St. Jude Medical International Holding S.a.r.l.

St. Jude Medical International Holdings S.a R. L.

Shay Levi

Alon Izmirli

Eitan Oren

Adrian Herscovici

Guy Hevel

Scott Meyerson

Eric Betzler

Roie Shlomovitz

Nir Ben Dor

Charles Bryan Byrd

Adam C Fischbach

Shlomo Hoory

Itai Winkler

Charles B Byrd

A method for detecting and correcting for magnetic field distortions within a magnetic field used for medical magnetic localization systems may include a first set of one or more signals is indicative of the magnetic field sensed by each of the sensor coils within the metal distortion detection fixture at a first time received from the metal distortion detection fixture. A first magnitude value of the combined signals is determined. A second set of one or more signals is indicative of the magnetic field sensed by each of the sensor coils at a second time is received and a second magnitude value of the combined signals is determined. A magnetic shift in the magnetic field between the first and second magnitude values is determined. The magnetic shift is compared to a threshold shift amount indicative of a magnetic distortion in the magnetic field.

Magnetic field distortion detection and correction in a magnetic localization system

A registration fixture or plate is configured for use with a medical imaging system. The registration fixture may be an optical magnetic registration plate including a plurality of fiducial markers in arranged in a predefined unique pattern. The pattern can be unambiguously detected on 2D image of the plate produced by the medical imaging system. Association of the 2D imaged pattern of fiducial markers with the actual 3D pattern on the optical magnetic registration plate allows for accurate calculation of projection matrices and co-registration of the 3D and 2D coordinate systems.

Apparatus for fiducial-association as part of extracting projection parameters relative to a 3D coordinate system

Aspects of the present disclosure are directed to systems, apparatuses, and methods for detecting and correcting for magnetic field distortions within a magnetic field used for medical magnetic localization systems.

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Kiryat Ata, Israel

Shay Levi