NDLI: Quantification of echo contrast passage across a patent foramen ovale

Content Provider	IEEE Xplore Digital Library
Author	Norton, M.S. Sims, A.J. Morris, D. Zaglavara, T. Kenny, M.A. Murray, A.
Copyright Year	1998
Description	Author affiliation: Dept. of Cardiology, Freeman Hosp., Newcastle upon Tyne, UK (Norton, M.S.)
Abstract	A parent foramen ovale (PFO) is a potential cardiac source of embolus. Agitated saline is usually injected during transoesophogeal echocardiography (TOE) to detect PFOs by observing contrast passing from right to left atrium. The authors present a technique for quantifying the level of contrast passing through the septum into the left atrium by analysing captured TOE images. Images were analysed from ten patients with a recent history of stroke and in whom a PFO was found. The technique was sufficiently sensitive to detect a PFO in all cases despite sub-optimal opacification of the right atrium in four of the patients. This study has shown that it is practical to automate the detection and quantification of contrast using image analysis, which the authors believe is a first step towards a method of objectively quantifying contrast passage across a patent foramen ovale.
Starting Page	89
Ending Page	92
File Size	429235
Page Count	4
File Format	PDF
ISBN	0780352009
ISSN	02766547
DOI	10.1109/CIC.1998.731730
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-09-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image analysis Cardiology Blood Valves Biomedical imaging Physics Hospitals Echocardiography History Biological materials
Content Type	Text
Resource Type	Article

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