Pixel-based ultrasound image reconstruction: Impact of grid size on signal frequency content

Mahdi Bayat, Alireza Nabavizadeh, Azra Alizad, Mostafa Fatemi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effect of grid size on the frequency content of the pixel-based image reconstruction algorithms is discussed. It is shown that coarse grid sizes result in simultaneous decimation and down conversion of the axial data. Results of simulations and phantom studies are presented which show the amount of decimation and predicted frequency shifts. The effect of this frequency shift and down-sampling is then studied in terms of a bias in the displacement when narrow-band algorithms are used for speckle tracking.

Original languageEnglish (US)
Title of host publication2015 IEEE International Ultrasonics Symposium, IUS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479981823
DOIs
StatePublished - Nov 13 2015
EventIEEE International Ultrasonics Symposium, IUS 2015 - Taipei, Taiwan, Province of China
Duration: Oct 21 2015Oct 24 2015

Other

OtherIEEE International Ultrasonics Symposium, IUS 2015
CountryTaiwan, Province of China
CityTaipei
Period10/21/1510/24/15

Keywords

  • pixel-based imaging
  • plane wave imaging
  • speckle tracking
  • Synthetic aperture

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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    Bayat, M., Nabavizadeh, A., Alizad, A., & Fatemi, M. (2015). Pixel-based ultrasound image reconstruction: Impact of grid size on signal frequency content. In 2015 IEEE International Ultrasonics Symposium, IUS 2015 [7329429] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ULTSYM.2015.0383