Biomedical Engineering Reference
In-Depth Information
Fig. 5.17 a Geometric separation of fat and muscle tissue, b hypothesis of constant ''sectional
forces'' (indenter force)
Fig. 5.18 a Separation of force-displacement data of the gluteal fat-muscle-tissue compound of
a 35 year old mal volunteer at steady state into single components, i.e. skin/fat and muscle tissue,
b force-displacement data at steady state elasticity of 4 female (F1-F4) and 4 male (M1-M4)
volunteers
gluteus, a turbo spin echo sequence was employed with a TR of 5,000 ms and a TE
of 98 ms. The process of MR-imaging and indentation testing were combined so
that after each deformation step outside the MRI coil, the table was slid into the
MRI where the buttock was scanned.
5.2.2.3 Separating Procedure (Fat and Muscle)
In the gluteal region, the presented approach assumed a reduction of the complex
tissue compound to a two-component model consisting of a skin/fat layer and a
muscle layer, cf. Figs.
5.11
and
5.16
a. Since the in vivo indentation experiments
provided one force-displacement curve and termination points representing the
tissue compound, cf. Fig.
5.18
d, the separation of skin/fat and muscle properties
