Re: [Freesurfer] Mean thickness estimation

2020-11-29 Thread Greve, Douglas N.,Ph.D.
Are you talking about outliers across subject? Or across region? I would just take the FS-supplied value instead of averaging the regions. On 11/19/2020 2:14 AM, Stephanie K wrote: External Email - Use Caution Hi Bruce, Thanks for the prompt reply. It is my understanding that l_thickne

Re: [Freesurfer] Mean thickness estimation {Disarmed}

2020-11-20 Thread Fischl, Bruce
nmovie_qt) Cheers Bruce From: freesurfer-boun...@nmr.mgh.harvard.edu On Behalf Of Stephanie K Sent: Friday, November 20, 2020 6:25 AM To: Freesurfer support list Subject: Re: [Freesurfer] Mean thickness estimation {Disarmed} External Email - Use Caution Hi Bruce, No, I don’t think that

Re: [Freesurfer] Mean thickness estimation {Disarmed}

2020-11-20 Thread Stephanie K
t; Cheers > > Bruce > > > > *From:* freesurfer-boun...@nmr.mgh.harvard.edu < > freesurfer-boun...@nmr.mgh.harvard.edu> *On Behalf Of *Stephanie K > *Sent:* Thursday, November 19, 2020 4:19 PM > *To:* Freesurfer support list > *Subject:* Re: [Freesurfer] Mean thicknes

Re: [Freesurfer] Mean thickness estimation {Disarmed}

2020-11-19 Thread Fischl, Bruce
, 2020 4:19 PM To: Freesurfer support list Subject: Re: [Freesurfer] Mean thickness estimation {Disarmed} External Email - Use Caution Hi Bruce, Is it also necessary to remove outliers (eg. 3 SD from the mean) for Freesurfer structural measures of MRI images that have been visually

Re: [Freesurfer] Mean thickness estimation {Disarmed}

2020-11-19 Thread Stephanie K
mr.mgh.harvard.edu> *On Behalf Of *Stephanie K > *Sent:* Thursday, November 19, 2020 2:14 AM > *To:* freesurfer@nmr.mgh.harvard.edu > *Subject:* Re: [Freesurfer] Mean thickness estimation > > > > *External Email - Use Caution* > > Hi Bruce, > > &

Re: [Freesurfer] Mean thickness estimation

2020-11-19 Thread Fischl, Bruce
Hi Stephanie I think that is always a good idea, unless for some reason it isn’t possible Cheers Bruce From: freesurfer-boun...@nmr.mgh.harvard.edu On Behalf Of Stephanie K Sent: Thursday, November 19, 2020 2:14 AM To: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Mean thickness

Re: [Freesurfer] Mean thickness estimation

2020-11-18 Thread Stephanie K
External Email - Use Caution Hi Bruce, Thanks for the prompt reply. It is my understanding that l_thickness, r_thickness and estimated intracranial volume are accurately measured. Would I still need to identify and remove outliers if visual inspection of the images has not been do

Re: [Freesurfer] Mean thickness estimation

2020-11-18 Thread Fischl, Bruce
: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] Mean thickness estimation External Email - Use Caution Hi, I want to estimate the mean cortical thickness. For this I have summed the thickness across all 34 regions mapped to the Desikan-Killiany atlas. However, I also have the

[Freesurfer] Mean thickness estimation

2020-11-18 Thread Stephanie K
External Email - Use Caution Hi, I want to estimate the mean cortical thickness. For this I have summed the thickness across all 34 regions mapped to the Desikan-Killiany atlas. However, I also have the average mean thickness of left and right hemispheres (direct output variables o