One of my subjects exhibited motion during the middle time point of one the functional scans. FS-FAST then reads all other time points as having a significant amount of motion because the subject was out of place during the point that is marked as the origin. Is there some way that I can set a different time point? I am worried that there will be some over-correction for motion that isn't really there because my middle time point it out of an anomaly.
-Ronny
Hi Ronny, the time point used to as the template is hard-coded to be the middle time point. If this is just the case for one subject, a silly but simple solution is to remove the last two time points from the time series. This will cause the "middle" time point to shift to an earlier time point. Would this work? doug
On 04/10/2013 01:48 PM, preciado@nmr.mgh.harvard.edu wrote:
One of my subjects exhibited motion during the middle time point of one the functional scans. FS-FAST then reads all other time points as having a significant amount of motion because the subject was out of place during the point that is marked as the origin. Is there some way that I can set a different time point? I am worried that there will be some over-correction for motion that isn't really there because my middle time point it out of an anomaly.
-Ronny
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
If anything I was thinking of removing the first two time points, as those are going to get nixed anyway. I was hoping it wouldn't come to that but i f that's the only way...
-Ronny
Hi Ronny, the time point used to as the template is hard-coded to be the middle time point. If this is just the case for one subject, a silly but simple solution is to remove the last two time points from the time series. This will cause the "middle" time point to shift to an earlier time point. Would this work? doug
On 04/10/2013 01:48 PM, preciado@nmr.mgh.harvard.edu wrote:
One of my subjects exhibited motion during the middle time point of one the functional scans. FS-FAST then reads all other time points as having a significant amount of motion because the subject was out of place during the point that is marked as the origin. Is there some way that I can set a different time point? I am worried that there will be some over-correction for motion that isn't really there because my middle time point it out of an anomaly.
-Ronny
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
-- Douglas N. Greve, Ph.D. MGH-NMR Center greve@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422
Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
You can do that, but you'll need to change the paradigm file to reflect the new timing. doug On 04/10/2013 01:57 PM, preciado@nmr.mgh.harvard.edu wrote:
If anything I was thinking of removing the first two time points, as those are going to get nixed anyway. I was hoping it wouldn't come to that but i f that's the only way...
-Ronny
Hi Ronny, the time point used to as the template is hard-coded to be the middle time point. If this is just the case for one subject, a silly but simple solution is to remove the last two time points from the time series. This will cause the "middle" time point to shift to an earlier time point. Would this work? doug
On 04/10/2013 01:48 PM, preciado@nmr.mgh.harvard.edu wrote:
One of my subjects exhibited motion during the middle time point of one the functional scans. FS-FAST then reads all other time points as having a significant amount of motion because the subject was out of place during the point that is marked as the origin. Is there some way that I can set a different time point? I am worried that there will be some over-correction for motion that isn't really there because my middle time point it out of an anomaly.
-Ronny
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
-- Douglas N. Greve, Ph.D. MGH-NMR Center greve@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422
Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
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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