Abstract #4872
Torque and Translational force Considerations for ferromagnetic shells in MR Imaging
Vahid Ghodrati 1 and Abbas N Moghaddam 1,2
1
BME, Tehran Polytechnic, Tehran, Tehran,
Iran,
2
School
of Cognitive Sciences, Institute for Studies in
Theoretical Physics and Mathematics, Tehran, Iran
In some injuries, such as those happen in the battle
field, part of shells or foreign objects that may
include magnetic materials remain in victims body. In
this research we calculate the torque and translational
force for specific ferromagnetic objects. Translational
force reaches its maximum value near the opening to the
bore. Near the isocenter, however, there is no
translational force acting on the ferromagnetic
spherical object. For a long cylindrical shell, such as
a niddle, or for a flat cylindrical shell, like a disk,
the torque inside the bore is quite significant. Torque
can be managed by a prior knowledge about the object
orientation from an auxiliary imaging modality.
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