Thanks Bruce. You are right. mri_diff gave nothing on the Shell. So, i don&#39;t have to worry. <br><br clear="all">Cheers, Forrest<br>
<br><div class="gmail_quote">On Mon, Aug 15, 2011 at 8:47 PM, Bruce Fischl <span dir="ltr">&lt;<a href="mailto:fischl@nmr.mgh.harvard.edu">fischl@nmr.mgh.harvard.edu</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">

try running mri_diff on them. The image data should be the same. It&#39;s probably the difference between the command line gunzip and the libraries<br>
<br>
cheers<br>
Bruce<div><div></div><div class="h5"><br>
On Mon, 15 Aug 2011, Forrest Sheng Bao wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
hi there,<br>
<br>
i noticed a strange problem tonight. I had a .nii.gz file. I used<br>
mri_convert to convert it into a .mgz file. I also used gzip to unzip the<br>
.nii.gz file and then used mri_convert again to get another .mgz file. But<br>
the two .mgz files have different md5 sums. Does anyone know what caused the<br>
problem? Or is there a problem?<br>
<br>
Cheers, Forrest<br></blockquote></div></div></blockquote></div>