Abstract
In the Magnetic Resonance Elastography experiment we consider a harmonically oscillating mechanical force applied to the boundary surface of a phantom and synchronized with the motion encoding gradient. The phantom is symmetric in the direction of the applied mechanical force and the vector component in that direction decouples from the other components and satisfies a Helmholtz equation. We present a local inversion method to determine the shear wave speed that: (1) treats the phase and amplitude of the data differently; (2) computes derivatives of the data by using statistically justified filtering; and (3) varies filters according to SNR. We test our methods on data from Mayo Clinic and recover the position and stiffness of a 3mm diameter inclusion.
| Original language | English |
|---|---|
| Title of host publication | 2006 3rd IEEE International Symposium on Biomedical Imaging |
| Subtitle of host publication | From Nano to Macro - Proceedings |
| Pages | 960-963 |
| Number of pages | 4 |
| Volume | 2006 |
| Publication status | Published - 17 Nov 2006 |
| Externally published | Yes |
| Event | 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Arlington, VA, United States Duration: 6 Apr 2006 → 9 Apr 2006 |
Other
| Other | 2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro |
|---|---|
| Country | United States |
| City | Arlington, VA |
| Period | 6/4/06 → 9/4/06 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Variance controlled shear stiffness images for MRE data. / Mclaughlin, J.; Renzi, Paul; Yoon, J. R.; Ehman, R. L.; Manduca, A.
2006 3rd IEEE International Symposium on Biomedical Imaging: From Nano to Macro - Proceedings. Vol. 2006 2006. p. 960-963 162579.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Variance controlled shear stiffness images for MRE data
AU - Mclaughlin, J.
AU - Renzi, Paul
AU - Yoon, J. R.
AU - Ehman, R. L.
AU - Manduca, A.
PY - 2006/11/17
Y1 - 2006/11/17
N2 - In the Magnetic Resonance Elastography experiment we consider a harmonically oscillating mechanical force applied to the boundary surface of a phantom and synchronized with the motion encoding gradient. The phantom is symmetric in the direction of the applied mechanical force and the vector component in that direction decouples from the other components and satisfies a Helmholtz equation. We present a local inversion method to determine the shear wave speed that: (1) treats the phase and amplitude of the data differently; (2) computes derivatives of the data by using statistically justified filtering; and (3) varies filters according to SNR. We test our methods on data from Mayo Clinic and recover the position and stiffness of a 3mm diameter inclusion.
AB - In the Magnetic Resonance Elastography experiment we consider a harmonically oscillating mechanical force applied to the boundary surface of a phantom and synchronized with the motion encoding gradient. The phantom is symmetric in the direction of the applied mechanical force and the vector component in that direction decouples from the other components and satisfies a Helmholtz equation. We present a local inversion method to determine the shear wave speed that: (1) treats the phase and amplitude of the data differently; (2) computes derivatives of the data by using statistically justified filtering; and (3) varies filters according to SNR. We test our methods on data from Mayo Clinic and recover the position and stiffness of a 3mm diameter inclusion.
UR - http://www.scopus.com/inward/record.url?scp=33746571820&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746571820&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:33746571820
SN - 0780395778
SN - 9780780395770
VL - 2006
SP - 960
EP - 963
BT - 2006 3rd IEEE International Symposium on Biomedical Imaging
ER -