dual_echo_gre

Compute field map from dual echo GRE acquisitions.

mr_utils.recon.field_map.dual_echo_gre.dual_echo_gre(m1, m2, TE1, TE2)[source]

Compute wrapped field map from two GRE images at different TEs.

Parameters:
  • m1 (array_like) – GRE image taken with TE = TE1.
  • m2 (array_like) – GRE image taken with TE = TE2.
  • TE1 (float) – echo time corresponding to m1.
  • TE2 (float) – echo time corresponding to m2.
Returns:

fm – Field map in herz
Return type:

array_like