External Email - Use Caution
Dear Dr Greeve, I am following petsurfer pipeline to do surface based analysis of PET-FDG data and I have interest in doing partial volume correction. I would like to inquire about:
1) Can partial volume correction be applied on white mater, or just on gray matter?
2) Can partial volume correction be applied between gray matter and CSF?
According to Muller-Gartner (MG) Method we segment the brain to gray/white and csf, then we apply partial volume correction only on gray matter. why not on the other parts.
I apologies if my question is basics and I appreciate your input.
Thanks for publishing this valuable manuscript
https://www.ncbi.nlm.nih.gov/pubmed/26915497
With all respect! Dev
Is this for an ROI-based study or a map-based study? For ROI, we use the GTM, and it PV corrects for all structures (including WM and CSF). For map-based, we use MG. MG removes WM (and CSF) entirely. In theory, it can be run in a way to keep WM and throw GM and CSF away, but that is not implemented. Does this answer your questions?
On 10/10/2018 07:31 AM, David.Mackarthy wrote:
Dear Dr Greeve, I am following petsurfer pipeline to do surface based analysis of PET-FDG data and I have interest in doing partial volume correction. I would like to inquire about:
- Can partial volume correction be applied on white mater, or just on
gray matter?
- Can partial volume correction be applied between gray matter and CSF?
According to Muller-Gartner (MG) Method we segment the brain to gray/white and csf, then we apply partial volume correction only on gray matter. why not on the other parts.
I apologies if my question is basics and I appreciate your input.
Thanks for publishing this valuable manuscript
https://www.ncbi.nlm.nih.gov/pubmed/26915497
With all respect! Dev
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
External Email - Use Caution
Dear Dr Greve, thank you for the response This is for a map-based study. Absolutely, this is clear, I appreciate the response. I just have one additional question and I appreciate your patience.
Is it recommended to apply PVC on white matter or csf? does it make sense to apply PVC on WM and CSF?
Thank you so much!
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Wednesday, October 10, 2018 2:17 PM, Greve, Douglas N.,Ph.D. DGREVE@mgh.harvard.edu wrote:
Is this for an ROI-based study or a map-based study? For ROI, we use the GTM, and it PV corrects for all structures (including WM and CSF). For map-based, we use MG. MG removes WM (and CSF) entirely. In theory, it can be run in a way to keep WM and throw GM and CSF away, but that is not implemented. Does this answer your questions?
On 10/10/2018 07:31 AM, David.Mackarthy wrote:
Dear Dr Greeve, I am following petsurfer pipeline to do surface based analysis of PET-FDG data and I have interest in doing partial volume correction. I would like to inquire about:
Can partial volume correction be applied on white mater, or just on gray matter?
Can partial volume correction be applied between gray matter and CSF?
According to Muller-Gartner (MG) Method we segment the brain to gray/white and csf, then we apply partial volume correction only on gray matter. why not on the other parts. I apologies if my question is basics and I appreciate your input. Thanks for publishing this valuable manuscript https://www.ncbi.nlm.nih.gov/pubmed/26915497 With all respect! Dev
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
It could make sense to apply it to WM. CSF I'm not so sure. Are you really trying to measure the signal in CSF?
On 10/10/18 6:08 PM, David.Mackarthy wrote:
External Email - Use CautionDear Dr Greve, thank you for the response This is for a map-based study. Absolutely, this is clear, I appreciate the response. I just have one additional question and I appreciate your patience.
Is it recommended to apply PVC on white matter or csf? does it make sense to apply PVC on WM and CSF?
Thank you so much!
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Wednesday, October 10, 2018 2:17 PM, Greve, Douglas N.,Ph.D. DGREVE@mgh.harvard.edu wrote:
Is this for an ROI-based study or a map-based study? For ROI, we use the GTM, and it PV corrects for all structures (including WM and CSF). For map-based, we use MG. MG removes WM (and CSF) entirely. In theory, it can be run in a way to keep WM and throw GM and CSF away, but that is not implemented. Does this answer your questions?
On 10/10/2018 07:31 AM, David.Mackarthy wrote:
Dear Dr Greeve, I am following petsurfer pipeline to do surface based analysis of PET-FDG data and I have interest in doing partial volume correction. I would like to inquire about:
Can partial volume correction be applied on white mater, or just on gray matter?
Can partial volume correction be applied between gray matter and CSF?
According to Muller-Gartner (MG) Method we segment the brain to gray/white and csf, then we apply partial volume correction only on gray matter. why not on the other parts. I apologies if my question is basics and I appreciate your input. Thanks for publishing this valuable manuscript https://www.ncbi.nlm.nih.gov/pubmed/26915497 With all respect! Dev
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
freesurfer@nmr.mgh.harvard.edu
-
David.Mackarthy -
Greve, Douglas N.,Ph.D.