Electromagnetic shielded Lorentz coil actuator allows using the magnetic field of the MRI scanner to induce arbitrary elastic waves in the tissue in a cost-effective way. We developed a Lorentz coil actuator for the liver magnetic resonance elastography (MRE) for providing a larger wave coverage area, where the Lorentz coil is placed outside the imaging area by the use of an additional end-effector. Initial testing for phantom showed an excellent agreement with the reported elasticity, while the liver elasticity study provided promising results in detecting cirrhosis and hepatitis C virus.
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