Navigator echo based in-slice motion artifact suppression in ultrasound images based on synthetic aperture

A. E M El-Sharkawy, A. B M Youssef, Y. M. Kadah

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

Abstract

We propose two techniques for robust motion artifact suppression in ultrasound images based on what is called "navigator echoes". The navigator echo approach has been introduced and widely used in the area of magnetic resonance imaging where motion is detected along one of the image directions based on simple registration of one-dimensional projection of the image assuming rigid body motion. In ultrasound imaging, the same concept can be applied to correct for simple shifts (e.g., with linear array probes) or rotations (e.g, with convex array probes) along the width and depth direction. The first technique assumes a rigid body motion model. Hence, simple one-dimensional template matching can be used to obtain the motion parameters as in magnetic resonance imaging. Alternatively, the second technique considers a more general spatially-variant motion model. The motion parameters of this model can be obtained through localized optimization of an information theoretic criterion. The motion model parameters are then employed in the reconstruction thus providing images with substantially reduced artifacts. The proposed method was implemented on an experimental ultrasound system in which each line is obtained from 2-4 acquisitions from interleaved frames. The motion models are compared and their practical implementation for clinical systems is evaluated.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsM.F. Insana, K.K. Shung
Pages445-449
Number of pages5
Volume4325
DOIs
StatePublished - 2001
Externally publishedYes
EventMedical Imaging 2001: Ultrasonic Imaging and Signal Processing - San Diego, CA, United States
Duration: Feb 21 2001Feb 22 2001

Other

OtherMedical Imaging 2001: Ultrasonic Imaging and Signal Processing
CountryUnited States
CitySan Diego, CA
Period2/21/012/22/01

Fingerprint

navigators
Synthetic apertures
synthetic apertures
artifacts
echoes
Ultrasonics
retarding
Magnetic resonance
Imaging techniques
Template matching
rigid structures
magnetic resonance
probes
linear arrays
acquisition
templates
projection

Keywords

  • Information theoretic image enhancement
  • Motion artifact
  • Navigator echo
  • Synthetic aperture

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

El-Sharkawy, A. E. M., Youssef, A. B. M., & Kadah, Y. M. (2001). Navigator echo based in-slice motion artifact suppression in ultrasound images based on synthetic aperture. In M. F. Insana, & K. K. Shung (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4325, pp. 445-449) https://doi.org/10.1117/12.428223

Navigator echo based in-slice motion artifact suppression in ultrasound images based on synthetic aperture. / El-Sharkawy, A. E M; Youssef, A. B M; Kadah, Y. M.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / M.F. Insana; K.K. Shung. Vol. 4325 2001. p. 445-449.

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

El-Sharkawy, AEM, Youssef, ABM & Kadah, YM 2001, Navigator echo based in-slice motion artifact suppression in ultrasound images based on synthetic aperture. in MF Insana & KK Shung (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4325, pp. 445-449, Medical Imaging 2001: Ultrasonic Imaging and Signal Processing, San Diego, CA, United States, 2/21/01. https://doi.org/10.1117/12.428223
El-Sharkawy AEM, Youssef ABM, Kadah YM. Navigator echo based in-slice motion artifact suppression in ultrasound images based on synthetic aperture. In Insana MF, Shung KK, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4325. 2001. p. 445-449 https://doi.org/10.1117/12.428223
El-Sharkawy, A. E M ; Youssef, A. B M ; Kadah, Y. M. / Navigator echo based in-slice motion artifact suppression in ultrasound images based on synthetic aperture. Proceedings of SPIE - The International Society for Optical Engineering. editor / M.F. Insana ; K.K. Shung. Vol. 4325 2001. pp. 445-449
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