Continuous display of cardiac blood flow information

Details Continuous display of cardiac blood flow information Continuous display of cardiac blood flow information

1995-06-09

1997-06-03

Jaworski, Francis

Surgery

Truss

Pad

7386125, A61B 806, G01F 100

Patent

active

056344651

ABSTRACT:
A technique for continuously determining and displaying the peak velocities of spectral Doppler information is disclosed. A Doppler noise threshold level is determined from operating characteristics of the ultrasound system, probe, or both. Received spectral Doppler data for a spectral line is compared to this threshold to identify a valid peak velocity value. Spectral lines are examined in advance of their display to detect excursions due to artifacts such as valve clicks. Peak velocity values are interpolated and displayed in place of artifact peak values. Individual heart cycles over which quantified measures of cardiovascular performance are computed and displayed are selected by the R-wave intervals of an ECG trace. The interval of the concurrent spectral Doppler display corresponding to the heart cycle interval over which the quantified measures are computed or pertain is automatically highlighted for the user.

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