When you load the REC file using "Mri3DView", make sure how many images are in the file. For example, if you used Philips "High" table, you have 1 b0 + 32 DWI + 1 extra image, total 34 images. The last one is an isotropically-weighted image generated from the DWIs. Then make sure your gradient table. Most likely, the number of images in your REC and the gradient table are not matching.<br>
<br>For example, you may have only 33 lines in the table. For the final image, which you don't use, you can add an extra line with 33: 100, 100, 100. The first "33" is the line number (34th table row), and "100, 100, 100" sends a message to DtiStudio "don't use this image".<br>
<br><br><br><div class="gmail_quote">On Tue, Jun 29, 2010 at 6:19 AM, Seyede Ghazal Mohades <span dir="ltr"><<a href="mailto:Seyede.Ghazal.Mohades@vub.ac.be">Seyede.Ghazal.Mohades@vub.ac.be</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
>Dear all<br>
I have a completely basic question<br>
when I try to load Philips Rec images in DTI studio I can do it, however the same set file (which is a DTI ss-EPI sequence )gives the following error when I try to do DTI mapping :<br>
the file is Bigger (and sometimes it says smaller)than a DWI sequence!<br>
where is the problem?<br>
regards<br>
Ghazal<br>
>Thanks<br>
><br>
>-----Original Message-----<br>
>From: <a href="mailto:mristudio-users-bounces@mristudio.org">mristudio-users-bounces@mristudio.org</a> on behalf of <a href="mailto:support@mristudio.org">support@mristudio.org</a><br>
>Sent: Mon 6/28/2010 12:24 PM<br>
>To: DTI Studio, ROI Editor, DiffeoMap Questions/Support<br>
>Subject: Re: [Mristudio-users] Eddy_current_correction<br>
><br>
>the 1st method would be fine: use the 1st B0 as a reference and register all<br>
>others with it.<br>
><br>
>support<br>
><br>
><br>
><br>
>><br>
>> Hi All,<br>
>><br>
>> We have diffusion data set acquired with 5 trails/repetitions(in single time<br>
>> point/cross sectional) for each and every subject. This means i have 5 b0(same<br>
>> value) and DW (12 directions) data while doing eddy current correction can i<br>
>> choose for instance b0 from first trail and register all the DW and other b0<br>
>> images to this or do eddy current correction separately for each and every trail<br>
>> and finally register all of them together say for instance to the first trail.<br>
>><br>
>> Thanks<br>
>><br>
>> venkat<br>
>><br>
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