Relative B1+ Mapping Directly from K-Space for Rapid Multi-Transmit Calibration

Keywords

abstract achieved acquiring agreement amplified amplitude anatomical anatomy appears applied approaches appropriate array artifact body brain calibration central channel chosen circumvents clinical coil coils college combinations combining complete configuration containing content corresponds corruption dataset design desired determination determined directly displays divided domain efficient eigenvalue eigenvectors eight equation error errors estimating example exploiting extracted fact fast field fields fitted formulation free frequencies frequency full fully gained generate gold highly imperial in vivo individual inherent insights insisting inversion inverted kernel kernels least like limit linear locally location magnitude majority makes manner mapping maps matrix maximally measured methodology much multiplicative multiplied noise object pixel process processing produces profiles properties proportional proposed pulsed purely rapid receive received receiver reconstructed reflects represented required resolution resolve resolving ringing samples scanned sciences sensitivities sensitivity short simplifies simulated simulation since slice solution space spatial spirit squares suffers sufficiently support taking thank theory third transmit underlying variation vast vector visible width zero