Thanks Mark. Once I load that cluster_mask_zstat image into FSLView,
how do I determine the integer identity of each cluster? When I click
on a cluster does it show this value somewhere in FSLView or do I have
to determine the cluster size?
Thanks again,
Michael
On Sunday, August 31, 2003, at 04:49 PM, Mark Jenkinson wrote:
> Hi Michael,
>
> It isn't the thresh_zstat image that you want - that contains the z
> statistic
> values (post-thresholding). What you want is the cluster_mask_zstat
> images.
> These contain values from 0 to N where N is the number of clusters
> found.
> Note that the largest cluster has value N, the next largest has value
> N-1, etc.
>
> Then, to generate an image of the cluster number M just use avwmaths
> like:
> avwmaths cluster_mask_zstat1 -thr M -uthr M -bin outputclustermask
>
> All the best,
> Mark
>
>
> On Friday, August 29, 2003, at 07:57 pm, Michael Lipton wrote:
>
>> At the course in LA, one of the FMRIB people indicated that when
>> viewed in
>> FSLView, each cluster in thresh_zstat.hdr will have a unique integer
>> value. This could be used to create a mask of one cluster only by
>> thresholding in avwmaths. Now as I look at my zstat image in FSLview I
>> am
>> not clear how I identify the clusters.
>>
>> In any case, what is the best way to generate a binary mask of only
>> one
>> cluster?
>>
>> Thanks,
>>
>> Michael
>
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