Hello, Can you let me know what operating system you are running? Kind Regards Matthew > Hi all > > When I used the bet command to do the brain extraction, I got some errors as follows. > But I do not know what is the cause of the errors. > > I can still get the result. The brain extraction of some cases look fine > but some don't. Especally when I dealed with some cases with severe pathology, > the results show some big holes in the brain. > > > > opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > /opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > /opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > /opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > /opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > /opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > Error: no output filename specified! > Image Exception : #22 :: ERROR: Could not open image data_wangbb_tmp_unbiased_forskull_reduced_tmp_standard_mask > terminate called after throwing an instance of 'RBD_COMMON::BaseException' > Aborted (core dumped) > Cannot open volume data_wangbb_tmp_unbiased_forskull_reduced_tmp_standard_mask_to_in for reading! > Image Exception : #22 :: ERROR: Could not open image data_wangbb_tmp_unbiased_forskull_reduced_tmp_standard_mask_to_in > terminate called after throwing an instance of 'RBD_COMMON::BaseException' > Aborted (core dumped) > Image Exception : #22 :: ERROR: Could not open image data_wangbb_tmp_unbiased_forskull_reduced > terminate called after throwing an instance of 'RBD_COMMON::BaseException' > Aborted (core dumped) > /opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > /opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > /opt/fsl/bin/standard_space_roi: 1: /opt/fsl/bin/standard_space_roi: dc: not found > /opt/fsl/bin/bet: 1: /opt/fsl/bin/bet: dc: not found > /opt/fsl/bin/bet: 244: [: -gt: unexpected operator >