# RVesselX don't show current node placement help option

**URL:** <https://discourse.slicer.org/t/rvesselx-dont-show-current-node-placement-help-option/25454>\
**Category:** Support\
**Created:** [September 27, 2022, 9:53pm UTC](https://discourse.slicer.org/t/rvesselx-dont-show-current-node-placement-help-option/25454 "2022-09-27T21:53:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gonzalo\_Rojas\_Costa](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/gonzalo_rojas_costa/32/5259_2.png) [@Gonzalo\_Rojas\_Costa](https://discourse.slicer.org/u/Gonzalo_Rojas_Costa)\
**Post date:** [September 27, 2022, 9:53pm UTC](https://discourse.slicer.org/t/rvesselx-dont-show-current-node-placement-help-option/25454/1 "2022-09-27T21:53:49Z")

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Hi:

I tried to use the “Show current node placement help” option in RVesselX, but appears a blank window. Why?.

 ![Sin nombre](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/6/d66470bb258b0f51cb73e23d91b67b3b5bb249c0.jpeg)

Sincerely,

Gonzalo Rojas Costa

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**Author:** ![johny723](https://avatars.discourse-cdn.com/v4/letter/j/7ea924/32.png) [@johny723](https://discourse.slicer.org/u/johny723)\
**Post date:** [October 17, 2023, 10:37pm UTC](https://discourse.slicer.org/t/rvesselx-dont-show-current-node-placement-help-option/25454/2 "2023-10-17T22:37:18Z")

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Hi  
I have another problem with rvesselx. When placing nodes for either portal vein tree or IVC vein tree, there seems to be only 1 shot at each node. IWhen I place them incorrectly, I do not know how to repeat the process and adjust it to make it right. Changing the position of the nodes in order to correct them is almost impossible. I can only change them in one plane within one slide. How do I change them after I have already placed them? Thanks