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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hello Xiaofeng,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’ve been working on something similar, but am not quite
there yet. I can get you started.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The general idea is that you will need to create a polygonal
shape from the contours in the RT structure set, then create a vtkPlane which
represents the plane you wish to cut. You can then create a pipeline
which looks something like:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>vtkCutter -> vtkPolyDataMapper -> vtkActor<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Set the properties of the actor to have EdgeVisibilityOn and an
EdgeColor or the cut shape will not be visible. The actor will show a
cross section of the ROI intersected with the plane.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The issue I’m having is properly displaying the vtkActor
with the images. I’ve extended beyond axial sagittal and coronal
and I seem to be missing something in the coordinate conversions.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Good luck.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> --
Scott<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
vtkusers-bounces@vtk.org [mailto:vtkusers-bounces@vtk.org] <b>On Behalf Of </b>Xiaofeng
Z<br>
<b>Sent:</b> Monday, May 03, 2010 7:12 PM<br>
<b>To:</b> VTK<br>
<b>Subject:</b> [vtkusers] Create an approximate cross-section of a RT ROI<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>Hi vtkUsers,<br>
<br>
I have a set of contours in axial orientation representing a ROI. I need
to sketch the ROI in coronal and sagittal plane, by connection the points made
from the intersection of the contours and the cutting plane. Is there a
function to do that in vtk or in ITK?<br>
<br>
I know the result is not "precise" in a sense that the contours make
this way is not always consistent between themselves. But it seemed to be
the only viable way to sketch a ROI in a multi-planar rendering in real time.<br>
<br>
Many thanks!<br>
Xiaofeng<br>
<br>
<br>
<o:p></o:p></span></p>
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style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>The
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