Error propagation model for microscopic magnetic resonance elastography shear-wave images.Magnetic Resonance Imaging
AbstractMicroscopic magnetic resonance elastography is a high-resolution method for visualizing shear waves and assessing the biomechanical viscoelastic properties of small biological samples. In this work, we used error propagation to develop a simple analytical model that relates the signal-to-noise ratio of MR magnitude images to the variance in shear-wave maps collected using gradient-echo and spin-echo phase-contrast pulse sequences. Our model predicts results for shear-wave images in phantoms, which match the experimentally observed phase variance within 8%. This model can be used to optimize MR pulse sequences for elastography studies, as well as other phase-difference techniques in MRI.
Citation InformationShadi F. Othman, Xiaohong Joe Zhou, Huihui Xu, Thomas J. Royston, et al.. "Error propagation model for microscopic magnetic resonance elastography shear-wave images." Magnetic Resonance Imaging Vol. 25 Iss. 1 (2007) p. 94 - 100 ISSN: 0730-725X
Available at: http://works.bepress.com/shadi-othman/12/