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Dear Freesurfer group£º
Now,I want  generated a brain mask including the brain but excluding the amplified noise regions after skull strip, but I can't find the corresponding command line, so I send this email to you, hoping to get your help. 
My English is poor, if I make mistakes , I hope you can understand me. Thanks for your help£¡


                                                                                                                                                                                Sincerely: Meng Nan Lin
                                                                                                                                                                                Date: 07/04/2019