# Question regarding 3D extraction 

**URL:** <https://discourse.slicer.org/t/question-regarding-3d-extraction/12262>\
**Category:** Radiomics\
**Created:** [June 29, 2020, 1:17am UTC](https://discourse.slicer.org/t/question-regarding-3d-extraction/12262 "2020-06-29T01:17:29Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Haoxin\_Zheng](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/haoxin_zheng/32/7280_2.png) [@Haoxin\_Zheng](https://discourse.slicer.org/u/Haoxin_Zheng)\
**Post date:** [June 29, 2020, 1:17am UTC](https://discourse.slicer.org/t/question-regarding-3d-extraction/12262/1 "2020-06-29T01:17:29Z")

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Hi all,  
I recently tried to extract features from a stack of 2D images (which is 3D, e.g. shape (320x320x12)), by setting “voxelbased = True”. I’m confused why the returned value is not a dictionary like the case when I set “voxelbased = False” but like a 3D map? How can I get the dictionary of values instead of the 3D map?  
Thanks

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**Author:** ![JoostJM](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/joostjm/32/1091_2.png) [@JoostJM](https://discourse.slicer.org/u/JoostJM)\
**Post date:** [June 30, 2020, 10:45am UTC](https://discourse.slicer.org/t/question-regarding-3d-extraction/12262/2 "2020-06-30T10:45:22Z")

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Addressed in PyRadiomics Issue [#600](https://github.com/Radiomics/pyradiomics/issues/600).

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**Author:** ![JoostJM](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/joostjm/32/1091_2.png) [@JoostJM](https://discourse.slicer.org/u/JoostJM)\
**Post date:** [June 30, 2020, 10:45am UTC](https://discourse.slicer.org/t/question-regarding-3d-extraction/12262/3 "2020-06-30T10:45:31Z")

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