if you are using SPM2 :
results : save your thresholded image : X.img
ImCalc : select X.img
name : maskX.img
function : i1>1
> Hi John,
>
> if you have got an image describing your reference space, you can use
> this to interactively create ROI files with SPM5s builtin ROI tool.
> (Its in CheckReg image context menu).
>
> Volkmar
>
> Quoting "<John> <Gelburg>" <[log in to unmask]>:
>
>> Hi,
>>
>> I need to define binary mask, which will define which voxels I take for
>> analysis ("1") and which I don't ("0").
>> It should be 3-D dimension of my whole brain (for example: 91x109x91).
>> I need it in *.img format but for my data (not an abstract anatomical
>> data).
>> How and where I do this? I tried MRIcro and marsbar, but I fail to
>> understand how to do this.
>>
>> Thanks you a lot!
>> John
>>
>
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