US 12,078,696 B2
Silent calibration for magnetic resonance imaging
Xiaoli Zhao, New Berlin, WI (US); Kang Wang, Sussex, WI (US); Hua Li, Sussex, WI (US); Zhenghui Zhang, Buffalo Grove, IL (US); Florian Wiesinger, Freising (DE); Ty A. Cashen, Madison, WI (US); and Rolf Schulte, Freising (DE)
Assigned to GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed by GE Precision Healthcare LLC, Wauwatosa, WI (US)
Filed on Oct. 6, 2022, as Appl. No. 17/938,465.
Prior Publication US 2024/0118356 A1, Apr. 11, 2024
Int. Cl. G01V 3/00 (2006.01); A61B 5/055 (2006.01); G01R 33/20 (2006.01); G01R 33/561 (2006.01)
CPC G01R 33/20 (2013.01) [A61B 5/055 (2013.01); G01R 33/5611 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for generating an image of an object with a magnetic resonance imaging (MRI) system, the method comprising:
performing by the MRI system a calibration scan of the object with a spiral zero echo time (ZTE) radial sampling scheme to obtain a plurality of calibration k-spaces, where endpoints of calibration k-space lines in each calibration k-space follow a spiral path;
obtaining by the MRI system a plurality of calibration parameters from the plurality of calibration k-spaces;
performing by the MRI system a second scan of the object to acquire the MR image data;
generating by the MRI system the image of the object based on the plurality of calibration parameters and the MR image data; and
displaying the image of the object on a display;
wherein gradient waveforms for the MRI system increase or decrease in small steps between one repetition time to another repetition time.