Dear SPM and MRIcro -ers,
I started working with chronic stroke patients. Patients and their controls
are scanned (a fMRI and a structural scan) pre- and post-treatment. I have
some questions/doubts about the cost function masking in SPM2:
The procedure using lesionmask.m uses filenameT1.img, lfilenameT1.img,
mfilenameT1.img creates two files: wfilenameT1.img and wlfilenameT1.img.
1. According to the tutorial I should use the mfilename.img in SPM. I used
it as weight source of the filenameT1.img using the EPI images as "other"
images. Is this the way is to do it? or Can I use a modification of the
wlfilenameT1.img as a weight template instead?
2. Should I process the both sessions for one patient together or separate?
3. In the paper, Brett et al. NeuroImage 2001, It is mentioned that should
be better to apply the same mask to the control volunteer. How I do this?
should I used the wlfilenameT1.img (after inverting the contrast)?
Thanks in advence for your time and patience,
Carlos
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