Single SUVr for PETsurfer

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miracle ozzoude

3 Jul 2019 3 Jul '19

2:15 p.m.

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Hello Expert,

How do i get a single SUVr value for PETsurfer? Similar to Mean_Thickness from Freesurfer, I want to extract a global/Mean SUVr value for each of my subjects.

Thank you.

Paul

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Greve, Douglas N.,Ph.D.

3 Jul 3 Jul

2:58 p.m.

The mean over what area? Whole brain or just cortex?

On 7/3/2019 2:15 PM, miracle ozzoude wrote:

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Hello Expert,

How do i get a single SUVr value for PETsurfer? Similar to Mean_Thickness from Freesurfer, I want to extract a global/Mean SUVr value for each of my subjects.

Thank you.

Paul

_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edumailto:Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

miracle ozzoude

3:36 p.m.

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Over the cortex.

On Wed, Jul 3, 2019 at 2:59 PM Greve, Douglas N.,Ph.D. < DGREVE@mgh.harvard.edu> wrote:

...

The mean over what area? Whole brain or just cortex?

On 7/3/2019 2:15 PM, miracle ozzoude wrote:
    External Email - Use Caution
Hello Expert,

How do i get a single SUVr value for PETsurfer? Similar to Mean_Thickness from Freesurfer, I want to extract a global/Mean SUVr value for each of my subjects.

Thank you.

Paul

Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://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

Greve, Douglas N.,Ph.D.

3:44 p.m.

You can look in the gtm.stats file for all the cortical ROIs. Multiply the uptake value by the number of voxels in the ROI and then divide by the sum of the number of voxels across all ROIs. See https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer here for the identity of the columns in the gtm.stats file

On 7/3/2019 3:36 PM, miracle ozzoude wrote:

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Over the cortex.

On Wed, Jul 3, 2019 at 2:59 PM Greve, Douglas N.,Ph.D. <DGREVE@mgh.harvard.edumailto:DGREVE@mgh.harvard.edu> wrote: The mean over what area? Whole brain or just cortex?

On 7/3/2019 2:15 PM, miracle ozzoude wrote:

External Email - Use Caution

Hello Expert,

How do i get a single SUVr value for PETsurfer? Similar to Mean_Thickness from Freesurfer, I want to extract a global/Mean SUVr value for each of my subjects.

Thank you.

Paul

miracle ozzoude

4:03 p.m.

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E.g. if there are 68 ROIs, single SUVr for each subject will be:

(# of voxels in ROI 1*(suvr of ROI1 ) + ........+ # of voxels in ROI 68*(suvr of ROI 68)) _________________________________ __________________________________ (# of voxels in ROI 1 + .............. # of voxels in ROI 68)

On Wed, Jul 3, 2019 at 3:45 PM Greve, Douglas N.,Ph.D. < DGREVE@mgh.harvard.edu> wrote:

...

You can look in the gtm.stats file for all the cortical ROIs. Multiply the uptake value by the number of voxels in the ROI and then divide by the sum of the number of voxels across all ROIs. See https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer here for the identity of the columns in the gtm.stats file

On 7/3/2019 3:36 PM, miracle ozzoude wrote:
    External Email - Use Caution
Over the cortex.

On Wed, Jul 3, 2019 at 2:59 PM Greve, Douglas N.,Ph.D. < DGREVE@mgh.harvard.edu> wrote:

...
The mean over what area? Whole brain or just cortex?

On 7/3/2019 2:15 PM, miracle ozzoude wrote:
    External Email - Use Caution
Hello Expert,

How do i get a single SUVr value for PETsurfer? Similar to Mean_Thickness from Freesurfer, I want to extract a global/Mean SUVr value for each of my subjects.

Thank you.

Paul

Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://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 listFreesurfer@nmr.mgh.harvard.eduhttps://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

Greve, Douglas N.,Ph.D.

4:09 p.m.

yes

On 7/3/2019 4:03 PM, miracle ozzoude wrote:

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E.g. if there are 68 ROIs, single SUVr for each subject will be:

On Wed, Jul 3, 2019 at 3:45 PM Greve, Douglas N.,Ph.D. <DGREVE@mgh.harvard.edumailto:DGREVE@mgh.harvard.edu> wrote: You can look in the gtm.stats file for all the cortical ROIs. Multiply the uptake value by the number of voxels in the ROI and then divide by the sum of the number of voxels across all ROIs. See https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer here for the identity of the columns in the gtm.stats file

On 7/3/2019 3:36 PM, miracle ozzoude wrote:

External Email - Use Caution

Over the cortex.

On Wed, Jul 3, 2019 at 2:59 PM Greve, Douglas N.,Ph.D. <DGREVE@mgh.harvard.edumailto:DGREVE@mgh.harvard.edu> wrote: The mean over what area? Whole brain or just cortex?

On 7/3/2019 2:15 PM, miracle ozzoude wrote:

External Email - Use Caution

Hello Expert,

How do i get a single SUVr value for PETsurfer? Similar to Mean_Thickness from Freesurfer, I want to extract a global/Mean SUVr value for each of my subjects.

Thank you.

Paul

miracle ozzoude

4:39 p.m.

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thanks doug

paul

On Wed, Jul 3, 2019 at 4:10 PM Greve, Douglas N.,Ph.D. < DGREVE@mgh.harvard.edu> wrote:

...

yes

On 7/3/2019 4:03 PM, miracle ozzoude wrote:
    External Email - Use Caution
E.g. if there are 68 ROIs, single SUVr for each subject will be:

(# of voxels in ROI 1*(suvr of ROI1 ) + ........+ # of voxels in ROI 68*(suvr of ROI 68)) _________________________________ __________________________________ (# of voxels in ROI 1 + .............. # of voxels in ROI 68)

On Wed, Jul 3, 2019 at 3:45 PM Greve, Douglas N.,Ph.D. < DGREVE@mgh.harvard.edu> wrote:

...
You can look in the gtm.stats file for all the cortical ROIs. Multiply the uptake value by the number of voxels in the ROI and then divide by the sum of the number of voxels across all ROIs. See https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer here for the identity of the columns in the gtm.stats file

On 7/3/2019 3:36 PM, miracle ozzoude wrote:
    External Email - Use Caution
Over the cortex.

On Wed, Jul 3, 2019 at 2:59 PM Greve, Douglas N.,Ph.D. < DGREVE@mgh.harvard.edu> wrote:

...
The mean over what area? Whole brain or just cortex?

On 7/3/2019 2:15 PM, miracle ozzoude wrote:
    External Email - Use Caution
Hello Expert,

How do i get a single SUVr value for PETsurfer? Similar to Mean_Thickness from Freesurfer, I want to extract a global/Mean SUVr value for each of my subjects.

Thank you.

Paul

Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://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 listFreesurfer@nmr.mgh.harvard.eduhttps://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 listFreesurfer@nmr.mgh.harvard.eduhttps://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

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Greve, Douglas N.,Ph.D.
miracle ozzoude