Dear Freesurfer group,
We have some scans that have been processed using Freesurfer 5.1 and the measures have already been extracted from the DKT atlas. We've realized that some of the scans have been flipped left to right before proceeding through recon-all. Assuming we cannot reprocess these scans nor upgrade to Freesurfer 6.0, can we simply flip our left and right ?hemisphere measurements for the affected subjects? Or does the DKT atlas incorporate left-right asymmetry in the brain?
Best,
Olivia
________________________________
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Hi Olivia
yes, the DKT (and other internal atlases) will probably have asymmetries Bruce On Tue, 14 Aug 2018, Lutz,Olivia (BIDMC - Psychiatry) wrote:
Dear Freesurfer group,
We have some scans that have been processed using Freesurfer 5.1 and the measures have already been extracted from the DKT atlas. We've realized that some of the scans have been flipped left to right before proceeding through recon-all. Assuming we cannot reprocess these scans nor upgrade to Freesurfer 6.0, can we simply flip our left and right hemisphere measurements for the affected subjects? Or does the DKT atlas incorporate left-right asymmetry in the brain?
Best,
Olivia
This message is intended for the use of the person(s) to whom it may be addressed. It may contain information that is privileged, confidential, or otherwise protected from disclosure under applicable law. If you are not the intended recipient, any dissemination, distribution, copying, or use of this information is prohibited. If you have received this message in error, please permanently delete it and immediately notify the sender. Thank you.
To clarify, you cannot just swap the left and right results and get the same thing as if you had analyzed the unflipped data.
On 08/14/2018 12:31 PM, Bruce Fischl wrote:
Hi Olivia
yes, the DKT (and other internal atlases) will probably have asymmetries Bruce On Tue, 14 Aug 2018, Lutz,Olivia (BIDMC - Psychiatry) wrote:
Dear Freesurfer group,
We have some scans that have been processed using Freesurfer 5.1 and the measures have already been extracted from the DKT atlas. We've realized that some of the scans have been flipped left to right before proceeding through recon-all. Assuming we cannot reprocess these scans nor upgrade to Freesurfer 6.0, can we simply flip our left and right hemisphere measurements for the affected subjects? Or does the DKT atlas incorporate left-right asymmetry in the brain?
Best,
Olivia
This message is intended for the use of the person(s) to whom it may be addressed. It may contain information that is privileged, confidential, or otherwise protected from disclosure under applicable law. If you are not the intended recipient, any dissemination, distribution, copying, or use of this information is prohibited. If you have received this message in error, please permanently delete it and immediately notify the sender. Thank you.
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Bruce Fischl -
Douglas N. Greve -
Lutz,Olivia (BIDMC - Psychiatry)