Hi
creating masks and final masking can be done using avwmaths, a simple
command line image calculator - just type avwmaths and have a look at the
options (-mas does what you need)
ta
christian
Christian F. Beckmann
Address: Oxford University Centre for Functional
Magnetic Resonance Imaging of the Brain,
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
Email: [log in to unmask] http://www.fmrib.ox.ac.uk/~beckmann/
Phone: +44(0)1865 222782 Fax: +44(0)1865 222717 Mob: +44(0)7980 691852
On Mon, 19 Aug 2002, Virve A Vuontela wrote:
> Hello again,
> and thank you, Steve, for your quick answer. I would still bother you with
> an additional question. In FSL, is it possible to use "functional masks"? As you may remember, in my design, I had two types
> of tasks, L and C, and each task had two situations, L1 and L2, and C1 and
> C2. I would like to create a mask using comparisons L2 vs. L1 and C2 vs.
> C1, and make a direct comparisons between the tasks (L2 vs. C2 and L1 vs.
> C1) using only those voxels activated in this mask (instead of the whole
> brain). According to your advice, I have to make one of the conditions in
> my design a "rest" condition, so how to make a mask described above?
>
> Virve
>
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