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Ultrasonic tracking of acoustic radiation force-induced displacements in homogeneous media.

Publication ,  Journal Article
Palmeri, ML; McAleavey, SA; Trahey, GE; Nightingale, KR
Published in: IEEE transactions on ultrasonics, ferroelectrics, and frequency control
July 2006

The use of ultrasonic methods to track the tissue deformation generated by acoustic radiation force is subject to jitter and displacement underestimation errors, with displacement underestimation being primarily caused by lateral and elevation shearing within the point spread function (PSF) of the ultrasonic beam. Models have been developed using finite element methods and Field II, a linear acoustic field simulation package, to study the impact of focal configuration, tracking frequency, and material properties on the accuracy of ultrasonically tracking the tissue deformation generated by acoustic radiation force excitations. These models demonstrate that lateral and elevation shearing underneath the PSF of the tracking beam leads to displacement underestimation in the focal zone. Displacement underestimation can be reduced by using tracking beams that are narrower than the spatial extent of the displacement fields. Displacement underestimation and jitter decrease with time after excitation as shear wave propagation away from the region of excitation reduces shearing in the lateral and elevation dimensions. The use of higher tracking frequencies in broadband transducers, along with 2D focusing in the elevation dimension, will reduce jitter and improve displacement tracking accuracy. Relative displacement underestimation remains constant as a function of applied force, whereas jitter increases with applied force. Underdeveloped speckle (SNR < 1.91) leads to greater levels of jitter and peak displacement underestimation. Axial shearing is minimal over the tracking kernel lengths used in acoustic radiation force impulse imaging and thus does not impact displacement tracking.

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Published In

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

DOI

EISSN

1525-8955

ISSN

0885-3010

Publication Date

July 2006

Volume

53

Issue

7

Start / End Page

1300 / 1313

Related Subject Headings

  • Sensitivity and Specificity
  • Reproducibility of Results
  • Radiometry
  • Radiation Dosage
  • Physical Stimulation
  • Movement
  • Motion
  • Models, Biological
  • Information Storage and Retrieval
  • Imaging, Three-Dimensional
 

Citation

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Palmeri, M. L., McAleavey, S. A., Trahey, G. E., & Nightingale, K. R. (2006). Ultrasonic tracking of acoustic radiation force-induced displacements in homogeneous media. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 53(7), 1300–1313. https://doi.org/10.1109/tuffc.2006.1665078
Palmeri, Mark L., Stephen A. McAleavey, Gregg E. Trahey, and Kathryn R. Nightingale. “Ultrasonic tracking of acoustic radiation force-induced displacements in homogeneous media.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 53, no. 7 (July 2006): 1300–1313. https://doi.org/10.1109/tuffc.2006.1665078.
Palmeri ML, McAleavey SA, Trahey GE, Nightingale KR. Ultrasonic tracking of acoustic radiation force-induced displacements in homogeneous media. IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 2006 Jul;53(7):1300–13.
Palmeri, Mark L., et al. “Ultrasonic tracking of acoustic radiation force-induced displacements in homogeneous media.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 53, no. 7, July 2006, pp. 1300–13. Epmc, doi:10.1109/tuffc.2006.1665078.
Palmeri ML, McAleavey SA, Trahey GE, Nightingale KR. Ultrasonic tracking of acoustic radiation force-induced displacements in homogeneous media. IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 2006 Jul;53(7):1300–1313.

Published In

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

DOI

EISSN

1525-8955

ISSN

0885-3010

Publication Date

July 2006

Volume

53

Issue

7

Start / End Page

1300 / 1313

Related Subject Headings

  • Sensitivity and Specificity
  • Reproducibility of Results
  • Radiometry
  • Radiation Dosage
  • Physical Stimulation
  • Movement
  • Motion
  • Models, Biological
  • Information Storage and Retrieval
  • Imaging, Three-Dimensional