# Volume rendering shows a solid box

**URL:** <https://discourse.slicer.org/t/volume-rendering-shows-a-solid-box/4390>\
**Category:** Support\
**Created:** [October 14, 2018, 5:53am UTC](https://discourse.slicer.org/t/volume-rendering-shows-a-solid-box/4390 "2018-10-14T05:53:25Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [October 14, 2018, 9:08am UTC](https://discourse.slicer.org/t/volume-rendering-shows-a-solid-box/4390/3 "2018-10-14T09:08:22Z")

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You could use the [Segment Editor](https://slicer.readthedocs.io/en/latest/user_guide/module_segmenteditor.html) to threshold your image and erase the wanted region, then you could use the `Segment Statistics` module to get information like the number of voxel. From there, you should be able to compute the surface using metatdata specific to your image (or “picture”)

[![](https://img.youtube.com/vi/fM_rxfDTRi0/maxresdefault.jpg "Segment statistics - new module in 3D Slicer") ](https://www.youtube.com/watch?v=fM_rxfDTRi0)

> [@Segment Statistics Volume Calculation](https://discourse.slicer.org/t/segment-statistics-volume-calculation/3252):
>
> Hello, I am new to Slicer and have a few questions about the Segment Statistics Module, particularly how it calculates volume. I am currently segmenting muscle groups, subcutaneous and intramuscular fat within a single slice from MR Images of the thigh. I have read that the Labelmap Statistics calculates volume as the product of the pixel spacing (mm3) and the pixel count. I am curious if Slicer is using the actual pixel dimensions given in the DICOM header combined with the slice thickness or n…

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_[View the full topic](https://discourse.slicer.org/t/volume-rendering-shows-a-solid-box/4390)._