Invention Grant
- Patent Title: Method and apparatus for improved efficiency of non-cartesian imaging using accelerated calibration scan for k-space shift correction
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Application No.: US17321588Application Date: 2021-05-17
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Publication No.: US11480639B1Publication Date: 2022-10-25
- Inventor: Xiaodong Zhong , Vibhas S. Deshpande , Marcel Dominik Nickel , Fei Han
- Applicant: Siemens Healthcare GmbH
- Applicant Address: DE Erlangen
- Assignee: Siemens Healthcare GmbH
- Current Assignee: Siemens Healthcare GmbH
- Current Assignee Address: DE Erlangen
- Main IPC: G01R33/48
- IPC: G01R33/48 ; G01R33/58

Abstract:
A system and method for performing accelerated k-space shift correction calibration scans for non-Cartesian trajectories is provided. The method can include applying an MRI sequence, performing a calibration scan based on the MRI sequence using the non-Cartesian trajectory to acquire k-space shift data, wherein one or more partitions are skipped during the calibration scan, interpolating the skipped one or more partitions using the k-space shift data from adjacent partitions, and calibrating the MRI system using the k-space shift data and the interpolated k-space shift data. In some embodiments, an acceleration factor Acc can be defined and the calibration scan acquires k-space shift data for only one partition in every Acc partitions.
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