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Synthetic aperture focusing for short-lag spatial coherence imaging.

Publication ,  Journal Article
Bottenus, N; Byram, BC; Dahl, JJ; Trahey, GE
Published in: IEEE transactions on ultrasonics, ferroelectrics, and frequency control
September 2013

It has been demonstrated that short-lag spatial coherence (SLSC) ultrasound imaging can provide improved speckle SNR and lesion CNR compared with conventional Bmode images, especially in the presence of noise and clutter. Application of the van Cittert-Zernike theorem predicts that coherence among the ultrasound echoes received across an array is reduced significantly away from the transmit focal depth, leading to a limited axial depth of field in SLSC images. Transmit focus throughout the field of view can be achieved using synthetic aperture methods to combine multiple transmit events into a single final image. A synthetic aperture can be formed with either focused or diverging transmit beams. We explore the application of these methods to form synthetically focused channel data to create SLSC images with an extended axial depth of field. An analytical expression of SLSC image brightness through depth is derived for the dynamic receive focus case. Experimental results in a phantom and in vivo are presented and compared with dynamic receive focused SLSC images, demonstrating improved SNR and CNR away from the transmit focus and an axial depth of field four to five times longer.

Duke Scholars

Published In

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

DOI

EISSN

1525-8955

ISSN

0885-3010

Publication Date

September 2013

Volume

60

Issue

9

Start / End Page

1816 / 1826

Related Subject Headings

  • Ultrasonography
  • Thyroid Gland
  • Sensitivity and Specificity
  • Reproducibility of Results
  • Phantoms, Imaging
  • Middle Aged
  • Male
  • Image Interpretation, Computer-Assisted
  • Image Enhancement
  • Humans
 

Citation

APA
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ICMJE
MLA
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Bottenus, N., Byram, B. C., Dahl, J. J., & Trahey, G. E. (2013). Synthetic aperture focusing for short-lag spatial coherence imaging. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 60(9), 1816–1826. https://doi.org/10.1109/tuffc.2013.2768
Bottenus, Nick, Brett C. Byram, Jeremy J. Dahl, and Gregg E. Trahey. “Synthetic aperture focusing for short-lag spatial coherence imaging.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 60, no. 9 (September 2013): 1816–26. https://doi.org/10.1109/tuffc.2013.2768.
Bottenus N, Byram BC, Dahl JJ, Trahey GE. Synthetic aperture focusing for short-lag spatial coherence imaging. IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 2013 Sep;60(9):1816–26.
Bottenus, Nick, et al. “Synthetic aperture focusing for short-lag spatial coherence imaging.IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 60, no. 9, Sept. 2013, pp. 1816–26. Epmc, doi:10.1109/tuffc.2013.2768.
Bottenus N, Byram BC, Dahl JJ, Trahey GE. Synthetic aperture focusing for short-lag spatial coherence imaging. IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 2013 Sep;60(9):1816–1826.

Published In

IEEE transactions on ultrasonics, ferroelectrics, and frequency control

DOI

EISSN

1525-8955

ISSN

0885-3010

Publication Date

September 2013

Volume

60

Issue

9

Start / End Page

1816 / 1826

Related Subject Headings

  • Ultrasonography
  • Thyroid Gland
  • Sensitivity and Specificity
  • Reproducibility of Results
  • Phantoms, Imaging
  • Middle Aged
  • Male
  • Image Interpretation, Computer-Assisted
  • Image Enhancement
  • Humans