Hi all,
I wanted to make sure how one could assign intensities from the subjacent white matter voxels to the cortical surfaces using mri_vol2surf. Based on the documentation page --projfrac, if used with negative values, would assign white matter values to the surface. I was wondering if this holds true for other options such as projfrac-avg, projfrac-max, projdist-max ... . Further, I wanted to make sure if the third value, designated as del, means the minimum value that could be projected to the surface. For instance: --projdist-max 0 -4 0.1 means to assign the maximum value in the distance 0-4 mm of the gray/white matter boundary to the white matter, that is larger than 0.1 . In case of the local/global outliers, is there any good way of finding, discarding, and replacement of these values, through thresholding+resampling for instance? Finally, I was wondering how it is possible to use these resulting mgh files for group comparison in an uncached dataset, presumably using mris_preproc. Bests, Arash
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