Spherical deconvolution for data with multiple b-values

Rui Lavrador

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Jan 13, 2015, 6:38:58 AM1/13/15

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Hi,

I read in a previous topic that the CSD tractography is not implemented for data with multiple b-values.

I would like to know if it is already possible or if it will be possible in the future.

Best regards,

Rui

Alexander Leemans

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Jan 13, 2015, 6:41:41 AM1/13/15

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Hi Rui,

No - it is currently not possible. Although it will probably not be included in the next release, it may become available in future releases.

Cheers,

-A

Cristina Simón Martínez

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Feb 12, 2016, 7:20:33 AM2/12/16

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Hi all,

Related to this post I would like to ask if it would be OK to do DTI based tractography with multishell data (3 non-b0 values), since ExploreDTI does not include CSD in multishell data yet.

Do you have any ideas?

Thanks in advance!

Best regards,

Cristina

Sjoerd Vos

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Feb 12, 2016, 12:54:58 PM2/12/16

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Hi Cristina,

Yes, DTI-based tractography on multi-shell data is perfectly possible. However, depending on the data (i.e., b-values and number of DWIs per b-value) CSD tractography might still outperform DTI tractography. What is the data in question like?

Cheers,
Sjoerd

Cristina Simón Martínez

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Feb 12, 2016, 4:02:01 PM2/12/16

to Sjoerd Vos, ExploreDTI

Hi Sjoerd,

Thanks for the info and for the quick reply!
I have 10 images b0, 25 b700, 40 b1000 and 75 b2800. Could that be an option?

Thanks in advance!
Cristina

Cristina Simon-Martinez

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Behzad Amanpour

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Feb 13, 2016, 9:06:33 AM2/13/16

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Hi Cristina

As Sjoerd said, yes you could outperform DTI tractography using CSD on 75 b2800s or even 40 b1000s, depending on your purpose.

Cheers,

Behzad

Sjoerd Vos

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Feb 13, 2016, 12:02:50 PM2/13/16

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Hi,

I agree with Behzad: using the 75 DWIs @ b=2800 should yield very good results with CSD tractography.

Sjoerd

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