Hola-

A new version of TORTOISE (2.5.2) has just been released, with Okan having kindly updated the abovementioned features for greater AFNI compatability. It can be downloaded (freely, per usual, though requiring login) from:
[tortoisedti.nichd.nih.gov]

The DIFF_CALC output should now produce a BMTXT_AFNI.txt, which contains an AFNI-formatted text file of the b-matrix information.

Additionally, if using DIFF_CALC to estimate tensors and DTI parameters, the 'flips' of the tensor/vector parameters should now be consistent with other DIFF_CALC outputs and with AFNI for directly using 3dTrackID. You can implement a simple whole brain tracking to be able to visualize the outputs and verify (always encouraged).

Many thanks go to Okan Irfanoglu for implementing these changes.

--pt