# RTstruct display in Slice View

**URL:** <https://discourse.slicer.org/t/rtstruct-display-in-slice-view/29664>\
**Category:** Feature requests\
**Tags:** extensions-manager\
**Created:** [May 26, 2023, 8:35am UTC](https://discourse.slicer.org/t/rtstruct-display-in-slice-view/29664 "2023-05-26T08:35:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ma1282029525](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ma1282029525/32/66047_2.png) [@ma1282029525](https://discourse.slicer.org/u/ma1282029525)\
**Post date:** [May 26, 2023, 8:35am UTC](https://discourse.slicer.org/t/rtstruct-display-in-slice-view/29664/1 "2023-05-26T08:35:05Z")

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I used vtkPlanarContourToClosedSurfaceConversionRule in slicerRT to convert RTstruct to closed surface, but the display effect in my program is different from that in 3Dslicer? I want to know why, in 3DSlicer, the effect appears to be a closed surface sliced like the original image, while in my program, the effect appears to be a simple projection.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/3/4/34d1c8c32ed42a471ad00850ce0ec845c1bef221.png)

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/1/11c18edddbfa605c903123b0e778cd82b7847491.jpeg)

How can I achieve the same display effect as in 3Dslicer？

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<div class="post-metadata">

**Author:** ![ma1282029525](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/ma1282029525/32/66047_2.png) [@ma1282029525](https://discourse.slicer.org/u/ma1282029525)\
**Post date:** [May 26, 2023, 9:17am UTC](https://discourse.slicer.org/t/rtstruct-display-in-slice-view/29664/2 "2023-05-26T09:17:17Z")

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Do I need to execute vtkimagerereslice on polydata？