# Regarding .h5 file format
**URL:** https://discourse.slicer.org/t/regarding-h5-file-format/4172
**Category:** Support
**Created:** [September 23, 2018, 1:09pm UTC](https://discourse.slicer.org/t/regarding-h5-file-format/4172 "2018-09-23T13:09:49Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@jamieng](https://discourse.slicer.org/u/jamieng)
#### Post date: [September 23, 2018, 1:09pm UTC](https://discourse.slicer.org/t/regarding-h5-file-format/4172/1 "2018-09-23T13:09:49Z")
Hello,
May I know if .h5 file formats are editable in 3D Slicer to perform segmentation?
If it is not, may I know if it is possible to easily convert the file to a compatible and editable format in 3D Slicer?
Thank you so much!
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [September 23, 2018, 10:27pm UTC](https://discourse.slicer.org/t/regarding-h5-file-format/4172/2 "2018-09-23T22:27:55Z")
HDF5 format is just a container. Slicer can read ITK transforms from HDF5 (and maybe images, too, through ITK IO classes). What information is stored in the HDF5 files? What software did you use to create them?
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### Author:  [@jamieng](https://discourse.slicer.org/u/jamieng)
#### Post date: [September 24, 2018, 7:03am UTC](https://discourse.slicer.org/t/regarding-h5-file-format/4172/3 "2018-09-24T07:03:33Z")
I want to obtain high resolution MRI scans of the knee to perform segmentation in 3D Slicer. My supervisor recommended me this website [http://mridata.org/](http://mridata.org/) , however the files are of the .h5 format.
Thank you so much for replying!
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### Author:  [@rkikinis](https://discourse.slicer.org/u/rkikinis)
#### Post date: [September 24, 2018, 9:52am UTC](https://discourse.slicer.org/t/regarding-h5-file-format/4172/4 "2018-09-24T09:52:05Z")
Try this
[https://www.spl.harvard.edu/publications/item/view/1953](https://www.spl.harvard.edu/publications/item/view/1953)
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### Author:  [@Mihail\_Isakov](https://discourse.slicer.org/u/Mihail_Isakov)
#### Post date: [September 24, 2018, 12:42pm UTC](https://discourse.slicer.org/t/regarding-h5-file-format/4172/5 "2018-09-24T12:42:29Z")
Data sets from [mridata.org](http://mridata.org) are k-space data in ISMRMRD format in HDF5 container
[http://mriquestions.com/what-is-k-space.html](http://mriquestions.com/what-is-k-space.html)
Images have to be reconstructed first (HDF5 files can theoretically contain reconstructed images too, AFAIK they do not have reconstructed images). S. [mridata.org](http://mridata.org)’s FAQ, there are python tools, i played with in the past (just for curiosity with test data set testdata.h5) it is no so easy to reconstruct real data sets, but surely possible. Probably not what you need.
Regards
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### Author:  [@Mihail\_Isakov](https://discourse.slicer.org/u/Mihail_Isakov)
#### Post date: [September 25, 2018, 4:43pm UTC](https://discourse.slicer.org/t/regarding-h5-file-format/4172/6 "2018-09-25T16:43:56Z")
@jamieng
FYI, another MR knee study
ftp://medical.nema.org/medical/dicom/DataSets/WG16/Philips/ClassicSingleFrame/Knee/