Abstract #2524
Three dimensional three parameter direct inversion MR elastography of incompressible transverse isotropic media: Application to in vivo soleus muscle
Jing Guo 1 , Sebastian Hirsch 1 , Jrgen Braun 2 , and Ingolf Sack 3
1
Radiology, Charit - Universittsmedizin
Berlin, Berlin, Berlin, Germany,
2
Department
of Medical Informatics, Charit - Universittsmedizin
Berlin, Berlin, Germany,
3
Radiology, Charit -
Universittsmedizin Berlin, Berlin, Germany
An anisotropic MR elastography method is introduced
which relies on shear fields in incompressible
transversely-isotropic media. The method provides three
independent moduli,
μ
12
,
μ
13
and
E
3
,
the shear moduli in the planes of isotropy and symmetry
as well as the Young's modulus parallel to the fiber
axis, respectively. The method is demonstrated on the
soleus in ten healthy volunteers and reveals that 1)
E
3
>
μ
13
>
μ
12
and
2) elasticity parameters along the muscle fiber axis are
higher in the right leg compared to the left leg which
is most likely resulting from the right leg dominance of
soleus function in our group.
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