A regularization strategy is described for generalized autocalibrating partially parallel acquisition (GRAPPA) that allows successful calibration using a small number of autocalibration signals (ACS). The approach requires certain nonlinear relationships between the GRAPPA coefficients to be satisfied, which increases the redundancy so that fewer ACS need to be acquired.
- Parallel imaging
ASJC Scopus subject areas
- Biomedical Engineering
- Radiology Nuclear Medicine and imaging