yes, that is dura and should be manually erased.

cheers Bruce

On Wed, 1 Dec 2010, xuemei lei wrote:

Hi, experts I found my data with a problem like the attached picture: around Coronal 117 slice there are some pial-like tissue included in gray matterÿÿI am not sure this kind of things are pials or gray matter and if I should remove them from the GM. Any help will be appreciated. Thanks in advance