Invention Grant
- Patent Title: Magnetic resonance imaging using additional gradient pulses
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Application No.: US16665304Application Date: 2019-10-28
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Publication No.: US10935618B2Publication Date: 2021-03-02
- Inventor: Thomas Beck , Daniel Polak
- Applicant: Siemens Healthcare GmbH
- Applicant Address: DE Erlangen
- Assignee: Siemens Healthcare GmbH
- Current Assignee: Siemens Healthcare GmbH
- Current Assignee Address: DE Erlangen
- Agency: Schiff Hardin LLP
- Priority: DE102018218471.2 20181029
- Main IPC: G01R33/54
- IPC: G01R33/54 ; G01R33/48 ; G01R33/483 ; G01R33/561 ; G01R33/58

Abstract:
Method for MR imaging of an acquisition region during a patient examination. In order to determine a point spread function, in a prior measurement for each of additional gradient output directions, the method includes choosing, in the acquisition region, a slice lying outside of an isocenter of the MR device, which slice extends in a plane perpendicular to the additional gradient output direction under consideration; following a respective slice-selective excitation of the selected slice, acquiring first calibration data using the additional gradient pulse of the additional gradient output direction under consideration, and acquiring second calibration data omitting the additional gradient pulse in each case along a k-space line, wherein a same timing sequence of additional gradient pulse and readout time window is used as in the MR sequence; and calculating, from the first and second calibration data, the point spread function for the additional gradient output direction under consideration.
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