Re: [Freesurfer] T2 vs. T2-FLAIR update

[Hibert, Matthew Louis]

In my experience, if the only goal is to improve the pial surface 
reconstruction, it is better to use a T2-SPACE-FLAIR than a T2-SPACE.  Whenever 
possible, we acquire a bandwidth matched T2-SPACE-FLAIR at approximately the 
same resolution as our T1 and use this with our Freesurfer reconstructions.

Matt

Clinical Research Coordinator
Stufflebeam Lab
Athinoula A. Martinos Center
Massachusetts General Hospital
149 13th Street, Room 1115S
Charlestown, MA 02129
p: 617-724-5630

From: freesurfer-boun...@nmr.mgh.harvard.edu 
[freesurfer-boun...@nmr.mgh.harvard.edu] on behalf of Matt Glasser 
[m...@ma-tea.com]
Sent: Monday, July 18, 2016 8:32 PM
To: Freesurfer support list
Subject: Re: [Freesurfer] T2 vs. T2-FLAIR update

And I would say if you want to do T1w/T2w myelin mapping the T2w scan will
give you more contrast for that, as the fluid inversion does seem to
reduce your contrast for myelin some (though it may increase your contrast
for CSF).  FLAIR can be useful for other things (like seeing some kinds of
brain lesions more easily) so your choice might depend on what else you
want to do with the images.

Peace,

Matt.

On 7/18/16, 6:59 PM, "Bruce Fischl"
<freesurfer-boun...@nmr.mgh.harvard.edu on behalf of
fis...@nmr.mgh.harvard.edu> wrote:

>Hi Michelle
>
>that's a tough question. We don't have a ton of experience with it one
>way or the other, but if I had to pick one I would pick FLAIR as long as
>you are getting a 3D FLAIR with around 1mm voxels
>
>cheers
>Bruce
>On Mon, 18 Jul 2016,
>Michelle T Kassel wrote:
>
>>
>> Hello,
>>
>>
>> I am beginning a new study and would like to determine the
>> optimal T2 acquisition parameters for improved pial surface
>> results from FreeSurfer. I am wondering if there is a difference in
>>using a
>> T2 or T2-FLAIR. I have found a discussion post from 2014 which provided
>> useful
>>information(https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2014-J
>>uly/039580.ht
>> ml), however, it seems from reading the post that newer developments
>>were
>> underway, and I was wondering if I could get an updated answer to the
>> question:
>>
>>
>> is there any difference from freesurfer's perspective of using T2-space
>>or
>> T2-space-flair?
>>
>>
>> Thank you for your help!
>>
>>
>> Michelle
>>
>>
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Re: [Freesurfer] T2 vs. T2-FLAIR update

[Matt Glasser]

And I would say if you want to do T1w/T2w myelin mapping the T2w scan will
give you more contrast for that, as the fluid inversion does seem to
reduce your contrast for myelin some (though it may increase your contrast
for CSF).  FLAIR can be useful for other things (like seeing some kinds of
brain lesions more easily) so your choice might depend on what else you
want to do with the images.

Peace,

Matt.

On 7/18/16, 6:59 PM, "Bruce Fischl"
 wrote:

>Hi Michelle
>
>that's a tough question. We don't have a ton of experience with it one
>way or the other, but if I had to pick one I would pick FLAIR as long as
>you are getting a 3D FLAIR with around 1mm voxels
>
>cheers
>Bruce
>On Mon, 18 Jul 2016,
>Michelle T Kassel wrote:
>
>> 
>> Hello, 
>> 
>> 
>> I am beginning a new study and would like to determine the
>> optimal T2 acquisition parameters for improved pial surface
>> results from FreeSurfer. I am wondering if there is a difference in
>>using a
>> T2 or T2-FLAIR. I have found a discussion post from 2014 which provided
>> useful 
>>information(https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2014-J
>>uly/039580.ht
>> ml), however, it seems from reading the post that newer developments
>>were
>> underway, and I was wondering if I could get an updated answer to the
>> question:
>> 
>> 
>> is there any difference from freesurfer's perspective of using T2-space
>>or
>> T2-space-flair?
>> 
>> 
>> Thank you for your help!
>> 
>> 
>> Michelle
>> 
>> 
>>___
>Freesurfer mailing list
>Freesurfer@nmr.mgh.harvard.edu
>https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
>
>
>The information in this e-mail is intended only for the person to whom it
>is
>addressed. If you believe this e-mail was sent to you in error and the
>e-mail
>contains patient information, please contact the Partners Compliance
>HelpLine at
>http://www.partners.org/complianceline . If the e-mail was sent to you in
>error
>but does not contain patient information, please contact the sender and
>properly
>dispose of the e-mail.


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Re: [Freesurfer] T2 vs. T2-FLAIR update

[Bruce Fischl]

Hi Michelle

that's a tough question. We don't have a ton of experience with it one 
way or the other, but if I had to pick one I would pick FLAIR as long as 
you are getting a 3D FLAIR with around 1mm voxels


cheers
Bruce
On Mon, 18 Jul 2016, 
Michelle T Kassel wrote:




Hello, 


I am beginning a new study and would like to determine the
optimal T2 acquisition parameters for improved pial surface
results from FreeSurfer. I am wondering if there is a difference in using a
T2 or T2-FLAIR. I have found a discussion post from 2014 which provided
useful 
information(https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2014-July/039580.ht
ml), however, it seems from reading the post that newer developments were
underway, and I was wondering if I could get an updated answer to the
question:


is there any difference from freesurfer's perspective of using T2-space or
T2-space-flair?


Thank you for your help!


Michelle


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[Freesurfer] T2 vs. T2-FLAIR update

[Michelle T Kassel]

Hello,


I am beginning a new study and would like to determine the optimal T2 
acquisition parameters for improved pial surface results from FreeSurfer. I am 
wondering if there is a difference in using a T2 or T2-FLAIR. I have found a 
discussion post from 2014 which provided useful information 
(https://mail.nmr.mgh.harvard.edu/pipermail//freesurfer/2014-July/039580.html), 
however, it seems from reading the post that newer developments were underway, 
and I was wondering if I could get an updated answer to the question:


is there any difference from freesurfer's perspective of using T2-space or 
T2-space-flair?


Thank you for your help!


Michelle
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The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Partners Compliance HelpLine at
http://www.partners.org/complianceline . If the e-mail was sent to you in error
but does not contain patient information, please contact the sender and properly
dispose of the e-mail.