# Volume Rendering not recognizing volume

**URL:** <https://discourse.slicer.org/t/volume-rendering-not-recognizing-volume/3955>\
**Category:** Support\
**Created:** [August 30, 2018, 7:48pm UTC](https://discourse.slicer.org/t/volume-rendering-not-recognizing-volume/3955 "2018-08-30T19:48:52Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Nicholas.jacobson](https://avatars.discourse-cdn.com/v4/letter/n/ba8739/32.png) [@Nicholas.jacobson](https://discourse.slicer.org/u/Nicholas.jacobson)\
**Post date:** [August 30, 2018, 7:48pm UTC](https://discourse.slicer.org/t/volume-rendering-not-recognizing-volume/3955/1 "2018-08-30T19:48:52Z")

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Hi all,  
After importing a DCM file stack, I am taking the usual approach of heading to the volume rendering module. However, this time I am not getting any volumes to appear in the drop down… just rename or delete option appears. Any ideas of why this volume may not be appearing?

nick

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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:** [August 30, 2018, 8:36pm UTC](https://discourse.slicer.org/t/volume-rendering-not-recognizing-volume/3955/2 "2018-08-30T20:36:29Z")

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The volume rendering combo box will only show scalar volumes so maybe your dicom data imported as a diffusion weighted node or similar. You can look at the loaded node in the Data module to investigate and/or use the Advanced mode in the DICOM Browser to force using the Scalar Volume option.

HTH,  
Steve

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**Author:** ![Nicholas.jacobson](https://avatars.discourse-cdn.com/v4/letter/n/ba8739/32.png) [@Nicholas.jacobson](https://discourse.slicer.org/u/Nicholas.jacobson)\
**Post date:** [September 5, 2018, 4:26am UTC](https://discourse.slicer.org/t/volume-rendering-not-recognizing-volume/3955/3 "2018-09-05T04:26:21Z")

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Hi @pieper this helped. However, today I was given a ct multivolume of a heart. The multivolume works well to get the ‘video’ to play of the beating heart… however, I cannot seem to get a volume rendering of this file. Any advice?

P.S. The Bitmap Generator works well and our images are headed to the machine to print tomorrow… thank you again.

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**Author:** ![Nicholas.jacobson](https://avatars.discourse-cdn.com/v4/letter/n/ba8739/32.png) [@Nicholas.jacobson](https://discourse.slicer.org/u/Nicholas.jacobson)\
**Post date:** [September 5, 2018, 5:23am UTC](https://discourse.slicer.org/t/volume-rendering-not-recognizing-volume/3955/4 "2018-09-05T05:23:48Z")

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Ah figured it out… you need to copy the frames to register a volume. However, cropping will not work on this volume in the volume render… any advice?

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [September 5, 2018, 12:40pm UTC](https://discourse.slicer.org/t/volume-rendering-not-recognizing-volume/3955/5 "2018-09-05T12:40:38Z")

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> [@Nicholas.jacobson](#):
>
> cropping will not work

Can you please elaborate on this? Thanks

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**Author:** ![Nicholas.jacobson](https://avatars.discourse-cdn.com/v4/letter/n/ba8739/32.png) [@Nicholas.jacobson](https://discourse.slicer.org/u/Nicholas.jacobson)\
**Post date:** [September 5, 2018, 3:00pm UTC](https://discourse.slicer.org/t/volume-rendering-not-recognizing-volume/3955/6 "2018-09-05T15:00:34Z")

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Funny its working now… I was trying to crop using the volume rending module in the typical fashion and it was not cropping… however I opened it this morning and all it back to normal again.

Sorry for the confusion.