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<br>Thanks for your suggestions. I have been using 3D-Slicer for viewing the images.<br>What I would like to do is use diffeomorphic demons algorithm developed by Vercauteren T et al. (http://www.insight-journal.org/browse/publication/154) to register a pair of image volumes and apply the resulting deformation onto a 3rd image volume.<br>The command used for registering images I1, I2 is:<br><br>>DemonsRegistration.exe -f I1.mha -m I2.mha -o OutputI1I2.mha -a 1 -l 0.5 -s 0.8 -i 50x50x50 -d 1<br><br>This command generates these output files:<br> WarpedGridImage.mha<br> TransformJacobianDeteminant.mha<br> OutputI1I2.mha<br> ForwardWarpedGridImage.mha<br> and<br> metricvalues.xls<br><br>I can see that WarpedGridImage.mha is the deformation warping grid, but which one of these files is the deformation field ? Is there a way to convert these output mha files into tif format as 3D-Slicer cannot convert some of them?<br><br>As stated above, I would like to apply the resulting deformation onto a 3rd image volume, say, I3 and this can be done using WarpImageFilter1.exe. Should the command be like:<br><br>> WarpImageFilter1 I3.mha WarpedGridImage.mha Final.mha<br><br>Thank you,<br>Ganesh<br><br><font style="" color="#1f497d" face="Verdana">************************************************************************</font><font style="" color="#1f497d" face="Verdana"><br></font><font style="" color="#1f497d" face="Verdana">
"What the mind of man can conceive and believe, It can achieve" - </font><font style="" color="#1f497d" face="Verdana"><span class="ecxil">Napolean</span></font><font style="" color="#1f497d" face="Verdana"> </font><font style="" color="#1f497d" face="Verdana"><span class="ecxil">Hill</span></font><font style="" color="#1f497d" face="Verdana"><br></font><font style="" color="#1f497d" face="Verdana">
-Ganesh
Narayanasamy,Ph.D., PostDoc-University of Kentucky Cancer Center</font><font style="" color="#1f497d" face="Verdana"><br></font><font style="" color="#1f497d" face="Verdana">
Earlier work:
http://www.sciencedaily.com/releases/2007/05/070504133017.htm</font><font style="" color="#1f497d" face="Verdana"><br></font><font style="" color="#1f497d" face="Verdana">
************************************************************************</font><br> <br>> Message: 2<br>> Date: Thu, 15 Apr 2010 21:36:36 -0400<br>> From: Luis Ibanez <luis.ibanez@kitware.com><br>> Subject: Re: [Insight-users] Deformable transform<br>> To: Ganesh Narayanasamy <nganesh76@hotmail.com><br>> Cc: insight-users@itk.org<br>> Message-ID:<br>> <g2gf7abd23c1004151836n31198261ze51659653f880167@mail.gmail.com><br>> Content-Type: text/plain; charset="iso-8859-1"<br>> <br>> Hi Ganesh,<br>> <br>> You may want to use the<br>> <br>> http://www.itk.org/Doxygen/html/classitk_1_1WarpImageFilter.html<br>> <br>> You may also find useful the "vv" application:<br>> <br>> http://www.creatis.insa-lyon.fr/rio/vv<br>> <br>> It provides functionalities for visualizing the outcome of deformable<br>> registration, including the overlapping of the deformation field.<br>> <br>> <br>> Regards,<br>> <br>> <br>> Luis<br>> <br>> <br>> ------------------------------------------------------------------<br>> On Mon, Apr 12, 2010 at 5:17 PM, Ganesh Narayanasamy<br>> <nganesh76@hotmail.com>wrote:<br>> <br>> ><br>> > We have 2 sets of 3D-CT data, one from radiotherapy planning CT (call it as<br>> > image I1) and another one is a cone-beam CT on the treatment table (image<br>> > I2). Performing a deformable registration on these gives us a deformation<br>> > field, say DF.<br>> > I would like to see how the individual structures have deformed between<br>> > image I1 and image I2. The structure that we are interested in (say, S1) is<br>> > masked from image I1 and DF should be applied on it. We would like to see<br>> > how this structure has deformed in the image I2 (its new form is called say,<br>> > S2).<br>> > Error = || DF(S1) - S2 ||<br>> ><br>> > Can you help me in applying DF onto S1. Probably for a few out there, this<br>> > is probably trivial. Should I write a new set of code or is there something<br>> > that is already available?<br>> ><br>> > Thanks,<br>> > Ganesh<br>> ><br><br> <br /><hr />The New Busy is not the old busy. Search, chat and e-mail from your inbox. <a href='http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_3' target='_new'>Get started.</a></body>
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