Linear Operators#
Sub-package containing Linear operators for MR imaging.
Each operator is derived from torch.nn.Module()
.
As a consequence, they can be composed to build neural network architectures.
Currently implemented linear operator include:
centered n-dimensional FFT and iFFT with masking and low rank subspace projection;
n-dimensional NUFFT with embedded low rank subspace projection;
coil combination and projection operators.
Coil Sensitivity#
Multiply input image by coil sensitivity profile. |
|
Perform coil combination. |
FFT#
Fast Fourier Transform operator. |
|
Inverse Fast Fourier Transform operator. |
|
Self-adjoint Sparse Fast Fourier Transform operator. |
Non-Uniform FFT (NUFFT)#
Non-Uniform Fast Fourier Transform operator. |
|
Adjoint Non-Uniform Fast Fourier Transform operator. |
|
Self-adjoint Non-Uniform Fast Fourier Transform operator. |