Title :
Navigator echo motion artifact suppression in synthetic aperture ultrasound imaging
Author :
Kadah, Yasser M. ; El-Sharkawy, Abd El-Monem ; Youssef, Abou-Bakr M.
Author_Institution :
Biomed. Eng. Dept., Cairo Univ., Giza, Egypt
Abstract :
We develop a simple yet effective technique for motion artifact suppression in ultrasound images reconstructed from multiple acquisitions. Assuming a rigid-body motion model, a navigator echo is computed for each acquisition and then registered to estimate the motion in between acquisitions. By detecting this motion, it is possible to compensate for it in the reconstruction step to obtain images that are free of lateral motion artifacts. The theory and practical implementation details are described and the performance is analyzed using computer simulations as well as real data. The results indicate the potential of the new method for real-time implementation in lower cost ultrasound imaging systems.
Keywords :
biomedical ultrasonics; image motion analysis; image reconstruction; image registration; medical image processing; image reconstruction; image registration; navigator echo motion artifact suppression; rigid-body motion model; synthetic aperture ultrasound imaging; Apertures; Biomedical engineering; Costs; Image reconstruction; Image resolution; Motion estimation; Navigation; Phased arrays; Signal resolution; Ultrasonic imaging; Information theoretic image enhancement; motion artifact; navigator echo; synthetic aperture; Algorithms; Artifacts; Image Enhancement; Image Interpretation, Computer-Assisted; Movement; Pattern Recognition, Automated; Phantoms, Imaging; Reproducibility of Results; Sensitivity and Specificity; Subtraction Technique; Ultrasonography;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2004.836501
