The scout is a short, low resolution scan used by the scanner operator to set the field of view for later scans; it is not use ful. The SpinEcho looks like it is part of a functional or diffusion sequence to perform B0 distortion correction (so not used in the anatomical analysis) I don't know what the Phoenix nii is. I think phoenix is a way to put dicom files back onto the scanner. I don't know why there would be a nii associated with it.

On 7/14/2022 2:54 PM, Addison, Reuben wrote:

I have a rookie question regarding free surfer after going through the excellent course onyoutube

First time I know the free surfer does the reconstruction on the anatomical scan (eg., T1t1_mprage_sag_p2_iso.nii)

I see 3 other files in my data that were never used in the tutorials (SpinEchoFieldMap_AP/PA.nii, AHead_Scout_32ch-head-coil.nii,Phoenix_Document.nii). I am wondering when they were needed. I read about them just never saw them used.

Thanks,

Reuben N. Addison

Postdoctoral Fellow

Brain Recovery Lab

MGH Institute of Health Professions https://www.mghihp.edu/

Charlestown Navy Yard | 36 1st Avenue, Boston MA 02129

p. 225-439-5354 | raddison@mghihp.edu mailto:raddison@mghihp.edu

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