[MINC-users] CIVET classification problem

Claude LEPAGE claude at bic.mni.mcgill.ca
Thu Dec 10 20:46:50 EST 2009


Hi Jeni,

Can you repost at civet-users and follow the thread from there? If you are not
a member, simply subscribe to the group. This is a CIVET related topic and its
answer will interest the CIVET community.

Yours,

Claude



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> Subject: [MINC-users] CIVET classification problem
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> Hi all,
>
> Upon checking the results of the classified images after running CIVET, I 
> notice that quite often, small portions of the grey matter in the frontal 
> pole or the orbitofrontal area gets cut off. I tried playing with the N3 
> parameters and re-ran CIVET but it didn't help. I was also told that the 
> problem might reside in the algorithm used to extract the brain to make 
> the mask (mincbet, I presume?).  Are there options/parameters that we can 
> specify to improve the result of classification?
>
> Also when looking at the verify.png file- is there a reference value to 
> the ones that are indicated. In other words, when I see for example,
>
> classified image  CSF 7.24%  GM 49.79%  WM 42.97%
> native skull mask in stx space (8.75%)
>
> what do I make of these % numbers, does that tell me whether the 
> classified images are within a standard range?
>
> Thanks!
>
> Jeni
>
> ***********
> Jen-I Chen, MSc.
> Agente de recherche
> Universite de Montreal
> 514.343.6111 x4359
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> MINC-users at bic.mni.mcgill.ca
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