Comparison of two approaches for attenuation imaging using the spectral log difference method: Regularized inversion versus image filtering

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Attenuation imaging using spectral techniques such as the spectral log difference (SLD) method suffers from a severe trade-off between spatial resolution and estimation variance. Recently, the regularized spectral log difference (RSLD) method was proposed as a technique that extends such trade-off by incorporating spatial priors (i.e., total variation) in the inversion process. However, the reduction of the variance of attenuation images could also be accomplished by post-processing of the attenuation maps using noise reduction techniques. The main goal of this study is to determine which strategy (i.e., noise handling during or after the attenuation image reconstruction) provides attenuation maps of better quality, both with synthetic data and experimental data obtained from calibrated physical phantoms. The results suggest that the noise rejection mechanism of RSLD significantly outperforms post-processing SLD images by filtering, nearly doubling the contrast-to-noise ratio for comparable values of estimation bias.

Original languageEnglish
Title of host publicationMedical Imaging 2018
Subtitle of host publicationUltrasonic Imaging and Tomography
EditorsNeb Duric, Brett C. Byram
PublisherSPIE
ISBN (Electronic)9781510616493
DOIs
StatePublished - 2018
EventMedical Imaging 2018: Ultrasonic Imaging and Tomography - Houston, United States
Duration: 13 Feb 201815 Feb 2018

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume10580
ISSN (Print)1605-7422

Conference

ConferenceMedical Imaging 2018: Ultrasonic Imaging and Tomography
Country/TerritoryUnited States
CityHouston
Period13/02/1815/02/18

Keywords

  • Attenuation imaging
  • image denoising
  • regularization
  • spectral log difference
  • total variation

Fingerprint

Dive into the research topics of 'Comparison of two approaches for attenuation imaging using the spectral log difference method: Regularized inversion versus image filtering'. Together they form a unique fingerprint.

Cite this