Hi John
there is also a binary called mri_cnr that will compute the
contrast-to-noise ratio (CNR), which is really the more interesting
metric. It will also spit out the WM means+- std, and the ratio of these
two can be used as an SNR measure.
cheers
Bruce
On Mon, 19 Oct 2015, John Anderson wrote:
Dear Jürgen
This really helps!
I highly appreciate your input on this.
Bests,
John Anderson
Senior Research Associate
Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834
Fax: +1 (603) 646-1419
Sent: Monday, October 19, 2015 at 1:30 AM
From: JuergenHaenggi <j.haen...@psychologie.uzh.ch>
To: "Freesurfer support list" <freesurfer@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] MPRAGE SNR
Dear John
FS's QA tools provide the SNR
see https://surfer.nmr.mgh.harvard.edu/fswiki/QATools
there is also a FS function called wm-anat-snr that can be used for that.
Hope this helps
Cheers
Jürgen
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Am 18.10.2015 um 16:48 schrieb John Anderson:
Dear Experts,
Is there any tool in Freesurfer that can help to evaluate the SNR for
T1 MPRAGE images directly ( i.e script). If not knidly can any help me
to figure out the best way to dao it.
I highly appreciate your help!
Bests,
John Anderson
Senior Research Associate
Psychological and Brain Sciences Dept.
Dartmouth College, 419 Moore Hall, Hinman Box 6207, Hanover, NH 03755
Phone: +1 (603) 646-9834
Fax: +1 (603) 646-1419
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