Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1997-12-31
2000-09-12
Smith, Ruth S.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
600414, 600417, 606130, A61B 505
Patent
active
061190322
ABSTRACT:
The invention relates to MR guided intervention. For biopsies and similar interventions the challenge is to align a needle or other interventional device along an anticipated trajectory which hits a target point but does not intersect sensitive structures between the target and the surface. The invention includes the following method in order to position an MR visible device: collection of pre-intervention MR-images, establishing of an anticipated trajectory and an entry point by imaging of the MR-visible device and a thick slab positioned parallel to the surface and displaying of the MR localizer in the MR-image of the slab and moving the MR visible localizer to the entry point, imaging of two mutual orthogonal slices passing through the anticipated trajectory between the entry point and the target point and establishing an angle of entry by using for example a MR-visible pen and a targeting device.
REFERENCES:
patent: 5517990 (1996-05-01), Kalfas et al.
patent: 5647361 (1997-07-01), Damadian
patent: 5682890 (1997-11-01), Kormos et al.
Martin Alastair J.
Van Vaals Johannes J.
Renfrew Dwight
Smith Ruth S.
U.S. Philips Corporation
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