Try ITKSNAP:
http://www.itksnap.org/pmwiki/pmwiki.phphttp://www.itksnap.org/pmwiki/pmwiki.php?n=Videos.SNAP3ITK-SNAP Video Library: Version 3.x<
http://www.itksnap.org/pmwiki/pmwiki.php?n=Videos.SNAP3>
www.itksnap.org
ITK-SNAP 3.2 Training Videos These videos are from a training course on ITK-SNAP held in Philadelphia in September 2014. Click on the thumbnails below to view the videos on YouTube.
They have specifically designed their tool to do segmentation (and the first video at the above link is on tumor segmentation)
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