DKE generates a set of kurtosis (axial, mean, radial) parametric maps. DKE also generates diffusivity (axial, mean, radial) and fractional anisotropy maps using either DKI or diffusion tensor imaging signal models.* In the latest version of DKE, we added the creation of two new parametric maps; KFA and MKT.
Kmean (MK) - Mean kurtosis, the diffusional kurtosis averaged over all gradient directions8.
Kax (KII) - Axial kurtosis, the diffusional kurtosis in the direction of highest diffusion8.
Krad (KI) - Radial kurtosis, the mean direction kurtosis perpendicular to the direction of highest diffusion7.
MKT - Mean kurtosis tensor73.
K2 (K2) - Kurtosis along the direction of the eigenvector corresponding to the second diffusion tensor eigenvalue.
K3 (K3) - Kurtosis along the direction of minimum diffusivity.
Dmean (MD) - Mean diffusivity, the diffusivity averaged over all gradient directions.
Dax (DII) - Axial diffusivity, the diffusivity in the direction of the highest diffusion.
Drad (Dl) - Radial diffusivity, the mean directional diffusivity perpendicular to the direction of highest diffusion.
D2 (D2) - Diffusivity along the direction of the eigenvector corresponding to the second diffusion tensor eigenvalue.
D3 (D3) - Diffusion along the direction of minimum diffusivity.
FA - Fractional anisotropy, degree of anisotropy of the diffusion tensor74.
KFA - Kurtosis fractional anisotropy, degree of anisotropy of the kurtosis tensor75.
DT - Diffusion tensor
KT - Kurtosis tensor
* Output maps with the extension_dti are the results from DTI processing.