[Insight-users] Parameter Tunning - Help Needed !!!
cspl
affable at hd2 . dot . net . in
Mon, 19 May 2003 19:34:36 +0530
This is a multi-part message in MIME format.
------=_NextPart_000_0009_01C31E3D.AE2E8AF0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Hi Luis,
Well as u said, the data sets align perfectly even before =
registration. That is first slice of CT Volume align perfectly with =
first slice of PET Volume. Similarly with the last slices of both.=20
Now the problem is with the resolution. CT has 512x512 resolution and =
PET has 128x128. So we can't fuse these two data sets directly because =
of difference in resolution. So first i register these two data sets so =
that i get registered output of dimension 512x512. Then i fuse CT and =
registered output.
Now in registred output i get some blank slices in front and back =
side of the volume which should not happen because the original data =
sets are alrealy aligned (if resolution is not considered).
=20
Now in this case which paremeter i have to change to remove blank =
slices.
My paremeters are:-
Translate scale : 10000
Max Step Length : 1
Min step Lenght : 0.0001
Optimizer scale : 1
Spatial samples : 1000
bins : 50
Levels : 3
Iterations : 150
please help me in this regard.
Thanks in advance.
-Regards,
Sateesh.
------=_NextPart_000_0009_01C31E3D.AE2E8AF0
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 5.50.4134.600" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hi Luis,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2> Well as u said, the data =
sets align=20
perfectly even before registration. That is first slice of CT Volume =
align=20
perfectly with first slice of PET Volume. Similarly with the last slices =
of=20
both. <BR> Now the problem is with the resolution. CT has =
512x512=20
resolution and PET has 128x128. So we can't fuse these two data sets =
directly=20
because of difference in resolution. So first i register these two =
data=20
sets so that i get registered output of dimension 512x512. Then i fuse =
CT and=20
registered output.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2> Now in registred output i =
get some=20
blank slices in front and back side of the volume which should not =
happen=20
because the original data sets are alrealy aligned (if resolution is not =
considered).<BR> <BR> Now in this case which paremeter =
i have=20
to change to remove blank slices.<BR> My paremeters=20
are:-<BR> Translate scale :=20
10000<BR> Max Step Length :=20
1<BR> Min step Lenght :=20
0.0001<BR> Optimizer scale :=20
1<BR> Spatial samples :=20
1000<BR> =20
bins : =
50<BR> =
Levels =20
: 3<BR> =
Iterations :=20
150</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>please help me in this =
regard.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanks in advance.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>-Regards,<BR> =20
Sateesh.</FONT></DIV></BODY></HTML>
------=_NextPart_000_0009_01C31E3D.AE2E8AF0--