[Insight-users] Parameter Tunning - Help Needed !!!
Lydia Ng
lng at insightful . com
Tue, 20 May 2003 08:40:48 -0700
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Sateesh,
=20
What image format is your data in? I am just wondering if the spacing
information for the CT and PET volume has been set correctly?
=20
- Lydia
=20
-----Original Message-----
From: cspl [mailto:affable@hd2.dot.net.in]=20
Sent: Monday, May 19, 2003 7:05 AM
To: insight-users@public.kitware.com
Subject: [Insight-users] Parameter Tunning - Help Needed !!!
=20
Hi Luis,
=20
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.
=20
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
=20
please help me in this regard.
=20
Thanks in advance.
=20
-Regards,
Sateesh.
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ont></span><font
size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;
color:navy'>,<o:p></o:p></span></font></p>
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>What image format is your data in? =
I am
just wondering if the spacing information for the CT and PET volume has =
been
set correctly?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
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size=3D2 color=3Dnavy face=3DArial><span =
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<p class=3DMsoNormal><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma'>-----Original Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> cspl
[mailto:affable@hd2.dot.net.in] <br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Monday, May 19, =
2003 7:05 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b>
insight-users@public.kitware.com<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [Insight-users] =
Parameter
Tunning - Help Needed !!!</span></font></p>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi Luis,</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> 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. <br>
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.</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> 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).<br>
<br>
Now in this case which paremeter i have to change to remove =
blank
slices.<br>
My paremeters are:-<br>
Translate scale : 10000<br>
Max Step Length : 1<br>
Min step Lenght : 0.0001<br>
Optimizer scale : 1<br>
Spatial samples : 1000<br>
=
bins
: 50<br>
=
Levels : 3<br>
Iterations =
: 150</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>please help me in this =
regard.</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks in advance.</span></font><o:p></o:p></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>-Regards,<br>
Sateesh.</span></font><o:p></o:p></p>
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