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Refraction correction in 3D transcranial ultrasound imaging.

Publication ,  Journal Article
Lindsey, BD; Smith, SW
Published in: Ultrasonic imaging
January 2014

We present the first correction of refraction in three-dimensional (3D) ultrasound imaging using an iterative approach that traces propagation paths through a two-layer planar tissue model, applying Snell's law in 3D. This approach is applied to real-time 3D transcranial ultrasound imaging by precomputing delays offline for several skull thicknesses, allowing the user to switch between three sets of delays for phased array imaging at the push of a button. Simulations indicate that refraction correction may be expected to increase sensitivity, reduce beam steering errors, and partially restore lost spatial resolution, with the greatest improvements occurring at the largest steering angles. Distorted images of cylindrical lesions were created by imaging through an acrylic plate in a tissue-mimicking phantom. As a result of correcting for refraction, lesions were restored to 93.6% of their original diameter in the lateral direction and 98.1% of their original shape along the long axis of the cylinders. In imaging two healthy volunteers, the mean brightness increased by 8.3% and showed no spatial dependency.

Duke Scholars

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

January 2014

Volume

36

Issue

1

Start / End Page

35 / 54

Related Subject Headings

  • Ultrasonics
  • Transducers
  • Phantoms, Imaging
  • Models, Biological
  • Imaging, Three-Dimensional
  • Image Processing, Computer-Assisted
  • Humans
  • Computer Simulation
  • Adult
  • Acoustics
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Lindsey, B. D., & Smith, S. W. (2014). Refraction correction in 3D transcranial ultrasound imaging. Ultrasonic Imaging, 36(1), 35–54. https://doi.org/10.1177/0161734613510287
Lindsey, Brooks D., and Stephen W. Smith. “Refraction correction in 3D transcranial ultrasound imaging.Ultrasonic Imaging 36, no. 1 (January 2014): 35–54. https://doi.org/10.1177/0161734613510287.
Lindsey BD, Smith SW. Refraction correction in 3D transcranial ultrasound imaging. Ultrasonic imaging. 2014 Jan;36(1):35–54.
Lindsey, Brooks D., and Stephen W. Smith. “Refraction correction in 3D transcranial ultrasound imaging.Ultrasonic Imaging, vol. 36, no. 1, Jan. 2014, pp. 35–54. Epmc, doi:10.1177/0161734613510287.
Lindsey BD, Smith SW. Refraction correction in 3D transcranial ultrasound imaging. Ultrasonic imaging. 2014 Jan;36(1):35–54.
Journal cover image

Published In

Ultrasonic imaging

DOI

EISSN

1096-0910

ISSN

0161-7346

Publication Date

January 2014

Volume

36

Issue

1

Start / End Page

35 / 54

Related Subject Headings

  • Ultrasonics
  • Transducers
  • Phantoms, Imaging
  • Models, Biological
  • Imaging, Three-Dimensional
  • Image Processing, Computer-Assisted
  • Humans
  • Computer Simulation
  • Adult
  • Acoustics