# How to convert dicom files to nrrd

**URL:** https://discourse.slicer.org/t/how-to-convert-dicom-files-to-nrrd/540
**Category:** Support
**Created:** [June 20, 2017, 1:48pm UTC](https://discourse.slicer.org/t/how-to-convert-dicom-files-to-nrrd/540 "2017-06-20T13:48:33Z")
**Posts on this page:** 1
**Showing post:** 13

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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: [March 7, 2018, 10:23pm UTC](https://discourse.slicer.org/t/how-to-convert-dicom-files-to-nrrd/540/13 "2018-03-07T22:23:27Z")

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And just to make sure this is clear: converting DICOM to nrrd is not a simple well defined operation in general. DICOM is a very expressive and flexible standard and there are several possibilities for any one collection of DICOM files:

- it may correspond to many nrrd files (e.g. different series in a study)
- there may be more than one valid conversion and only the user knows which is preferred
- it may not be possible for nrrd to represent the DICOM data (such as a DICOM structured report or something)

That said, if you are dealing with a fairly standard case like converting one CT series to a nrrd scalar volume there are many good options as @fedorov points out. It all depends on the data and what you hope to use it for. Luckily there are lots of examples to learn from and by writing a script you can control the process to get what you need.

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