[Insight-users] Multi modality multiresolution registration
CSPL
hyd2_affable at sancharnet.in
Mon, 9 Feb 2004 20:52:23 +0530
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Hi !
We are trying to Fuse a SPECT[brain] on MRI[skull]. We have gone thru =
the following steps
1. We Extracted the brain from the MRI[skull]
2. Register SPECT with this one.
3. And then fuse the REGISTERED SPECT with the MRI[skull]
Everything is going fine, but the REGISTERED SPECT is not aligining =
properly with the MRI[skull].
Details:
EXTRACTED BRAIN:-
Image dimension: 256/256/120
Voxel Spacing: 0.859373/0.859375/1.600000
SPECT:-=20
Image 128/128/48 changes to 128/128/95 after force cubic
Voxel Spacing: 1.802125/1.802125/3.60425
MRI:-=20
Image: 256/256/120
Voxel Spacing: 0.859373/0.859375/1.600000
We are using Multi Modality and Multi Resolution Image Registration =
classes:
CenteredAffineTransform
RegularStepGradientDescentOptimizer
MattesMutualInformationImageToImageMetric
LinearInterpolateImageFunction
MultiResolutionImageRegistrationMethod
RecursiveMultiResolutionPyramidImageFilter
CastImageFilter
ResampleImageFilter
For all these classes we are passing the same parameters as you =
explained in the documentation [probably b'kas we dont know what are =
they exactly]. We are using them as described in the documentation. We =
have gone thru your examples and all worked fine for us. But going to =
3D, it seems problems started.
=20
We dont know where we were lost. Please help us in finding a way. And =
my another request, please include examples on 3D images in the forth =
coming documentation[Thanks for this too]
Thanks in Advance
Rahim
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<DIV><FONT face=3DArial size=3D2>Hi !</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2> We are trying to Fuse a =
SPECT[brain] on=20
MRI[skull]. We have gone thru the following steps</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>1. We Extracted the brain from the =
MRI[skull]<BR>2.=20
Register SPECT with this one.<BR>3. And then fuse the REGISTERED SPECT =
with the=20
MRI[skull]</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2> Everything is going fine, but the =
REGISTERED=20
SPECT is not aligining properly with the =
MRI[skull].<BR>Details:<BR>EXTRACTED=20
BRAIN:-<BR> Image dimension: 256/256/120<BR> Voxel Spacing:=20
0.859373/0.859375/1.600000<BR>SPECT:- <BR> Image 128/128/48 changes =
to 128/128/95 after force cubic<BR> Voxel Spacing:=20
1.802125/1.802125/3.60425<BR>MRI:- <BR> Image: =
256/256/120<BR> Voxel=20
Spacing: 0.859373/0.859375/1.600000</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>We are using Multi Modality and Multi =
Resolution=20
Image Registration=20
classes:<BR> CenteredAffineTransform<BR> RegularStepGradientDes=
centOptimizer<BR> MattesMutualInformationImageToImageMetric<BR> =
;LinearInterpolateImageFunction<BR> MultiResolutionImageRegistration=
Method<BR> RecursiveMultiResolutionPyramidImageFilter<BR> CastI=
mageFilter<BR> ResampleImageFilter</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>For all these classes we are passing =
the same=20
parameters as you explained in the documentation [probably b'kas we dont =
know=20
what are they exactly]. We are using them as described in the =
documentation. We=20
have gone thru your examples and all worked fine for us. But going to =
3D, it=20
seems problems started.<BR> <BR> We dont know where we were =
lost.=20
Please help us in finding a way. And my another request, please include =
examples=20
on 3D images in the forth coming documentation[Thanks for this =
too]</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanks in Advance<BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Rahim</DIV></FONT></BODY></HTML>
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