[Mristudio-users] ROI transformation

[Josselin]

Hi,
Your solution seems to works perfectly fine !
Thanks,
Josselin

--- En date de : Mar 20.7.10, susumu mori <susumu at mri.jhu.edu> a écrit :

De: susumu mori <susumu at mri.jhu.edu>
Objet: Re: [Mristudio-users] ROI transformation
À: "DTI Studio, ROI Editor, DiffeoMap Questions/Support" <mristudio-users at mristudio.org>, "Xin Li" <xli16 at jhmi.edu>, "ANDREIA FARIA" <afaria1 at jhmi.edu>
Date: Mardi 20 juillet 2010, 11h58

Hi Josselin,

If I understood your question correctly, you are interested in how to keep the label name after transformation. 

I believe "****TypeII" and "****TypeII.dat" are the same file. They both contains 181x217x181 images. The label is in "****.hdr" file. When you load the image as an ROI file, you need the *.hdr and *.dat file. 


After you transformed a WMPM map (no extension or *.dat file) and save it (e.g. test.dat), I believe you can just rename the *.hdr file so that you can get both test.dat and test.hdr. 

Xin and Andrea, correct me if I'm wrong.


susumu



On Mon, Jul 19, 2010 at 4:20 PM, Josselin <j.houenou at yahoo.fr> wrote:

Dear mristudio developers and users,



I have a pretty trivial question but I couldn't find any way to do it.



I got for one subject a FA image and a B0 image. My goal is to register the WMPM type II eve atlas onto my FA map such as done in http://www.ncbi.nlm.nih.gov/pubmed/20570617 (paper by Zhang).




I therefore used the steps described in https://www.mristudio.org/wiki/user_manual/diffeomap/

I coregistered my FA map and B0 map with air then LDDMM and obtained AIR and LDDDM matrices which seem correct: when I apply Hmap to the file named "JHU_MNI_SS_WMPM_TypeII" then the inverted AIR transformation, it fits perfectly well on my original FA map.




Nevertheless, I do not know how to transform the file "JHU_MNI_SS_WMPM_TypeII.dat" which contains the ROI label names. Is there any way to do it ? When I load this file as a "subject" in diffeomap and then try to apply Hmap.vtk onto it I get "Cannot crop the LDDMM map" as an error message. Any suggestion ??




Many thanks,

Josselin Houenou











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