Title :
Model-based image processing of transmitral Doppler velocity profiles: toward automation
Author :
Hall, Andrew F. ; Kovács, Sándor I.
Author_Institution :
Cardiovascular Biophys. Lab., Washington Univ., St. Louis, MO, USA
Abstract :
Transmitral Doppler ultrasound has not yet fulfilled its potential as a clinical tool for the noninvasive quantitation of left ventricular diastolic function. In the effort to achieve this goal we have developed a model-based image processing method for quantitative characterization of transmitral Doppler velocity profiles (DVP). The method fits a kinematic model for diastolic filling to the single-valued velocity contour extracted from the DVP image. Improvement of the method includes complete automation of the overall process. Two aspects of automation are examined: data set selection and beat averaging. An algorithm for E-wave (early diastolic filling interval) data selection and three methods for averaging are discussed
Keywords :
Doppler measurement; acoustic signal processing; blood flow measurement; echocardiography; medical image processing; velocity measurement; E-wave data set selection; algorithm; automation; averaging methods; beat averaging; clinical tool; data set selection; diastolic filling; early diastolic filling interval; kinematic model; left ventricular diastolic function; model-based image processing; noninvasive quantitation; quantitative characterization; single-valued velocity contour; transmitral Doppler ultrasound; transmitral Doppler velocity profiles; Automation; Biomedical imaging; Biophysics; Cardiology; Filling; Hospitals; Image processing; Laboratories; Parameter estimation; Springs;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495848
