US 11,921,177 B2
Magnetic field (BO) artifact reduction throught active shimming
Arne Reykowski, Newberry, FL (US); Alton Keel, Gainesville, FL (US); Timothy Ortiz, Alachua, FL (US); Scott King, Gainesville, FL (US); Rodrigo Calderon Rico, Newberry, FL (US); and Paul Franz Redder, Newberry, FL (US)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 17/773,852
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Oct. 27, 2020, PCT No. PCT/EP2020/080139
§ 371(c)(1), (2) Date May 3, 2022,
PCT Pub. No. WO2021/089366, PCT Pub. Date May 14, 2021.
Claims priority of provisional application 62/930,108, filed on Nov. 4, 2019.
Prior Publication US 2022/0397620 A1, Dec. 15, 2022
Int. Cl. G01R 33/3875 (2006.01); G01R 33/389 (2006.01)
CPC G01R 33/3875 (2013.01) [G01R 33/389 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
an electronic component;
at least one electrically conductive loop or winding)-disposed around the electronic component; and
an electronic controller configured to:
determine an orientation of the electronic component with respect to a direction of an ambient magnetic field, from a received ambient magnetic field measurement signal;
determine at least one magnetic field shim current based on the determined orientation of the electronic component with respect to the direction of the ambient magnetic field, and a calibration table which maps various orientations of the electronic component with respect to the direction of the ambient magnetic field, to corresponding magnetic field shim currents; and
energize the at least one electrically conductive loop or winding to flow the determined at least one magnetic field shim current.