nlop.NoncartesianSense

bartorch.nlop.NoncartesianSense()

Non-Cartesian joint image and coil-sensitivity forward model.

The nonlinear counterpart of bartorch.linop.NoncartesianSense, the model nlinv inverts off the grid. The coil unknown is the Sobolev-weighted k-space representation described in NonlinearSense. The model is asymmetric, as BART builds it: it returns gridded coil images, and NonlinearSense.prepare() puts a measurement in that shape.