Re: [Freesurfer] PVC to calculate myelin maps

2021-06-01 Thread Douglas N. Greve
On 6/1/2021 10:19 AM, Marina Fernández wrote: External Email - Use Caution Thank you very much for your response Doug. What PVC method is most recommended to use to calculate the T1 / T2 ratio (RBV or MG)? I've never done it before. I usually use MG (this will only work for gray ma

Re: [Freesurfer] PVC to calculate myelin maps

2021-06-01 Thread Marina Fernández
External Email - Use Caution Thank you very much for your response Doug. What PVC method is most recommended to use to calculate the T1 / T2 ratio (RBV or MG)? And what value of PSF should we specify to calculate this ratio? To my knowledge, this is an acquisition related paramete

Re: [Freesurfer] PVC to calculate myelin maps

2021-05-31 Thread Douglas N. Greve
Yes, you can use PETsurfer. I would apply it to the ratio On 5/28/2021 10:25 AM, Marina Fernández wrote: External Email - Use Caution Dear experts, I want to calculate myelin maps using the ratio of T1w and T2w MRI images. I saw that the correction of partial volume effects can be u

Re: [Freesurfer] PVC to calculate myelin maps

2021-05-28 Thread Glasser, Matthew
External Email - Use Caution The specific volume to surface mapping we do in the HCP Pipelines minimizes the partial volume effects. Matt. From: on behalf of Marina Fernández Reply-To: Freesurfer support list Date: Friday, May 28, 2021 at 10:06 AM To: "freesurfer@nmr.mgh.har

Re: [Freesurfer] PVC to calculate myelin maps

2021-05-28 Thread Glasser, Matthew
External Email - Use Caution I would use the HCP Pipelines for this. Matt. From: on behalf of Marina Fernández Reply-To: Freesurfer support list Date: Friday, May 28, 2021 at 9:25 AM To: "freesurfer@nmr.mgh.harvard.edu" Subject: [Freesurfer] PVC to calculate myelin maps