TY - GEN
T1 - A novel algorithm for modifying echocardiographic particle image velocimetry flow field
AU - Gu, Yanfeng
AU - Cui, Zhaoyu
AU - Yu, Xiao
AU - Wang, Lanfeng
AU - Xiu, Chunhong
PY - 2011
Y1 - 2011
N2 - Echocardiographic particle image velocimetry (E-PIV) technology is commonly used to trace the contrast bubbles intravenous injected in order to describe the blood flow field in heart chambers. However, affected by speckle noise, the E-PIV output vector fields in echocardiographic images contain a large number of wrong velocity vectors. To correct the wrong vectors, we proposed a new iterative algorithm that smooth and modify the E-PIV output vector fields. The method is based on E-PIV, hydrodynamics partial differential equation and anisotropic diffusion. It detects local blood flow trendency, smooths the flow fields and corrects the wrong vectors without blurring important characteristic of the blood flow. Experiments on artificially generated images and vivo echocardiographic images show that the proposed method can noticeable improve the accuracy of the flow fields.
AB - Echocardiographic particle image velocimetry (E-PIV) technology is commonly used to trace the contrast bubbles intravenous injected in order to describe the blood flow field in heart chambers. However, affected by speckle noise, the E-PIV output vector fields in echocardiographic images contain a large number of wrong velocity vectors. To correct the wrong vectors, we proposed a new iterative algorithm that smooth and modify the E-PIV output vector fields. The method is based on E-PIV, hydrodynamics partial differential equation and anisotropic diffusion. It detects local blood flow trendency, smooths the flow fields and corrects the wrong vectors without blurring important characteristic of the blood flow. Experiments on artificially generated images and vivo echocardiographic images show that the proposed method can noticeable improve the accuracy of the flow fields.
KW - anisotropic diffusion
KW - echocardiograph
KW - flow field modify
KW - hydrodynamics partial differential equation
KW - particle image velocimetry
UR - https://www.scopus.com/pages/publications/84862924180
U2 - 10.1109/BMEI.2011.6098258
DO - 10.1109/BMEI.2011.6098258
M3 - 会议稿件
AN - SCOPUS:84862924180
SN - 9781424493524
T3 - Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
SP - 52
EP - 55
BT - Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
PB - IEEE Computer Society
T2 - 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
Y2 - 15 October 2011 through 17 October 2011
ER -