publications by Gregg E. Trahey.


Papers Published

  1. McAleavey, S.A. and Nightingale, K.R. and Trahey, G.E., Estimates of echo correlation and measurement bias in acoustic radiation force impulse imaging, IEEE Trans. Ultrason. Ferroelectr. Freq. Control (USA), vol. 50 no. 6 (2003), pp. 631 - 41 [TUFFC.2003.1209550] .
    (last updated on 2007/04/13)

    Abstract:
    Acoustic radiation force impulse (ARFI) imaging is a novel imaging modality in which pulses from a diagnostic ultrasound scanner are used to displace tissue and track its motion. The region displaced has lateral and elevational dimensions of similar scale to the ultrasound beams used to track the motion. Therefore, there is a range of tissue displacements present within the tracking beam, leading to decorrelation of the echo signal. Expressions are derived for the expected value of the displacement estimate and the cross-correlation at the expected displacement. Numerical simulations confirm the analytical model

    Keywords:
    acoustic correlation;biological tissues;biomedical ultrasonics;decorrelation;echo;medical signal processing;ultrasonic imaging;