Dear FreeSurfer Experts,
Is there a way to estimate the SNR in MPRAGE scans besides using wm-anat-snr ?
For examples, I read that SNR is improved in multiecho MPRAGE and I am wondering how that is computed?
Thanks! Daniel
Hi Daniel I don't think we claimed it improves snr. Just that it has about the same snr, much smaller distortion and hence much greater cross-session repeatability, and also gives you some T2* info.
mri_cnr will give you some stats if you want Cheers Bruce
On Oct 4, 2013, at 6:40 PM, "Yang, Daniel" yung-jui.yang@yale.edu wrote:
Dear FreeSurfer Experts,
Is there a way to estimate the SNR in MPRAGE scans besides using wm-anat-snr ?
For examples, I read that SNR is improved in multiecho MPRAGE and I am wondering how that is computed?
Thanks! Daniel _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Thanks, Bruce!
Have a nice weekend, Daniel
-- Yung-Jui "Daniel" Yang, PhD Postdoctoral Researcher Yale Child Study Center New Haven, CT (203) 737-5454
On 10/4/13 9:00 PM, "Bruce Fischl" <fischl@nmr.mgh.harvard.edumailto:fischl@nmr.mgh.harvard.edu> wrote:
Hi Daniel I don't think we claimed it improves snr. Just that it has about the same snr, much smaller distortion and hence much greater cross-session repeatability, and also gives you some T2* info.
mri_cnr will give you some stats if you want Cheers Bruce
On Oct 4, 2013, at 6:40 PM, "Yang, Daniel" <yung-jui.yang@yale.edumailto:yung-jui.yang@yale.edu> wrote:
Dear FreeSurfer Experts, Is there a way to estimate the SNR in MPRAGE scans besides using wm-anat-snr ? For examples, I read that SNR is improved in multiecho MPRAGE and I am wondering how that is computed? Thanks! Daniel _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edumailto:Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
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