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Optimization of Doppler Echocardiographic Velocity Measurements Using an Automatic Contour Detection Method by Emmanuel Gaillard; Lyes Kadem; Marie-Annick Clavel; Philippe Pibarot; Louis-Gilles Durand is a Medicine article available to read on EtoBox.
What is Optimization of Doppler Echocardiographic Velocity Measurements Using an Automatic Contour Detection Method about?
Intra- and interobserver variability in Doppler echocardiographic velocity measurements (DEVM) is a significant issue. Indeed, imprecisions of DEVM can lead to diagnostic errors, particularly in the quantification of the severity of heart valve dysfunctions. To reduce the variability and rapidity of DEVM, we have developed an automatic method of Doppler velocity wave contour detection, based on active contour models. To validate our new method, results obtained with this method were compared with those obtained manually by two experienced echocardiographers on Doppler echocardiographic images of left ventricular outflow tract and transvalvular flow velocity signals recorded in 30 patients with aortic or mitral stenosis, 20 with normal sinus rhythm and 10 with atrial fibrillation. We focused on the three essential variables that are measured routinely using Doppler echocardiography in the clinical setting: the maximum velocity (Vmax), the mean velocity (Vmean) and the velocity-time integral (VTI). Comparison between the two methods has shown a very good agreement. A small bias value was found between the two methods (between -3.9% and 0.5% for Vmax, between -4.6% and -1.4% for Vmean
Who reads Optimization of Doppler Echocardiographic Velocity Measurements Using an Automatic Contour Detection Method?
It is typically read by researchers, students, and practitioners in Medicine.
- Author
- Emmanuel Gaillard; Lyes Kadem; Marie-Annick Clavel; Philippe Pibarot; Louis-Gilles Durand
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0301-5629)
- Published
- 2010
- Language
- EN
- Field
- Medicine (Health Sciences)