[Mristudio-users] 4d nii file into dti mapping

[Dresner, Alex]

Hi Deborah,
The Rec file import should work, but you might have to switch between slice-by-slice and gradient-by-gradient (top right of the import window after you select Rec file import) depending on which Par/Rec version you are using.   Also, the gradient table may need adjustment because the Philips scanner exports the isotropically weighted image which DTI Studio does not need.  It also matters if the acquisition protocol uses the 'overplus' gradients, though you can tell from the gradients in the Par file too.

Hope this is helpful,
Alex

____________________
M. Alex Dresner, Ph.D.
MR Clinical Scientist
alex.dresner at philips.com
___________________


From: mristudio-users-bounces at mristudio.org [mailto:mristudio-users-bounces at mristudio.org] On Behalf Of Deborah Little
Sent: Sunday, April 10, 2011 4:05 PM
To: mristudio-users at mristudio.org
Subject: [Mristudio-users] 4d nii file into dti mapping

Has anyone found a solution for reading in a 4D DTI file into DTI studio (Achieva 2.6.3.4)? I've tried to do it as a rec format which does not help as it either gives me an error with the number of files and/or only reconstructs the one slice across all grad directions. I tried it as dicom which does the same thing. Reading it in as a raw file also produces similar problems.

Thanks

Deborah M. Little PhD
Associate Professor of Neurology
The University of Illinois College of Medicine


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