# Slicer vmtk centerline network model in coronary artery

**URL:** <https://discourse.slicer.org/t/slicer-vmtk-centerline-network-model-in-coronary-artery/41619>\
**Category:** Support\
**Tags:** vmtk-centerline\
**Created:** [February 11, 2025, 1:41am UTC](https://discourse.slicer.org/t/slicer-vmtk-centerline-network-model-in-coronary-artery/41619 "2025-02-11T01:41:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![yoonjh119](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/yoonjh119/32/79677_2.png) [@yoonjh119](https://discourse.slicer.org/u/yoonjh119)\
**Post date:** [February 11, 2025, 1:41am UTC](https://discourse.slicer.org/t/slicer-vmtk-centerline-network-model-in-coronary-artery/41619/1 "2025-02-11T01:41:20Z")

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I am extracting the centerline through a network model based on coronary artery segmentation including the aorta. When extracting the centerline, the centerline of the aorta-LM connection (red arrow) often deviates from the mask. When I looked through the forum, it said that oversampling could be a solution, so I oversampled and compared the results (2x, 3x), but the same problem occurred. Do you have a recommended solution to avoid this problem?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/0/d07591e4b0f51c2ef2c3dd761e44db59bbc0e21b.jpeg)

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**Author:** ![chir.set](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/chir.set/32/66982_2.png) [@chir.set](https://discourse.slicer.org/u/chir.set)\
**Post date:** [February 11, 2025, 7:56pm UTC](https://discourse.slicer.org/t/slicer-vmtk-centerline-network-model-in-coronary-artery/41619/2 "2025-02-11T19:56:26Z")

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Have you tried the ‘Tree’ centerline extraction? This mode accounts for blood flow, while the ‘Network’ mode is based on geometry. We see that twisted locations pointed by your arrows become problematic, though I don’t know the exact cause of unexpected result.

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**Author:** ![yoonjh119](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/yoonjh119/32/79677_2.png) [@yoonjh119](https://discourse.slicer.org/u/yoonjh119)\
**Post date:** [February 13, 2025, 11:35am UTC](https://discourse.slicer.org/t/slicer-vmtk-centerline-network-model-in-coronary-artery/41619/3 "2025-02-13T11:35:39Z")

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Yes. We tried it with the tree algorithm, but the centerline is not output to the thin part of the coronary artery, so we are considering extracting the centerline with the network.