# Cannot find SNRMeasurement Module in Slicer 4.8.0
**URL:** https://discourse.slicer.org/t/cannot-find-snrmeasurement-module-in-slicer-4-8-0/1783
**Category:** Support
**Tags:** extensions-manager, mri
**Created:** [January 8, 2018, 2:07pm UTC](https://discourse.slicer.org/t/cannot-find-snrmeasurement-module-in-slicer-4-8-0/1783 "2018-01-08T14:07:17Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@xaggi](https://discourse.slicer.org/u/xaggi)
#### Post date: [January 8, 2018, 2:07pm UTC](https://discourse.slicer.org/t/cannot-find-snrmeasurement-module-in-slicer-4-8-0/1783/1 "2018-01-08T14:07:17Z")
I want to measure SNR in MRI images. I checked the documentation, one of the methods to measure SNR is using SNRMeasurement module. But I cannot find it in the modules list ☹ Please guide. Also, if there is any better method to measure SNR, please let me know.
Thanks in advance!
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### Author:  [@tokjun](https://discourse.slicer.org/u/tokjun)
#### Post date: [January 8, 2018, 2:57pm UTC](https://discourse.slicer.org/t/cannot-find-snrmeasurement-module-in-slicer-4-8-0/1783/3 "2018-01-08T14:57:33Z")
Thanks for your interest. The source code for the module is available at:
> **[GitHub - SNRLab/SNRMeasurement: 3D Slicer CLI to calculate signal-to-nose...](https://github.com/SNRLab/SNRMeasurement)**
>
> 3D Slicer CLI to calculate signal-to-nose ratio using "difference image" method - GitHub - SNRLab/SNRMeasurement: 3D Slicer CLI to calculate signal-to-nose ratio using "difference im...
It is a scripted module and should run on a binary package of 3D Slicer. I haven’t used it for a while, and am not sure if it runs on the recent version of 3D Slicer. If you find any error, please let me know. It is not in the Slicer Extensions, but if there are some needs, I would be happy to put there.
Thanks,
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### Author:  [@lassoan](https://discourse.slicer.org/u/lassoan)
#### Post date: [January 8, 2018, 6:08pm UTC](https://discourse.slicer.org/t/cannot-find-snrmeasurement-module-in-slicer-4-8-0/1783/4 "2018-01-08T18:08:27Z")
@tokjun It seems that it is a CLI module, so users would need to build Slicer first and then build the module, which could be significant effort. I’ve tried and the module can be built and packaged successfully on Windows. Could you submit it to the extension manager to make it easy to access for users?
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### Author:  [@tokjun](https://discourse.slicer.org/u/tokjun)
#### Post date: [January 8, 2018, 8:08pm UTC](https://discourse.slicer.org/t/cannot-find-snrmeasurement-module-in-slicer-4-8-0/1783/5 "2018-01-08T20:08:14Z")
Sorry, @lassoan is correct. Good to know that it is working on Windows. I’ll submit it to the extension manager.
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### Author:  [@xaggi](https://discourse.slicer.org/u/xaggi)
#### Post date: [January 9, 2018, 5:03am UTC](https://discourse.slicer.org/t/cannot-find-snrmeasurement-module-in-slicer-4-8-0/1783/6 "2018-01-09T05:03:04Z")
Yess, please submit it and make it easily accessible. Thank you very much!