topic Electrocardiography
Identifier http://hdl.handle.net/1957/48462

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