Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Analogue Echogram Range Gate Tracker for Clinical Echocardiography.
Author Petrovick, Mathew L. ; Malindzak, George S. ; Haak, Edward D. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1979
Report Number EPA-600/J-79-131;
Stock Number PB81-222705
Additional Subjects Medical equipment ; Feasibility study ; Physiological effects ; Reprints ; Echocardiography ; Noninvasive tests ; Medical computer applications ; Diagnostic equipment
Library Call Number Additional Info Location Last
NTIS  PB81-222705 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 14p
The fundamental purpose of this paper is to present the results of a feasibility study for an on-line, real-time automatic range gate tracker (ARGT) for clinical echocardiography specifically for the purpose of determining cardiac output noninvasively and in real time. The basic ARGT design represents an implementation of specific algorithms and a system controller that permit user interaction and interpretation of clinical echocardiograms. In its analytical mode, the ARGT automatically tracks cardiac echoes as visually perceived and selected by the user. While tracking specific cardiac echoes, the ARGT converts the complex ultrasonic echogram into a pair meaningful analogue signals (corresponding to the motion of the anterior and posterior left ventricular walls) from which dimensional information corresponding to dynamic geometric changes of the heart are derived. From this information, the cardiac output is computed in real time.