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help > RE: Realign and Unwarp Flipping part of the bold files?
Jan 31, 2019 01:01 PM | Alfonso Nieto-Castanon - Boston University
RE: Realign and Unwarp Flipping part of the bold files?
Hi Harrison,
That is a rather strange issue, could you please confirm that the original volumes (before realign and unwarp) do not have the 2-180 volumes flipped?
The only thing that comes to mind is a rather old bug (see https://www.nitrc.org/forum/forum.php?thread_id=5344&forum_id=1144) which was present in SPM12 around 2015 but has been fixed since, so I am curious as well as to how this flip could have happened.
Thanks
Alfonso
Originally posted by Harrison Fisher:
That is a rather strange issue, could you please confirm that the original volumes (before realign and unwarp) do not have the 2-180 volumes flipped?
The only thing that comes to mind is a rather old bug (see https://www.nitrc.org/forum/forum.php?thread_id=5344&forum_id=1144) which was present in SPM12 around 2015 but has been fixed since, so I am curious as well as to how this flip could have happened.
Thanks
Alfonso
Originally posted by Harrison Fisher:
Hi All,
I'm running into a strange error. I recently decided to reprocess some of the data (180 volume bold files). I used orientLAS and 3dretroicor and then loaded the files into CONN where I ran functional Realign and Unwarp, functional center to (0,0,0) coordinates, and functional outlier detection. The resulting files (with the u* prefix) have the first volume normal, but volumes 2 - 180 are AP flipped.
Any suggestions? I could probably just flip the last 179 volumes, but I'm concerned about why this is happening and the implications it has on the preprocessing.
Best,
- Harris
I'm running into a strange error. I recently decided to reprocess some of the data (180 volume bold files). I used orientLAS and 3dretroicor and then loaded the files into CONN where I ran functional Realign and Unwarp, functional center to (0,0,0) coordinates, and functional outlier detection. The resulting files (with the u* prefix) have the first volume normal, but volumes 2 - 180 are AP flipped.
Any suggestions? I could probably just flip the last 179 volumes, but I'm concerned about why this is happening and the implications it has on the preprocessing.
Best,
- Harris
Threaded View
| Title | Author | Date |
|---|---|---|
| Harrison Fisher | Jan 29, 2019 | |
| Alfonso Nieto-Castanon | Jan 31, 2019 | |
| Harrison Fisher | Feb 5, 2019 | |