US 12,453,520 B2
Systems and methods for CT detector calibration using a wire phantom
Björn Cederström, Stockholm (SE); Changlyong Kim, Waukesha, WI (US); Jiayin Ling, Waukesha, WI (US); Ronald G. Kulas, Waukesha, WI (US); Jingyi Liang, Waukesha, WI (US); and Mark Adamak, Waukesha, WI (US)
Assigned to GE PRECISION HEALTHCARE LLC, Wauwatosa, WI (US)
Filed by GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed on May 8, 2023, as Appl. No. 18/313,820.
Prior Publication US 2024/0374223 A1, Nov. 14, 2024
Int. Cl. A61B 6/03 (2006.01); A61B 6/58 (2024.01); G01N 23/046 (2018.01)
CPC A61B 6/032 (2013.01) [A61B 6/583 (2013.01); G01N 23/046 (2013.01); G01N 2223/3035 (2013.01); G01N 2223/419 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a computed tomography (CT) system, comprising:
during a calibration of the CT system:
measuring a position of a detector element of a detector array of the CT system with respect to a wire of a wire phantom coupled to a table of the CT system, during a rotational scan performed using the CT system; and
storing the measured position of the detector element with respect to the wire in a non-transitory memory of the CT system; and
during a subsequent scan performed on a subject using the CT system:
applying the measured position of the detector element with respect to the wire rather than a design target position of the detector element during reconstruction of an image from projection data acquired via the CT system; and
displaying the reconstructed image on a display device of the CT system.