[slicer-users] How to get most accurate 3D volume?

Luo, Jiajia jiajialuo2000 at gmail.com
Tue Jan 5 15:43:30 EST 2010


Hi all,

I have created several 3D models from Labelmaps on MRI scans. The muscle I
am tracing is small and most accurate in the coronal view, however when
labelmap is complete the model created is poor partly because of the 5mm gap
between MRIs and partly because the lofting is incorrect. I therefore have
to make 'fat' tracings in order to make the model look and loft correctly. I
also have to use Laplacian smoothing function.

Questions:
1) If I trace accurately the model is full of holes and there is no
correction function for this is there?
2) Which is the most accurate volume for the model (based on the 'fat'
labelmap tracing) ie one at 5,10,20,30,40 Laplacian or Sinc? And what is the
difference between Laplacian and Sinc (filter type) in 3D slicer?
3) In a single element model should I tick the joint smoothing box ( as this
does make a differnce to the appearance ) or does this make it even less
accurate?

Thanks,

Jiajia
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