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Hi, Are you running the very latest version of FSL? We had a bug some time ago relating to calculation of image dimensions but that's beed fixed for a while now. If it's not that, then presumably either your input data is corrupted, or it is a RAM/swap issue? Cheers. On 8 Sep 2009, at 12:43, ZhuangJohnny wrote: > Dear FSL experts > > I'm currently using fslmerge to concatenate 428 FA skeletonised > images into one 4D FA skeletonised image in tbss, in order to run > the randomise program. Although the 4D file was created sucessfully, > i could not open this 4D image file in FSLview. When i used fslhd to > check the header information, fsl generated a error message: ERROR > (nifti_image_read): failed to find header file ** ERROR: > nifti_image_open: bad header info Error: failed to open file. It was > obvious that the header file was corrupt. Even though the size of 4D > file is quite large, it should not be a working memory problem, > since i running tbss on a 64bit linux machine with 16G RAM. > I have seen a similar question posted in archive (ID: 019076), > unfortunately, there was no solution to this problem. I'm just > wondering if it is possible to fix this annoying problem for > fslmerge when creating 4D image with large size? > > Thank you in advance for any suggestion and help > > Johnny > > > > > 聊天+搜索+邮箱 想要轻松出游,手机MSN帮你搞定! 立刻下载！ --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Associate Director, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve ---------------------------------------------------------------------------