Elijah Van Houten1, Cyril Tous2,3, Alexandre Jodoin4, Matthew McGarry5, Philip Bayly6, Keith Paulsen5,7, Curtis Johnson8, and Nathalie Bureau2,4
1Mechanical Engineering, Université de Sherbroke, Sherbrooke, QC, Canada, 2Centre de recherche du Centre hospitalier de l’Université de Montréal, Montréal, QC, Canada, 3Université de Montréal, Montréal, QC, Canada, 4Department of Radiology, Centre hospitalier de l’Université de Montréal, Montréal, QC, Canada, 5Thayer School of Engineering, Dartmouth College, Hanover, NH, United States, 6Department of Mechanical Engineering & Materials Science, Washington University in St. Louis, St. Louis, MO, United States, 7Dartmouth-Hitchcock Medical Center, Lebanon, NH, United States, 8Department of Biomedical Engineering, University of Delaware, Newark, DE, United States
1Mechanical Engineering, Université de Sherbroke, Sherbrooke, QC, Canada, 2Centre de recherche du Centre hospitalier de l’Université de Montréal, Montréal, QC, Canada, 3Université de Montréal, Montréal, QC, Canada, 4Department of Radiology, Centre hospitalier de l’Université de Montréal, Montréal, QC, Canada, 5Thayer School of Engineering, Dartmouth College, Hanover, NH, United States, 6Department of Mechanical Engineering & Materials Science, Washington University in St. Louis, St. Louis, MO, United States, 7Dartmouth-Hitchcock Medical Center, Lebanon, NH, United States, 8Department of Biomedical Engineering, University of Delaware, Newark, DE, United States
MR elastography imaging of the anisotropic properties of the supraspinatus
muscle shows stable mechanical stiffness and anisotropy values across repeat
imaging exams. The quantitative imaging values agree with independently
published wavelength-based estimates.
Figure 1: Transversely isotropic (top row) and isotropic (bottom row) NLI-MRE
reconstructions from a healthy volunteer. DTI fiber orientations are indicated
by black lines. The results show the storage modulus ($$$\mu_R$$$)
and loss modulus ($$$\mu_I$$$)
distributions for the two reconstructions, as well as the distribution of the
OSS-SNR. (Note that the color scales differ between isotropic and anisotropic
reconstruction images.)
Figure 2: Transversely
isotropic (top row) and isotropic (bottom row) NLI-MRE reconstructions from a
repeat imaging exam of the same healthy volunteer shown in Figure 1. DTI fiber
orientations are indicated by black lines. The results show the storage modulus
($$$\mu_R$$$)
and loss modulus ($$$\mu_I$$$)
distributions for the two reconstructions, as well as the distribution of the
OSS-SNR. (Note that the color scales differ between isotropic and anisotropic
reconstruction images.)
