Contrast-enhanced ultrasound imaging using pulse inversion spectral deconvolution

Mawia Khairalseed, Ipek Oezdemir, Kenneth Hoyt

Research output: Contribution to journalArticle

Abstract

A contrast-enhanced ultrasound (CEUS) imaging approach, termed pulse inversion spectral deconvolution (PISD), is introduced. The approach uses two Gaussian-weighted Hermite polynomials to form two inverted pulse sequences. The two inversed pulses are then used to filter ultrasound (US) backscattered data and discrimination of the linear and nonlinear signal components. A research US scanner equipped with a linear array transducer was used for data acquisition. The receive data from all channels are shaped using plane wave imaging beamforming with angular compounding (from one to nine angles). In vitro data was collected with a tissue mimicking flow phantom perfused with an US contrast agent using PISD and traditional nonlinear (NLI) US imaging as comparison. The role of imaging frequency (between 4.5 and 6.25 MHz) and mechanical index (from 0.1 to 0.3) were evaluated. Preliminary in vivo data was collected in the hindlimb of three healthy mice. Preliminary experimental findings indicate that the PISD contrast-to-tissue ratio was improved nearly ten times compared to the NLI US imaging approach. Also, the spatial resolution was improved due to the effect of deconvolution and spatial angular compounding. Overall, PISD is a promising postprocessing technique for real-time CEUS imaging.

Original languageEnglish (US)
Pages (from-to)2466-2474
Number of pages9
JournalJournal of the Acoustical Society of America
Volume146
Issue number4
DOIs
StatePublished - Oct 1 2019

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inversions
pulses
compounding
beamforming
linear arrays
scanners
data acquisition
mice
discrimination
Ultrasound
Deconvolution
Inversion
Spectrality
Pulse
Imaging
transducers
polynomials
plane waves
spatial resolution
filters

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

Contrast-enhanced ultrasound imaging using pulse inversion spectral deconvolution. / Khairalseed, Mawia; Oezdemir, Ipek; Hoyt, Kenneth.

In: Journal of the Acoustical Society of America, Vol. 146, No. 4, 01.10.2019, p. 2466-2474.

Research output: Contribution to journalArticle

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