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MR imaging of shear waves generated by focused ultrasound
Author(s) -
Wu Tao,
Felmlee Joel P.,
Greenleaf James F.,
Riederer Stephen J.,
Ehman Richard L.
Publication year - 2000
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/(sici)1522-2594(200001)43:1<111::aid-mrm13>3.0.co;2-d
Subject(s) - magnetic resonance elastography , ultrasound , shear waves , materials science , nuclear magnetic resonance , elastography , magnetic resonance imaging , shear (geology) , shear modulus , displacement (psychology) , acoustics , biomedical engineering , optics , physics , radiology , medicine , composite material , psychology , psychotherapist
This study has shown that magnetic resonance elastography (MRE) can detect shear waves excited by focused ultrasound (FUS) in both gel phantoms and ex vivo muscle. Good agreement was shown between the shear modulus measured from MRE images generated using FUS and that using previously reported MRE techniques. The shear wave displacement amplitude at the FUS focus was studied and found to be proportional with both FUS ultrasonic pulse intensity and the FUS modulation pulse period over the range tested. Magn Reson Med 43:111–115, 2000. © 2000 Wiley‐Liss, Inc.