Patent ID: 11867787
Assignee: HYPERFINE OPERATIONS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 17:
18. At least one non-transitory computer-readable storage medium storing processor executable instructions that, when executed by at least one computer hardware processor, cause the at least one computer hardware processor to perform a method of controlling at least one gradient coil of a magnetic resonance imaging (MRI) system, the method comprising:
receiving information specifying at least one target pulse sequence;
determining a corrected pulse sequence to control the at least one gradient coil based on the at least one target pulse sequence and a hysteresis model of induced magnetization in the MRI system caused by operation of the at least one gradient coil, wherein the hysteresis model comprises a plurality of weights, and wherein determining the corrected pulse sequence comprises:
using the hysteresis model to determine a first adjusted pulse amplitude of a first corrected pulse within the corrected pulse sequence based on a measure of the induced magnetization in the MM system caused by operation of the at least one gradient coil, wherein determining the first adjusted pulse amplitude of the first corrected pulse is based on the hysteresis model and a value of at least a second adjusted pulse amplitude of a second corrected pulse that occurs earlier in the corrected pulse sequence than the first corrected pulse, wherein the plurality of weights are used to adjust the at least one target pulse sequence to result in the corrected pulse sequence, and wherein the hysteresis model is based on the measure of the induced magnetization obtained before receiving the information specifying the at least one target pulse sequence; and

controlling, using the corrected pulse sequence, the at least one gradient coil to generate one or more gradient pulses for imaging a patient.