MR acoustic radiation force imaging: In vivo comparison to ultrasound motion tracking

Yuexi Huang, Laura Curiel, Aleksandra Kukic, Donald B. Plewes, Rajiv Chopra, Kullervo Hynynen

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

MR acoustic radiation force (ARF) imaging was developed for measuring tissue elastic properties using focused ultrasound to deliver a localized tissue motion. In this study, an imaging ultrasound transducer was mounted on the focused ultrasound transducer and ultrasound motion tracking was performed simultaneously to MR ARF imaging to validate the measurement results. In vivo studies on rabbit thigh muscle were performed and results showed a general agreement between the two modalities (slope=0.96 and R2 =0.67). The temporal information by the ultrasound measurement indicates that the parameters in MR ARF imaging should be optimized according to the tissue type, acoustic power, and envelope and frequency of the ARF modulation.

Original languageEnglish (US)
Pages (from-to)2016-2020
Number of pages5
JournalMedical physics
Volume36
Issue number6
DOIs
StatePublished - 2009

Keywords

  • Acoustic radiation force
  • Elastography
  • Focused ultrasound
  • Local harmonic motion
  • Tissue displacement

ASJC Scopus subject areas

  • Biophysics
  • Radiology Nuclear Medicine and imaging

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