[Mristudio-users] Analyze ROIs

[XIN LI]

Graeme,

1) If the analyze image file you created in MRICro is a byte data file, it can be loaded into ROIEditor as "Raw Data (Byte)". You can find this selection in the "Load ROI File" window. 

2) If you want to load the ROI binary map files created by ROIEditor into DtiStudio, you need to modify the *_map.dat file to specify how you want to combine multiple ROIs ("OR", "AND", "NOT", "CUT" operations). The script you need to add is like this: "Operation: 0". I have attached two *_map.dat files to this email. One is created by ROIEditor and the other is by DtiStudio. You can easily find the difference between them. Please refer to this post http://lists.mristudio.org/pipermail/mristudio-users/2008/000050.html

Please let us know if you still have any problems.


Xin




----- Original Message -----
From: Graeme Schwindt <graeme.schwindt at gmail.com>
Date: Friday, April 18, 2008 1:21 pm
Subject: [Mristudio-users] Analyze ROIs
To: mristudio-users at mristudio.org


> Hello,
>  
>  I am a new DTIStudio user, and am experiencing some confusion 
> regarding ROI
>  data formats. I have two issues:
>  
>  1) I would like to import ROIs drawn in MRICro (analyze format) into
>  ROIEditor for statistics calculation,  However, it appears that ROIEditor
>  will not read the analyze files, and gives an roi header file open 
> error. It
>  also refers to a .roihdr file in the error, rather than a .hdr file. 
> Is
>  there anyway to solve this issue?
>  
>  2) I would also like to import ROIs into DTIStudio fiber tracking, in 
> order
>  to delinate seed and target ROIs for tracking of fibers. I noticed an
>  earlier mailing list post about using ROIEditor to make these ROIs, 
> and then
>  save them as binary map files for the fiber tracking ROI module in
>  dtistudio. I did this, and the file was saved as a .dat file by ROIEditor.
>  However, then when I went to load the roi in dtistudio's fiber 
> tracking tab
>  in binary map format, it was asking for a .map file. I  forced it to 
> open
>  the binary map file I had saved in ROIEditor (ending in _map.dat), 
> and while
>  it appeared to load, it did not appear on the image, nor did any fibers
>  appear when the 'selected' radio button was highlighted. I feel I 
> must be
>  making some simple mistake here.
>  
>  Thanks for any help or advice and for supporting this mailing list!
>  
>  Graeme
>  
>  -- 
>  Graeme C. Schwindt, HBSc
>  MD/PhD Student
>  University of Toronto
>  graeme.schwindt at gmail.com
>  416.546.5453 
> _______________________________________________
>  Mristudio-users mailing list
>  Mristudio-users at mristudio.org
>   
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