Speckle tracking is widely used for elastography in ultrasound imaging. Traditional speckle tracking algorithms accurately detect axial motion, but have difficulty detecting lateral motion, even with a significant computational burden. A modified cross correlation algorithm with a synthetic lateral phase has been developed to reduce the computation time, allowing for real-time implementation. The modified algorithm yields results comparable to those of existing lateral displacement tracking methods. With the modified method, lateral movement in the micrometer range can be successfully tracked while reducing computational time by more than a factor of two. This algorithm will serve as a useful tool to further advance ultrasound elastography.
Bibliographical noteFunding Information:
This research was supported by the Leading Foreign Research Institute Recruitment Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) (2011-00263), by the R & D program of Ministry of Knowledge and Economy (MKE) (10033702, Ultra high speed Parallel Beam-forming & Signal Processing), and by the Korea Health technology R&D Project, Ministry of Health & Welfare, Republic of Korea (A102062).
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)