Hi Steve:
I've been using mm and most of the time it does a good job. In
some cases I encounter a problem with what it looks like initial gamma
values. The program reports
"invalid gamma"=invalid gamma
and the tmp value is
tmp=1.000000033e+32.
in most cases after a couple of iterations they disappear and the tmp
value eventually converges.
In some cases though I get no change in the tmp value from above and
the invalid gamma doesn't disappear.
I tried trimming from the z map histogram the tail values that don't
seem to be part of the distribution and also tried eroding the mask in
case brain edge z values are not really part of the distribution. In
both cases I still get the same results.
Any suggestions?
thanks
lino
Lino Becerra PhD
P.A.I.N. Group
Brain Imaging Center
McLean Hospital
115 Mill St.
Belmont, MA 02478
Ph: 617-855-2475
F : 617-855-3772
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