Hi,

well - I’d tend to say ‚a good registration is a good registration - no matter how you’ve gotten there‘ .

However, you surely want to avoid any systematic bias. 

So if you are after a group comparison, for example, you may want to apply the same registration to the same number of patients / controls.

In the ideal world you would want to stick to one method (because it will be hard to exclude a bias) and I have never found it necessary to mix up methods. 

But if you can’t get there otherwise I think it is ok.

Others may have a different view but this is what I would say.

Cheers,

Andreas

Von: FSL - FMRIB's Software Library <[log in to unmask]> on behalf of Sheena Sharma <[log in to unmask]>
Antworten an: FSL - FMRIB's Software Library <[log in to unmask]>
Datum: Samstag, 14. Mai 2016 um 02:20
An: <[log in to unmask]>
Betreff: Re: [FSL] BBR misregistration

Hi all,

I am having the same problem when using the BBR registration in the Feat-gui. Like Lino, I get better results when I use the 12DOF option instead. Is it acceptable to use this option for some participants and the BBR for the others for which the BBR gave an acceptable registration? Is it unacceptable to use the 12DOF option all together?

Thanks very much,

Sheena

On Sat, May 14, 2016 at 5:50 AM, Mark Jenkinson <[log in to unmask]> wrote:

Hi,

I also get this bad result and I'm not sure why.

I'll keep looking into it, but I wanted you to know the news (good that you'd done nothing wrong, but bad that there isn't a quick and easy fix that I can see yet).

All the best,

Mark

 

From: FSL - FMRIB's Software Library <[log in to unmask]> on behalf of Lino Becerra <[log in to unmask]>
Reply-To: FSL - FMRIB's Software Library <[log in to unmask]>
Date: Thursday, 12 May 2016 12:52
To: "[log in to unmask]" <[log in to unmask]>
Subject: Re: [FSL] BBR misregistration

Dear Mark:

I'm running it through Melodic_gui and used BBR.  I also used epic_reg and produced the same result.

I uploaded the images you requested as well as the picture of the registration as it appears on the report_reg web page.

I must add that it happens with a few subjects, not all of them. This is not an isolated case.

Thanks so much for your help!

Lino