<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:14pt"><DIV>Hi Bill,</DIV>
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<DIV>Thanks for the reply.Is there registration monitoring Mechanism in ITK.How to set the landmarks on ct images so that corresponding landmarks appear on MRI .I mean assume that I defined 4 landmarks on CT images now i want to define the lanmarks on MRI corresponding to the same slice as of ct .In order to check the accuracy of registration can i view the landmark list by means of itk registration algorithms.Please Help</DIV>
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<DIV>Regards</DIV>
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<DIV>Albert<BR></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Bill Lorensen <bill.lorensen@gmail.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Albert King <albert.king84@yahoo.com><BR><B><SPAN style="FONT-WEIGHT: bold">Cc:</SPAN></B> Insight-Users <insight-users@itk.org><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Tuesday, July 7, 2009 6:20:39 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Insight-users] Multi Modality Image Co Registration<BR></FONT><BR>No. You do not need to perform an MPR. You may have to translate if<BR>they are not landmarked the same. By landmark, I mean the zero<BR>position they set in the exam. For instance in a head exam, they may<BR>landmark at the bridge of the nose.<BR><BR>On Tue, Jul 7, 2009 at 8:35 AM, Albert King<<A href="mailto:albert.king84@yahoo.com" ymailto="mailto:albert.king84@yahoo.com">albert.king84@yahoo.com</A>> wrote:<BR>> Hi Bill,<BR>><BR>> Thanks
for the reply, but radiologists tell that ct and mri scans are<BR>> performed at different angluations and landmarks.In that case do I have to<BR>> perform a MPR on CT so as to match the landmark of MRI.<BR>><BR>><BR>> Thanks and Regards<BR>> Bill<BR>><BR>> ________________________________<BR>> From: Bill Lorensen <<A href="mailto:bill.lorensen@gmail.com" ymailto="mailto:bill.lorensen@gmail.com">bill.lorensen@gmail.com</A>><BR>> To: Albert King <<A href="mailto:albert.king84@yahoo.com" ymailto="mailto:albert.king84@yahoo.com">albert.king84@yahoo.com</A>><BR>> Cc: <A href="mailto:insight-users@itk.org" ymailto="mailto:insight-users@itk.org">insight-users@itk.org</A><BR>> Sent: Tuesday, July 7, 2009 5:48:56 PM<BR>> Subject: Re: [Insight-users] Multi Modality Image Co Registration<BR>><BR>> Albert,<BR>><BR>> itk performs registration in physical space. For radiology data, the<BR>> units are
normally in mm's.<BR>><BR>> If the CT and MR data were landmarked similarly, you should not have<BR>> to modify either dataset. You do not have to resample or reorient<BR>> either volume.<BR>><BR>> That said, the picking of parameters can be tricky.<BR>><BR>> Bill<BR>><BR>> On Tue, Jul 7, 2009 at 8:11 AM, Albert King<<A href="mailto:albert.king84@yahoo.com" ymailto="mailto:albert.king84@yahoo.com">albert.king84@yahoo.com</A>> wrote:<BR>>> Hi All,<BR>>><BR>>> I am trying to perform Image Co registration (fusion ) of CT and MRI dicom<BR>>> Images .Considering my registration as rigid registration (translation ,<BR>>> rotation and scaling) I have fused a single slice of a CT amd MRI using<BR>>> Image registration 8.cxx.I have the following Queries.<BR>>><BR>>> CT data set is obtained from the scanner at a different angulation from<BR>>> that<BR>>> of MRI (i.e .
the way we acquire CT data set is different and the way we<BR>>> acquire MR data set is different).Do I have to perform Multi Planr<BR>>> reformation of the CT datatset to match the MRI angulation .<BR>>> CT data set Matrix Size is of 512 x 512 and MRI data set Matrix Size is<BR>>> 256<BR>>> x 256.Do I have to rescale so as to avoid mis registration.<BR>>> Choosing the right values of different parameters for satisfactory<BR>>> registration is a tricky job.Is there any registration monitoring<BR>>> mechanism<BR>>> in ITK.<BR>>><BR>>><BR>>><BR>>> Please Help.Thanks in Advance.<BR>>><BR>>><BR>>><BR>>><BR>>><BR>>> Regards<BR>>><BR>>><BR>>><BR>>> Albert<BR>>><BR>>> _____________________________________<BR>>> Powered by www.kitware.com<BR>>><BR>>> Visit other Kitware
open-source projects at<BR>>> <A href="http://www.kitware..com/opensource/opensource.html" target=_blank>http://www.kitware..com/opensource/opensource.html</A><BR>>><BR>>> Please keep messages on-topic and check the ITK FAQ at:<BR>>> <A href="http://www.itk.org/Wiki/ITK_FAQ" target=_blank>http://www.itk.org/Wiki/ITK_FAQ</A><BR>>><BR>>> Follow this link to subscribe/unsubscribe:<BR>>> <A href="http://www.itk.org/mailman/listinfo/insight-users" target=_blank>http://www.itk.org/mailman/listinfo/insight-users</A><BR>>><BR>>><BR>><BR>><BR></DIV></DIV></div><br>
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