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oh, still a question. when i use fslview to check the 4D file created by SPM5, it shows normal(the contrast and brightness values are approate.) but when i use fslview to check the 4D file created by fslmerge, before it show the image, a warning box apprear:【 warning:multiple versions of the image files exit】，after i click to continue, it also show the image but in the abnormal contrast and brightness value range. why???? 2009/9/14 cliff <[log in to unmask]> > oh! yes，it is just because of the contrast and brightness value. > it seems both spm and MRIcro can adjust automatically, but fsl can't! > after i set the value in fsl as the same in MRIcro, it become the same. > > does it mean that i don't need to care about these different when i try to > do some analysis work on them? > can i set up FSL also to adjust automatically? > > thanks! > > 2009/9/14 Mark Jenkinson <[log in to unmask]> > > Hi, >> >> I think that SPM may view the image in a different orientation to FSLView >> and also probably uses a different display range for the intensities. >> If your "grey" in FSLView is a uniform colour across the image with no >> features, then this probably indicates that the display range encoded >> in the image was inappropriate and you need to set the values for >> the display range (min and max) yourself in order to see the image >> clearly. Try this and see if that works. >> >> I doubt that any of this has any bearing on the use of fslmerge vs >> 3d to 4d. I think it is just about how images are typically displayed. >> >> All the best, >> Mark >> >> >> >> On 13 Sep 2009, at 10:24, cliff wrote: >> >> hello all， >>> when i use "fslmerge" & "3d to 4d" tool in spm5 to merge a group of >>> .hdr/.img file into a 4D file(.nii and .nii.gz) separately. i find that the >>> image result showed in “fslview” is really different. >>> then i find before merging into 4D file, just use “fslview” and spm5's >>> “display” tool to check the same .hdr/.img file, the result is also >>> different. the .hdr/img images showed in "fslview" are grey while showed in >>> spm5 are more normal as we see usually. >>> >>> any body have these experience? can you tell me why? >>> >>> -- >>> Best regards! >>> >>> Sen-Hua Zhu >>> Department of Psychology >>> Sun Yat-sen University >>> 135 Xingang West Road, Haizhu District, Guangzhou (510275), P.R.China >>> 朱森华 >>> 中山大学心理学系 >>> 广东省广州市海珠区新港西路135号（510275） >>> >>> > > > -- > Best regards! > > Sen-Hua Zhu > Department of Psychology > Sun Yat-sen University > 135 Xingang West Road, Haizhu District, Guangzhou (510275), P.R.China > 朱森华 > 中山大学心理学系 > 广东省广州市海珠区新港西路135号（510275） > > -- Best regards! Sen-Hua Zhu Department of Psychology Sun Yat-sen University 135 Xingang West Road, Haizhu District, Guangzhou (510275), P.R.China 朱森华 中山大学心理学系 广东省广州市海珠区新港西路135号（510275）