MR imaging of shear waves induced by moving needle

Q. C.C. Chan, G. Li, R. L. Ehman, R. C. Grimm, G. Cao, R. Li, E. S. Yang

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

Abstract

Magnetic Resonance Elastography (MRE) is a phase contrast-based method for observing shear wave propagation in a material to determine its stiffness. The objective of this study was to determine whether shear waves suitable for MRE can be induced using a moving acupuncture needle. Tissue-simulating bovine gel phantom and a 0.4mm diameter acupuncture needle were used in the experiment. The results showed that observable shear waves could be induced in the gel phantom by cyclic needle motion. The observed wavelength varied with excitation frequency, as expected. Generating shear waves using moving needles may be a useful tool to study the basic mechanism of acupuncture with MRE. Further study will be conducted to observe the wave motion in inhomogeneous media and acupuncture-induced effects in in-vivo studies.

Original languageEnglish (US)
Title of host publicationProceedings of the Second IASTED International Conference on Biomechanics
EditorsM.H. Hamza
Pages22-24
Number of pages3
StatePublished - Dec 1 2004
EventProceedings of the Second IASTED International Conference on Biomechanics - Honolulu, HI, United States
Duration: Aug 23 2004Aug 25 2004

Publication series

NameProceedings of the Second IASTED International Conference on Biomechanics

Other

OtherProceedings of the Second IASTED International Conference on Biomechanics
CountryUnited States
CityHonolulu, HI
Period8/23/048/25/04

Keywords

  • Acupuncture
  • MR Elastography
  • Shear wave
  • Stiffness

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Chan, Q. C. C., Li, G., Ehman, R. L., Grimm, R. C., Cao, G., Li, R., & Yang, E. S. (2004). MR imaging of shear waves induced by moving needle. In M. H. Hamza (Ed.), Proceedings of the Second IASTED International Conference on Biomechanics (pp. 22-24). [463-054] (Proceedings of the Second IASTED International Conference on Biomechanics).