[Mristudio-users] DTI mapping using nifti files

[susumu mori]

Hi Nida,

We are still working on Nifty formats.
You can try using the "Load" function of DtiStudio. There is an option to
read Nifty.
Once you successfully load the file, you can then save them in REC (raw) or
Analyze.
However, at this moment, we can't guarantee the brain orientation,
especially right and left. You have to confirm it by comparing with other
programs.

DtiStudio/MriStudio assume data are directly from scanners to avoid any
confusion about image orientation (radiology-neurology convention), matrix
definition (right or left hand), coordinate definition (where is 0,0,0 in
the matrix), XYZ definition, and oblique angle information. Once the data
went through other programs, we can't keep track of all the potential
definition differences. Then users need to mix different programs with own
responsibility.

Susumu

On Wed, Mar 6, 2013 at 9:06 AM, Nida Sajjad <nidasajjad958 at hotmail.com>wrote:

> Hi,
>
> I have data set of DTI images of patients in the form of nifti files. I
> want to use DTI mapping in DTI studio to calculate FA and MD of specific
> ROI after creating them. Can you tell me best way to convert my data to be
> useable in DTI mapping.
>
> Thanks,
> Regards,
> Nida
>
> ------------------------------
> Date: Tue, 5 Mar 2013 21:56:36 -0500
> From: deepa.krishnaswamy1 at gmail.com
> To: mristudio-users at mristudio.org
> Subject: [Mristudio-users] btable of Siemens Mosaic sample dataset
>
> Hi,
> I believe that there are discrepancies with the sample Siemens Mosaic
> dataset. In the sample dataset, the gradient table is provided. The
> gradient table can of course also be read from the DICOM header. I
> performed the pipeline using both methods, and noticed that the results are
> different. I think that the b vectors are not the same, and also the bvalue
> suggested (700), is incorrect as a value of 800 is read from the DICOM
> header.
> Of course most people would obtain the btable from the header, so this is
> not a major issue, but I wanted to point it out in case someone uses the
> btable provided in the given text file.
> Thanks,
>
> Deepa
>
>
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