US 12,429,541 B2
Measurement of a gradient field in an MRT system
Michael Köhler, Nuremberg (DE)
Assigned to Siemens Healthineers AG, Forchheim (DE)
Filed by Siemens Healthineers AG, Forchheim (DE)
Filed on Mar. 28, 2023, as Appl. No. 18/127,644.
Claims priority of application No. 22164891 (EP), filed on Mar. 29, 2022.
Prior Publication US 2023/0314539 A1, Oct. 5, 2023
Int. Cl. G01R 33/385 (2006.01)
CPC G01R 33/385 (2013.01) 17 Claims
OG exemplary drawing
 
1. A method for measuring a gradient field in an imaging region of a magnetic resonance tomography (MRT) system, the method comprising:
exciting a first slice in a test object that is located in the imaging region;
after the exciting of the first slice, exciting a second slice in the test object, wherein the second slice intersects with the first slice in an intersection region;
after the exciting of the second slice, switching a readout gradient and acquiring a magnetic resonance (MR) signal emitted from the intersection region;
after the exciting of the second slice and before the switching of the readout gradient, exciting a third slice in the test object, wherein the third slice, the second slice, and the first slice intersect with one another in the intersection region; and
depending on the MR signal, computing a disruption variable that determines a deviation of a temporal course of an amplitude of the readout gradient from a predetermined required course for the readout gradient.