[Mristudio-users] non isometric voxels

[Jun Yi Wang]

Hi Santiago,
We also have DTI images with 1x1x5 mm voxel size.  We tried tractography using DTI Studio, but the fibers fell to propagate to next slices.  I don't know whether reslicing to thinner slices will help or not.  But even it works, the quality of the tractography will not be good.
Jun Yi Wang
Predoc., University of Texas at Dallas
Research assistant, University of Texast Southwestern Medical Center



----- Original Message ----
From: "mustela at mce.hggm.es" <mustela at mce.hggm.es>
To: mristudio-users at mristudio.org
Sent: Monday, August 4, 2008 1:30:53 PM
Subject: [Mristudio-users] non isometric voxels

Hi,

I wonder if someone has experience in DTI analysis using scans from a 
1.5 GE Signa. The problem is that images were acquired for 33 
directions but with a pixel size of 1.1 x 1.1 x 5 mm  (x,y,z) aquired 
in axial (x,y) plane. Far for being isometric, as recommended by the experts...

Before doing all the preprocessing, do you think that those images 
would be too noisy for tracktography or FA analysis??
The data is intended to investigate group comparison patients 
/controls using ADC and RA values, and sample size is not very large.

Thanks in advance,

Santiago

><((((º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><((((º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><((((º>
  `·.¸¸.·´¯`·.¸.·´¯`·...¸><((((º>`·.¸¸.·´¯`·.¸.·´¯`·...¸><((((º>`·.¸¸.·´
Santiago Reig
    Hospital General Universitario Gregorio Marañón
    Unidad de Medicina y Cirugía Experimental
    c/ Dr. Esquerdo 46, 28007 Madrid
          Tel:  34 91 426 5067 Fax: 34 91 426 5108
mustela at mce.hggm.es  http://www.hggm.es/image  

_______________________________________________
Mristudio-users mailing list
Mristudio-users at mristudio.org
http://lists.mristudio.org/mailman/listinfo/mristudio-users



      
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mristudio.org/pipermail/mristudio-users/attachments/20080805/d5c1bce9/attachment.html