For comparing the registration results by visual observation, I use MRIcro. So that you have two images side by side in the MRIcro environment and then you can compare them using the cross-hairs. You can also try overlaying them at different contrast using MRIcro.<br>
<br>Good luck!<br><br>Abhinay Joshi<br>Principal Imaging Scientist<br>Avid Radiopharmaceuticals Inc.<br>Philadelphia, PA 19104.<br><a href="http://www.avidrp.com">www.avidrp.com</a><br><br><br><br><div class="gmail_quote">
On Feb 12, 2008 12:08 PM, neeru K &lt;<a href="mailto:[log in to unmask]"><a href="/cgi-bin/wa-jisc.exe?LOGON=A3%3Dind0802%26L%3DSPM%26E%3D7bit%26P%3D1307700%26B%3D------%253D_Part_68515_22920366.1202844060318%26T%3Dtext%252Fhtml%3B%2520charset%3DISO-8859-1%26pending%3D" target="_parent" >[log in to unmask]</a></a>&gt; wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>Dear SPMers,</div>
<div>I wanted to know if there is any other way of&nbsp;estimating the accuracy&nbsp;of coregistration apart what is done visually&nbsp;using the CheckReg option.</div>
<div>I ask this because sometimes the EPI image is not very sharp and it is difficult to discern the alignment with the T1 weighted image visually.</div>
<div>Thanks<br clear="all"><br>-- <br>Niranjan Kambi<br>SRF, Neeraj Lab,<br>National Brain Research Centre<br>Manesar, Gurgaon-122050<br>Haryana, INDIA<br>Ph:+919818654846 </div>
</blockquote></div><br><br clear="all"><br>-- <br>Abhinay D. Joshi<br>King Of Prussia<br>PA 19406<br>Cellular:-817-995-3962