Torque and Translational Force Estimation for Ferromagnetic Objects: the Saturation Effect
Vahid Ghodrati 1 and Abbas Nasiraei Moghaddam 1,2
BME, Amirkabir University of Technology
(Tehran Polytechnic), Tehran, Tehran, Iran,
of Cognitive Sciences, Institute for Research in
Fundamental Sciences (IPM), Tehran, Iran
Ferromagnetic objects in the MR-environment experienced
linear magnetic region or saturation region. almost
ferromagnetic objects placed in the saturation region in
the commercial MR-scanners. Therefore, it is necessary
to considered saturation region for these objects to
have a better estimation of the torque and force that
acted on ferromagnetic objects. Here, the approximated
strength for the magnetic field that can be saturated
the almost ferromagnetic objects will be presented.
Also, it will show that just by using the linear region,
the approximation of force will be 1.5 times
overestimated in comparison by considering of real
states for these objects.
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