# Setting acquisition parameters for DWI Preprocessing and CSD

**URL:** https://community.mrtrix.org/t/setting-acquisition-parameters-for-dwi-preprocessing-and-csd/4411
**Category:** Uncategorized
**Created:** [December 29, 2020, 5:06pm UTC](https://community.mrtrix.org/t/setting-acquisition-parameters-for-dwi-preprocessing-and-csd/4411 "2020-12-29T17:06:24Z")
**Posts on this page:** 1
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### Author: ![jdtournier](https://community.mrtrix.org/user_avatar/community.mrtrix.org/jdtournier/32/2594_2.png) [@jdtournier](https://community.mrtrix.org/u/jdtournier)
#### Post date: [January 7, 2021, 9:30am UTC](https://community.mrtrix.org/t/setting-acquisition-parameters-for-dwi-preprocessing-and-csd/4411/2 "2021-01-07T09:30:06Z")

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Hi José,

Similar questions have been asked a few times in the past (see e.g. [this post](https://community.mrtrix.org/t/csd-on-standard-dwi-data/2499) or [this post](https://community.mrtrix.org/t/csd-on-dti-data-with-30-directions/81/3)). Basically, CSD is certainly feasible and will run, but the quality of results may be questionable. It depends to a large extent on the SNR, and also what you plan to do with the results exactly. Assuming sufficient SNR, I’d expect you would get decent results here, though you could obviously get better with a slightly higher b-value and more directions, and even simply repeating the acquisition to boost SNR will already achieve a lot (32 directions is enough for a decent _l_max=6 fit) – just make sure you _don’t_ average the images if you do that.

Hope this helps,  
Donald.

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