A novel motion compensation algorithm for acoustic radiation force elastography

• Published in: IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2008-05, Vol.55 (5), p.1095-1111
• Main Authors: Fahey, B.J., Hsu, S.J., Trahey, G.E.
• Format: Article
• Language: English
• Subjects: Acoustic imaging; Acoustics; Algorithms; Biological and medical sciences; Biomedical materials; Biomedical measurements; Biomedical monitoring; Elasticity; Elasticity Imaging Techniques - methods; Exact sciences and technology; Filters; Fundamental areas of phenomenology (including applications); Image Enhancement - methods; Image Interpretation, Computer-Assisted - methods; Imaging; In vivo; Investigative techniques, diagnostic techniques (general aspects); Linear acoustics; Magnetic resonance imaging; Mathematical analysis; Mathematical models; Medical sciences; Miscellaneous. Technology; Motion; Motion compensation; Motion measurement; Physics; Structural acoustics and vibration; Surgical implants; Ultrasonic imaging; Ultrasonic investigative techniques
• ISSN: 0885-3010; 1525-8955
• DOI: 10.1109/TUFFC.2008.762

A novel method of physiological motion compensation for use with radiation force elasticity imaging has been developed. The method utilizes a priori information from finite element method models of the response of soft tissue to impulsive radiation force to isolate physiological motion artifacts from radiation force-induced displacement fields. The new algorithm is evaluated in a series of clinically realistic imaging scenarios, and its performance is compared to that achieved with previously described motion compensation algorithms. Though not without limitations, the new model-based motion compensation algorithm performs favorably in many circumstances and may be a logical choice for use with in vivo abdominal imaging.