siemens_quat_to_rot_mat#
- mrinufft.io.utils.siemens_quat_to_rot_mat(quat)[source]#
Calculate the rotation matrix from Siemens Twix quaternion.
- Parameters:
quat (np.ndarray) – The quaternion from the Siemens Twix file.
- Returns:
The affine rotation matrix which is a 4x4 matrix. This can be passed as input to affine parameter in nibabel.
- Return type:
np.ndarray