Polyvalor, Limited Partnership

Val-chum, Limited Partnership

Gilles Beaudoin

Sylvain Martel

Jean-Baptiste Mathieu

L'Hocine Yahia

Gilles Soulez

Ouajdi Felfoul

The present invention relates to a MR tracking method and device. More specifically, the present invention relates to a magnetic resonance tracking method and device, using a magnetic-susceptible object. A magnetic iso-surface induced by the object is selectively excited with a corresponding frequency offset; the magnetic iso-surface is then projected on three axes of a k-space, from which projections the spatial position of the object is calculated.

MR-tracking based on magnetic signature selective excitation

A magnetic resonance imager (MRI) controllably propels at least one magnetic field responsive body within a subject. The MRI comprises a bore magnet producing an intense magnetic field sufficient to magnetically saturate the magnetic field responsive body. A magnetic field gradient generator is configured to apply variable magnetic gradients to at least a portion of the subject containing the magnetically-saturated body. A controller instructs the magnetic field gradient generator to acquire image data of the magnetically-saturated body within the subject and to apply a calculated magnetic gradient that will propel the magnetically-saturated body towards a target location in the subject. A tracking unit of the MRI provides position feedback information of the magnetically-saturated body within the subject.

Method and system for propelling and controlling displacement of a microrobot in a blood vessel

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Saint-Lambert, Canada

Gilles Beaudoin