Hi Marius,<br><br>Thanks a lot. It seems to be what I exactly need. Anyway, is this registration available to run using the binary elastix (what I have been using at the moment)? If not, which components or/and testing files should I use to implement it? <div>
<br></div><div>Thanks again, and sorry for my ignorance.</div><div><br></div><div>Albert<br><br><div class="gmail_quote">2011/7/25 <span dir="ltr"><<a href="mailto:M.Staring@lumc.nl" target="_blank">M.Staring@lumc.nl</a>></span><br>
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<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Hi Albert,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">If you have the coordinates of the sternum in both fixed and moving image you can add a term to the registration framework that penalizes deviation away from
alignment of that point (or multiple points). We have done something similar:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><a href="http://elastix.isi.uu.nl/marius/publications/2011_c_MICCAIb.html" target="_blank">http://elastix.isi.uu.nl/marius/publications/2011_c_MICCAIb.html</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">code of which can be found in elastix, which you can use freely.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">But it all depends on whether you have corresponding pointsets.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D">Marius<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;color:#1F497D"><u></u> <u></u></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> <a href="mailto:insight-users-bounces@itk.org" target="_blank">insight-users-bounces@itk.org</a> [mailto:<a href="mailto:insight-users-bounces@itk.org" target="_blank">insight-users-bounces@itk.org</a>]
<b>On Behalf Of </b>Albert Gubern Mérida<br>
<b>Sent:</b> maandag 25 juli 2011 15:41<br>
<b>To:</b> <a href="mailto:insight-users@itk.org" target="_blank">insight-users@itk.org</a><br>
<b>Subject:</b> [Insight-users] B-Splines registration with fixed points<u></u><u></u></span></p><div><div></div><div>
<p class="MsoNormal" style="margin-left:36.0pt"><u></u> <u></u></p>
<p class="MsoNormal" style="margin-left:36.0pt">Hi all,<u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><u></u> <u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt">I am currently working in Breast MRI registration between different patients, especially interested in the alignment of body area (thorax + pectoral muscles). The first step of my registration consist of a translation
to align the sternum, which gives a good initial alignment of the pectoral muscles. In the following link you can see an example of one slice with the sternum indicated with a white cross: <a href="http://imageshack.us/photo/my-images/220/breastmristernum.png/" target="_blank">http://imageshack.us/photo/my-images/220/breastmristernum.png/</a>. After
the translation step with the pectorals already "rigidly" aligned I apply non-rigid b-splines registration to the whole volumes. It works well in some cases, but in others, especially of course when the differences are high between fixed and moving images,
the non-rigid registration move the sternum point and the pectorals are not aligned anymore. <u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><u></u> <u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt">I have thought that not allowing the non-registration the move of the sternum point and the ones close to it could be a good solution for such problem. However, I have taken a look to the classes and the mailing
list but I have not found any direct/easy example to how to do that. <u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><u></u> <u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Could anyone give me some advice? Does a easy way to do it exist or I should modify the classes involved in the registration framework? Which ones should I take a look? <u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><u></u> <u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Thanks in advance,<u></u><u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><u></u> <u></u></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Albert<u></u><u></u></p>
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