Dear freesurfer exports,
As it is mentioned in the documentation that 'pediatric data violates the fixed head size assumption' for the current longitudinal stream. Is there any solution for the issue now?
Thanks
Dong
Hi Dong,
it can work, if time points are close to each other (so not much head growth). Feel free to try, but make sure you are carefully looking at the surfaces, that no gray matter is clipped in later time points.
The alternative is to only do cross sectional processing.
Best, Martin
On 14 Feb 2017, at 04:56, Dongnandi dongnandi1@163.com wrote:
Dear freesurfer exports,
As it is mentioned in the documentation that ‘pediatric data violates the fixed head size assumption’ for the current longitudinal stream. Is there any solution for the issue now?
Thanks Dong _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu mailto:Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Hi Martin
Thanks a lot for your reply! Is there any reference that the longitudinal processing would fail if the difference in head size exceeded any certain value?
Best, Dong
发件人: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] 代表 Martin Reuter 发送时间: 2017年2月15日 2:40 收件人: Freesurfer support list freesurfer@nmr.mgh.harvard.edu 主题: Re: [Freesurfer] Longitudinal proceesing for Pediatric data
Hi Dong,
it can work, if time points are close to each other (so not much head growth). Feel free to try, but make sure you are carefully looking at the surfaces, that no gray matter is clipped in later time points.
The alternative is to only do cross sectional processing.
Best, Martin
On 14 Feb 2017, at 04:56, Dongnandi <dongnandi1@163.com mailto:dongnandi1@163.com > wrote:
Dear freesurfer exports,
As it is mentioned in the documentation that ‘pediatric data violates the fixed head size assumption’ for the current longitudinal stream. Is there any solution for the issue now?
Thanks
Dong
_______________________________________________ Freesurfer mailing list mailto:Freesurfer@nmr.mgh.harvard.edu Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
No, not that I know of.
Also I expect that it also depends on other factors (like image resolution, quality, subject anatomy etc) .
Best, Martin
Am 15.02.2017 um 08:21 schrieb Dongnandi:
Hi Martin
Thanks a lot for your reply! Is there any reference that the longitudinal processing would fail if the difference in head size exceeded any certain value?
Best, Dong
*发件人:*freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] *代表 *Martin Reuter *发送时间:*2017年2月15日2:40 *收件人:*Freesurfer support list freesurfer@nmr.mgh.harvard.edu *主题:*Re: [Freesurfer] Longitudinal proceesing for Pediatric data
Hi Dong,
it can work, if time points are close to each other (so not much head growth). Feel free to try, but make sure you are carefully looking at the surfaces, that no gray matter is clipped in later time points.
The alternative is to only do cross sectional processing.
Best, Martin
On 14 Feb 2017, at 04:56, Dongnandi <dongnandi1@163.com <mailto:dongnandi1@163.com>> wrote: Dear freesurfer exports, As it is mentioned in the documentation that ‘pediatric data violates the fixed head size assumption’ for the current longitudinal stream. Is there any solution for the issue now? Thanks Dong _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu <mailto:Freesurfer@nmr.mgh.harvard.edu> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Hi Dong,
What is the age range that you are working with?
Lilla
On Mon, 20 Feb 2017, Martin Reuter wrote:
No, not that I know of.
Also I expect that it also depends on other factors (like image resolution, quality, subject anatomy etc) .
Best, Martin
Am 15.02.2017 um 08:21 schrieb Dongnandi:
Hi Martin Thanks a lot for your reply! Is there any reference that the longitudinal processing would fail if the difference in head size exceeded any certain value? Best, Dong 发件人: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] 代表 Martin Reuter 发送时间: 2017年2月15日 2:40 收件人: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu> 主题: Re: [Freesurfer] Longitudinal proceesing for Pediatric dataHi Dong,
it can work, if time points are close to each other (so not much head growth). Feel free to try, but make sure you are carefully looking at the surfaces, that no gray matter is clipped in later time points.
The alternative is to only do cross sectional processing.
Best, Martin
On 14 Feb 2017, at 04:56, Dongnandi <dongnandi1@163.com> wrote:Dear freesurfer exports,
As it is mentioned in the documentation that ‘pediatric data violates the fixed head size assumption’ for the current longitudinal stream. Is there any solution for the issue now?
Thanks
Dong
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
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