Hi freesurfer experts,
I have some volumes, which are grey matter surface, to be corrected. So I want to compare the performance of various topology correction methods. Can I only implement the topology correction method in freesurfer?
thanks in advance,
Jerald
Hello,
My name is Alfredo and I'm interested in performing freesurfer with a 3T PHILIPS scanner. I would like to know what are the recommended parameters in this machine to obtain good quality T1 data (equivalent to Siemens MPRAGE or GE SPGR). Thanks a lot,
Alfredo Damasceno
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For our GE 3T scanner (MR-750), we use the following parameters: TE/TR=3.7 / 9.2 ms, flip angle 12°, bandwith= 25; Prep Time= 650; Fov= 25.6; Arc (self calibrated parallel imaging).
----- Original Message ----- From: Alfredo Damasceno To: freesurfer@nmr.mgh.harvard.edu Sent: Thursday, April 08, 2010 4:02 PM Subject: [Freesurfer] 3T Philips scanner
Hello,
My name is Alfredo and I'm interested in performing freesurfer with a 3T PHILIPS scanner. I would like to know what are the recommended parameters in this machine to obtain good quality T1 data (equivalent to Siemens MPRAGE or GE SPGR). Thanks a lot,
Alfredo Damasceno
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Hi Alfredo,
you might try the ADNI mprage parameters, which exist on the Philips 3T I think. Not sure what they are offhand. Ron Killiany (ccd) probably knows. If not, you can get them from one of the ADNI sites.
cheers Bruce
On Thu, 8 Apr 2010, Alfredo Damasceno wrote:
Hello,
My name is Alfredo and I'm interested in performing freesurfer with a 3T PHILIPS scanner. I would like to know what are the recommended parameters in this machine to obtain good quality T1 data (equivalent to Siemens MPRAGE or GE SPGR). Thanks a lot,
Alfredo Damasceno
Hotmail: Powerful Free email with security by Microsoft. https://signup.live.com/signup.aspx?id=60969
sorry, I don't understand. You are welcome to our source code if you want it, which includes 2 surface-based and one volumetric topology correction algorithm.
cheers Bruce On Thu, 8 Apr 2010, Jerald Zhao wrote:
Hi freesurfer experts,
I have some volumes, which are grey matter surface, to be corrected. So I want to compare the performance of various topology correction methods. Can I only implement the topology correction method in freesurfer?
thanks in advance,
Jerald
freesurfer@nmr.mgh.harvard.edu
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Alfredo Damasceno -
antonio cerasa -
Bruce Fischl -
Jerald Zhao