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<DIV>Hi, how are you? </DIV>
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<DIV>I try to use vtk to generate brain contours from MRI scan image and try to make the brain surface transparent. But once I set the surface to transparent, there is some white matters apears in the scene. And I can not make it transparent as well. See the picture in the attachment.</DIV>
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<DIV>Does anyone know how to eliminate those white materials?</DIV>
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<DIV>I have an idea which is to delete the polygons in the back. Is it feasible, and which filter should I use?</DIV>
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<DIV> Luke</DIV></DIV></TD></TR></TBODY></TABLE></DIV></DIV><p><hr SIZE=1>
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