Patent ID: 11892532
Assignee: DIGNITY HEALTH
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method, comprising:
accessing, by a processor in communication with a memory, a k-space blade echo signal sampled by a magnetic resonance device in communication with the processor, the k-space blade echo signal including a plurality of sub-blade echoes, the plurality of sub-blade echoes including a set of sub-blade echoes including a gradient-echo sub-blade echo and a spin-echo sub-blade echo;
transforming, by the processor, each sub-blade echo individually into image space;
accessing, by the processor, calibration data for each sub-blade echo of the plurality of sub-blade echoes;
generating, by the processor, a plurality of phase maps by transformation of the calibration data into image space, the plurality of phase maps including:
a gradient-echo phase map that corresponds to calibration data for the gradient-echo sub-blade echo; and
a spin-echo phase map that corresponds to calibration data for the spin-echo sub-blade echo;

generating, by the processor, a gradient-echo phase difference map
that corresponds to a phase difference between the gradient-echo phase map and the spin-echo phase map of the plurality of phase maps;
second and
correct, by the processor, a phase of each gradient-echo sub-blade echo to align with the spin-echo sub-blade echo by removing the gradient-echo phase difference map from the gradient-echo sub-blade in image space.