Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8130865 | Ultrasound in Medicine & Biology | 2018 | 8 Pages |
Abstract
Severe valvular regurgitation can lead to pulmonary hypertension, atrial fibrillation and heart failure. Vena contracta width is used to estimate the severity of the regurgitation. Parameters affecting visualization of color Doppler have a significant impact on the measurement. We propose a data-driven method for automated adjustment of color gain based on the peak power of the color Doppler signal in the vicinity of the vena contracta. A linear regression model trained on the peak power was used to predict the orifice diameter. According to our study, the color gain should be set to about 6âdB above where color Doppler data completely disappears from the image. Based on our method, orifices with reference diameters of 4, 6.5 and 8.5âmm were estimated with relative diameter errors within 18%, 12% and 14%, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Acoustics and Ultrasonics
Authors
Pawel Kozlowski, Alfonso Rodriguez-Molares, Thor Andreas Tangen, Kjell Kristoffersen, Hans Torp, Olivier Gerard, Eigil Samset,