# DICOM file, voxel size

**URL:** <https://discourse.slicer.org/t/dicom-file-voxel-size/16202>\
**Category:** Support\
**Created:** [February 25, 2021, 5:31am UTC](https://discourse.slicer.org/t/dicom-file-voxel-size/16202 "2021-02-25T05:31:39Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jhostage](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jhostage/32/8472_2.png) [@jhostage](https://discourse.slicer.org/u/jhostage)\
**Post date:** [February 25, 2021, 5:31am UTC](https://discourse.slicer.org/t/dicom-file-voxel-size/16202/1 "2021-02-25T05:31:39Z")

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Hello - wondering if anyone knows if voxel size in DICOM file of US images will be maintained if the DICOM file is converted to a NIfTI file using slicer.

Thank you!

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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:** [February 25, 2021, 5:34am UTC](https://discourse.slicer.org/t/dicom-file-voxel-size/16202/2 "2021-02-25T05:34:29Z")

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It depends on the ultrasound image. 3D volumes and single-region 2D image sequences should be good.

Unless you work with brain images, I would recommend to use the general-purpose nrrd file format instead of nifti, which is mainly intended for storing brain MRI.