sigpy.mri.radial

sigpy.mri.radial(coord_shape, img_shape, golden=True, dtype=<class 'float'>)[source]

Generate radial trajectory.

Parameters:
  • coord_shape (tuple of ints) – coordinates of shape [ntr, nro, ndim], where ntr is the number of TRs, nro is the number of readout, and ndim is the number of dimensions.
  • img_shape (tuple of ints) – image shape.
  • golden (bool) – golden angle ordering.
  • dtype (Dtype) – data type.
Returns:

radial coordinates.
Return type:

array

References

1. An Optimal Radial Profile Order Based on the Golden Ratio for Time-Resolved MRI Stefanie Winkelmann, Tobias Schaeffter, Thomas Koehler, Holger Eggers, and Olaf Doessel. TMI 2007. 2. Temporal stability of adaptive 3D radial MRI using multidimensional golden means Rachel W. Chan, Elizabeth A. Ramsay, Charles H. Cunningham, and Donald B. Plewes. MRM 2009.