Invasive device for use in a magnetic resonance imaging apparatu

Details Invasive device for use in a magnetic resonance imaging apparatu Invasive device for use in a magnetic resonance imaging apparatu

1997-08-18

1999-06-29

Smith, Ruth S.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600423, 600424, A61B 5055

Patent

active

059161620

ABSTRACT:
An invasive device which is intended to cooperate with a magnetic resonance imaging apparatus is provided with an RF coil which is situated near a distal part of the invasive device. The RF coil is used so as to visualize the position of a distal end of the invasive device, introduced into an object, in an image of the object. Current induced by an RF field to be generated by the magnetic resonance imaging apparatus develops heat in the electric connection between the RF coil and a control unit, which may be annoying to a patient. In order to counteract the development of heat in the invasive device, the invasive device is provided with a hollow carrier. The electric connection extends through said carrier which is provided with an electrically conductive shield with an additional resistance.

REFERENCES:
patent: 4841248 (1989-06-01), Mehdizadeh et al.
patent: 5069213 (1991-12-01), Polczynski
patent: 5318025 (1994-06-01), Dumoulin et al.

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