Some alternatives

Hate FIV? Consider these alternatives:

Amide (http://amide.sourceforge.net/index.html)
MRIcro (http://www.psychology.nottingham.ac.uk/staff/cr1/mricro.html)
ImageJ (http://rsb.info.nih.gov/ij/)
IDOIMAGING (http://idoimaging.com/index.shtml) - a portal to free imaging software