# Saving scene as a multi volume sequence

**URL:** <https://discourse.slicer.org/t/saving-scene-as-a-multi-volume-sequence/4320>\
**Category:** Support\
**Created:** [October 8, 2018, 1:06pm UTC](https://discourse.slicer.org/t/saving-scene-as-a-multi-volume-sequence/4320 "2018-10-08T13:06:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Melanie](https://avatars.discourse-cdn.com/v4/letter/m/35a633/32.png) [@Melanie](https://discourse.slicer.org/u/Melanie)\
**Post date:** [October 8, 2018, 1:06pm UTC](https://discourse.slicer.org/t/saving-scene-as-a-multi-volume-sequence/4320/1 "2018-10-08T13:06:58Z")

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Hi, How could I save a multi volume sequence ( output volumes and output transforms) so I can retrieve the scene. I saved scene as mrml and nothing loads , output volumes seq.nrrd loads but does not have my fiducial markers on it. Thanks  
Also if I increase the voxel size or down sampling dicom data how will that affect accuracy of a fiducial marker placed please. thanks

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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:** [October 8, 2018, 2:32pm UTC](https://discourse.slicer.org/t/saving-scene-as-a-multi-volume-sequence/4320/2 "2018-10-08T14:32:17Z")

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> [@Melanie](#):
>
> How could I save a multi volume sequence ( output volumes and output transforms) so I can retrieve the scene. I saved scene as mrml and nothing loads , output volumes seq.nrrd loads but does not have my fiducial markers on it. Thanks

We need more information. What Slicer version do you use, how do you create sequence, fiducial markers, …? Can you also share the scene that does not load?

> [@Melanie](#):
>
> Also if I increase the voxel size or down sampling dicom data how will that affect accuracy of a fiducial marker placed please. thank

Markup fiducials are stored in RAS coordinate system, independently from the volume. So, resolution of the volume does not directly affect accuracy of point placement. Of course, if the image is more blurry then it may be more difficult for users to identify anatomical points accurately.

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**Author:** ![Melanie](https://avatars.discourse-cdn.com/v4/letter/m/35a633/32.png) [@Melanie](https://discourse.slicer.org/u/Melanie)\
**Post date:** [October 8, 2018, 2:57pm UTC](https://discourse.slicer.org/t/saving-scene-as-a-multi-volume-sequence/4320/3 "2018-10-08T14:57:17Z")

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hank you very much Prof Lasso. Could I do this for a volume sequence (4D CT data set) using volumes module please.

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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:** [October 9, 2018, 3:25pm UTC](https://discourse.slicer.org/t/saving-scene-as-a-multi-volume-sequence/4320/4 "2018-10-09T15:25:05Z")

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You can resample an entire volume sequence using “Crop volume sequence” module.