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<DIV><FONT face=Arial>Dear All,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I have two questions about
LDDMM:<o:p></o:p></FONT></DIV>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial">1. if I have a template image and a subject image and
I want to register these two by LDDMM eventually, 1). should I use LDDMM to
register these two directly or 2). should I use AIR linear to affine transform
them first, and then LDDMM the updated subject image? In the 2<SUP>nd</SUP>
case, I need to reorient tensors twice, once by the AIR transformation matrix
and once by the LDDMM transformation matrix, right?<o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial">I am asking this question because for some other
registration software I have used, it seems the elastic transformation works
better after affine registering the images first.<o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial">Or maybe LDDMM covers rigid and affine transformation
well already so we can do #1?<o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial">2. How does the nonlinear AIR compensate/compare with
LDDMM? Can the nonlinear AIR transformation be applied to reorient
tensors?</SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial">Thank you very much!<o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial"> <o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial">Best,<o:p></o:p></SPAN></P>
<P style="MARGIN: 0in 0in 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: Arial">Yi<o:p></o:p></SPAN></P></BODY></HTML>