# Curved 3D MPR from input coordinates

**URL:** <https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080>\
**Category:** Support\
**Created:** [September 12, 2018, 11:18am UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080 "2018-09-12T11:18:59Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![LineM](https://avatars.discourse-cdn.com/v4/letter/l/c37758/32.png) [@LineM](https://discourse.slicer.org/u/LineM)\
**Post date:** [September 12, 2018, 11:19am UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080/1 "2018-09-12T11:19:00Z")

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Operating system: Windows  
Slicer version: 4.8.1

I’ve tried to find an answer to this question on the wiki pages, but haven’t been able to find it:  
Is it possible to use Slicer to generate a curved 3D multiplanar reconstruction (MPR) from a set of already-defined 3D coordinates? I have a text file containing 3D coordinates for a CT scan, and I would like to use these coordinates to make the MPR. Does anyone know how and if this can be done?

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [September 17, 2018, 3:03pm UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080/2 "2018-09-17T15:03:52Z")

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This video shows how to do that: [https://www.youtube.com/watch?v=thExIlffL0I](https://www.youtube.com/watch?v=thExIlffL0I)

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**Author:** ![LineM](https://avatars.discourse-cdn.com/v4/letter/l/c37758/32.png) [@LineM](https://discourse.slicer.org/u/LineM)\
**Post date:** [September 18, 2018, 7:43am UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080/3 "2018-09-18T07:43:18Z")

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Thank you for your reply - but this video does not do what I want.

They only perform the MPR in 2D (in one axial slice) and they define the coordinates manually. I have a file with already-defined 3D coordinates that I want to load into Slicer and use for the MPR. But I haven’t been able to find that functionality in Slicer

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 18, 2018, 7:36pm UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080/4 "2018-09-18T19:36:02Z")

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> [@LineM](#):
>
> I have a file with already-defined 3D coordinates

Can you save the 3D coordinates in CSV files? Slicer can load markups from CSV files, just change the file extension from csv to fcsv.

In recent Slicer versions, you can also copy-paste markup point positions from Excel (column 1 is an ID, you can leave it empty; column 2, 3, 4 are the RAS coordinates of markups).

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**Author:** ![LineM](https://avatars.discourse-cdn.com/v4/letter/l/c37758/32.png) [@LineM](https://discourse.slicer.org/u/LineM)\
**Post date:** [September 19, 2018, 5:58am UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080/5 "2018-09-19T05:58:59Z")

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Yes, I can save them to .fcsv (adding an extra column) and load them in as markups. But then I’m not able to ‘import’ the markups to the ‘Endoscopy’ module and use them to generate the MPR

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 19, 2018, 8:02pm UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080/6 "2018-09-19T20:02:50Z")

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Have you tried selecting the imported fiducial list as “Input fiducials” in Endoscopy module?

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**Author:** ![LineM](https://avatars.discourse-cdn.com/v4/letter/l/c37758/32.png) [@LineM](https://discourse.slicer.org/u/LineM)\
**Post date:** [September 20, 2018, 12:19pm UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080/7 "2018-09-20T12:19:14Z")

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I can choose the points as Input fiducials, but when I press ‘Create path’ nothing happens. In the 3D view I can see the points as spheres, but there is no line connecting the points as in the video pieper linked to.

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [September 20, 2018, 3:03pm UTC](https://discourse.slicer.org/t/curved-3d-mpr-from-input-coordinates/4080/8 "2018-09-20T15:03:34Z")

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It works well for me. Maybe something is wrong with the imported markups. Is any error logged? (menu: Help / Report a bug)