[Mristudio-users] high Rd value

[hanaie]

Dear DTI experts,

 

After fiber tracking, I obtained FA, trace , Rd, Ad value.

 

Eigen Value - 0

        Max. of ImgVal:   4.647e-003  Min. of ImgVal:   0.000e+000

        Mean of ImgVal:   2.179e-003  Std. of ImgVal:   5.147e-004

Radial Diffusivity

        Max. of ImgVal:   1.998e-003   Min. of ImgVal:   0.000e+000

        Mean of ImgVal:   6.584e-004　 Std. of ImgVal:   3.607e-004

Tensor - Trace

        Max. of ImgVal:   8.643e-003   Min. of ImgVal:   0.000e+000

        Mean of ImgVal:   3.496e-003  Std. of ImgVal:   1.130e-003

Anisotropy - FA

        Max. of ImgVal:   0.8998    Min. of ImgVal:   0.000e+000

        Mean of ImgVal:   0.6589   Std. of ImgVal:   0.1486

 

And , I have questions.

 

Q1. When I report these values, which number must I report? Mean of Imgval?

Q2. When I report MD value, Can I divide trace value by 3?

Q3. I guess that these values obtained are too high, especially Ad and Rd.

   Why happen like this? Values are for superior cerebellar peduncle.

 

Please give me any suggestion.

 

Many thanks.

 

Ryuzo

 

 

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