# Vascular Modeling Toolkit: Centerline. The format of exported centerline.

**URL:** <https://discourse.slicer.org/t/vascular-modeling-toolkit-centerline-the-format-of-exported-centerline/24331>\
**Category:** Support\
**Tags:** segmentation, extensions-manager, 3d-model\
**Created:** [July 15, 2022, 3:48pm UTC](https://discourse.slicer.org/t/vascular-modeling-toolkit-centerline-the-format-of-exported-centerline/24331 "2022-07-15T15:48:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![NwahsHou](https://avatars.discourse-cdn.com/v4/letter/n/46a35a/32.png) [@NwahsHou](https://discourse.slicer.org/u/NwahsHou)\
**Post date:** [July 15, 2022, 3:48pm UTC](https://discourse.slicer.org/t/vascular-modeling-toolkit-centerline-the-format-of-exported-centerline/24331/1 "2022-07-15T15:48:45Z")

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Hi,  
The centerline curve was successfully obtained, but how can I define the format of exported file.  
3D silcer gives 3 types of format: .mrk.json, .json and .fcsv.  
As I want to preserve the structure and the metadata, I need to use .vtp or .vtk format.  
Could someone help me to do next?  
Thanks so much.

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**Author:** ![mau\_igna\_06](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mau_igna_06/32/9056_2.png) [@mau\_igna\_06](https://discourse.slicer.org/u/mau_igna_06)\
**Post date:** [July 15, 2022, 5:32pm UTC](https://discourse.slicer.org/t/vascular-modeling-toolkit-centerline-the-format-of-exported-centerline/24331/2 "2022-07-15T17:32:40Z")

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You should select the create model option on centerline module. That would give you a 3D model that contains polydata and the pointdata you want to save. After you create it, just click the save dialog and select the format you want

Hope it helps