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<p class="MsoNormal">Hi all,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m working on visualizing cardiac images using volume rendering. I need to cut into the volume to see surfaces inside the heart, which works quite well by using clipping planes of the volume mapper. The only problem is that that surface
at the cut plane looks very rough, which makes it difficult to distinguish from actual endocardial surfaces. If I “cut” the volume by setting voxel values outside the clipping box to “empty” (-1000 = air intensity value) then the cut surface looks nice – smooth
and flat. See example for both cutting method in the attached files. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a way to change volume renderer to get smooth cut surfaces (the same look as we get by setting outside voxels to “empty” values)?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Andras<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">---<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">See full resolution images and more examples here:<o:p></o:p></p>
<p class="MsoNormal"><a href="https://1drv.ms/f/s!Arm_AFxB9yqHsOsClG_QsMx-4sh8rg">https://1drv.ms/f/s!Arm_AFxB9yqHsOsClG_QsMx-4sh8rg</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">CT volume can be downloaded from here:<o:p></o:p></p>
<p class="MsoNormal"><a href="http://slicer.kitware.com/midas3/download/item/292309/CTA-cardio.nrrd">http://slicer.kitware.com/midas3/download/item/292309/CTA-cardio.nrrd</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">________________________<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">Andras Lasso, PhD<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">Senior Research Engineer, Associate Director (Engineering)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">Laboratory for Percutaneous Surgery<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">School of Computing, Queen's University<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;color:#595959">Kingston, ON, Canada<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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