Computer analysis of frequency spectrum of a phonothyreogram

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1979 English Publisher:Springer Science and Business Media LLCJournal:Medical & Biological Engineering & Computing, volume 17, pages 207-210 (issn: 0140-0118, eissn: 1741-0444,

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Authors: K J, Blinowska; M A, Czerminska; O A, Chomicki; T, Górowski;

doi: 10.1007/bf02440930

pmid: 312397

Computer analysis of frequency spectrum of a phonothyreogram

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Abstract

An analysis of phonothyreograms and phonocardiograms was made with the aid of an ND minicomputer and a CYBER 73 computer system using an electrocardiogram signal as a reference time signal. Programs were written to estimate the power spectral density function of these signals. In patients with Graves' disease and those with nodular goiter the intrinsic thyroid murmur was found to differ from the sound transmitted from the heart in healthy subjects by a large contribution of frequencies in the 250–750 Hz range, this factor being particularly pronounced in patients with Graves' disease.

Related Organizations

University of Warsaw
Poland

Keywords

Auscultation, Computers, Humans, Thyroid Function Tests, Graves Disease, Goiter, Nodular

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