Re: [Freesurfer] Total White matter and CSF value Calculation

[M Janani]

Thanks Douglas

From: freesurfer-boun...@nmr.mgh.harvard.edu 
[mailto:freesurfer-boun...@nmr.mgh.harvard.edu] On Behalf Of Douglas Greve
Sent: 02 August 2017 21:15
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Total White matter and CSF value Calculation


The first formula is right. I would not trust the 2nd formula since we don't 
compute actual ICV

On 8/2/17 2:22 AM, M Janani wrote:

Hi Douglas,



Thanks for your support.



From the below conclusion, can I say



Total ventricular CSF = (lh + rh) Lateral-Ventricle + = (lh + 
rh)Inf-Lat-Vent + (lh + rh)choroid-plexus + 3rd-Ventricle + 4th-Ventricle + 5th 
Ventricle + CSF.



Also Is it correct to compute Total CSF using the below mentioned 
formula



Total CSF = Intracranial Volume - (Total white matter + Total Gray 
matter)



Regards,

Janani









Douglas 
Greve<https://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=from:%22Douglas+Greve%22>
 Mon, 31 Jul 2017 07:48:02 
-0700<https://www.mail-archive.com/search?l=freesurfer@nmr.mgh.harvard.edu&q=date:20170731>



On 7/31/17 3:12 AM, M Janani wrote:





Hi Team,


Could you please confirm whether the below mentioned formulas to compute Total 
WM and ventricular CSF are correct


1.Total White Matter = CerebralWhiteMatterVol + (lh+rh) Cerebellum White Matter



looks right, though some times people will include brainstem as part of WM


2.Total ventricular CSF = (lh + rh) Lateral-Ventricle + = (lh + rh)Inf-Lat-Vent 
+ (lh + rh)choroid-plexus + 3rd-Ventricle + 4th-Ventricle


There is a 5th ventricle (which I think is basically the aqueduct). There is 
also a segment called "CSF" (24) but can't remember what gets labeled as "CSF"



Thanks for your support.



Regards,



Janani







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Re: [Freesurfer] Total White matter and CSF value Calculation

[Douglas Greve]

The first formula is right. I would not trust the 2nd formula since we 
don't compute actual ICV



On 8/2/17 2:22 AM, M Janani wrote:

Hi Douglas,
Thanks for your support.
From the below conclusion, can I say
Total ventricular CSF = (lh + rh) Lateral-Ventricle + = (lh + 
rh)Inf-Lat-Vent + (lh + rh)choroid-plexus + 3rd-Ventricle + 
4th-Ventricle + *5^th Ventricle + CSF.*

**
**Also Is it correct to compute Total CSF using the below mentioned 
formula
Total CSF = Intracranial Volume – (Total white matter + Total 
Gray matter)

Regards,
Janani

**


Douglas Greve 
Mon, 
31 Jul 2017 07:48:02 -0700 
 



On 7/31/17 3:12 AM, M Janani wrote:
Hi Team,

Could you please confirm whether the below mentioned formulas to 
compute Total WM and ventricular CSF are correct


1.Total White Matter = CerebralWhiteMatterVol + (lh+rh) Cerebellum 
White Matter


looks right, though some times people will include brainstem as part of WM

2.Total ventricular CSF = (lh + rh) Lateral-Ventricle + = (lh + 
rh)Inf-Lat-Vent + (lh + rh)choroid-plexus + 3rd-Ventricle + 4th-Ventricle


There is a 5th ventricle (which I think is basically the aqueduct). 
There is also a segment called "CSF" (24) but can't remember what gets 
labeled as "CSF"


Thanks for your support.
Regards,
Janani
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Re: [Freesurfer] Total White matter and CSF value Calculation

[M Janani]

Hi Douglas,



Thanks for your support.



From the below conclusion, can I say



Total ventricular CSF = (lh + rh) Lateral-Ventricle + = (lh + 
rh)Inf-Lat-Vent + (lh + rh)choroid-plexus + 3rd-Ventricle + 4th-Ventricle + 5th 
Ventricle + CSF.



Also Is it correct to compute Total CSF using the below mentioned 
formula



Total CSF = Intracranial Volume - (Total white matter + Total Gray 
matter)



Regards,

Janani









Douglas 
Greve
 Mon, 31 Jul 2017 07:48:02 
-0700



On 7/31/17 3:12 AM, M Janani wrote:





Hi Team,


Could you please confirm whether the below mentioned formulas to compute Total 
WM and ventricular CSF are correct


1.Total White Matter = CerebralWhiteMatterVol + (lh+rh) Cerebellum White Matter



looks right, though some times people will include brainstem as part of WM


2.Total ventricular CSF = (lh + rh) Lateral-Ventricle + = (lh + rh)Inf-Lat-Vent 
+ (lh + rh)choroid-plexus + 3rd-Ventricle + 4th-Ventricle


There is a 5th ventricle (which I think is basically the aqueduct). There is 
also a segment called "CSF" (24) but can't remember what gets labeled as "CSF"



Thanks for your support.



Regards,



Janani







::DISCLAIMER::




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for the named recipient(s) only. E-mail transmission is not guaranteed to be 
secure or error-free as information could be intercepted, corrupted, lost, 
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The e mail and its contents (with or without referred errors) shall therefore 
not attach any liability on the originator or HCL or its affiliates. Views or 
opinions, if any, presented in this email are solely those of the author and 
may not necessarily reflect the views or opinions of HCL or its affiliates. Any 
form of reproduction, dissemination, copying, disclosure, modification, 
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consent of authorized representative of HCL is strictly prohibited. If you have 
received this email in error please delete it and notify the sender 
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Re: [Freesurfer] Total White matter and CSF value Calculation

[Douglas Greve]

On 7/31/17 3:12 AM, M Janani wrote:


Hi Team,

Could you please confirm whether the below mentioned 
formulas to compute Total WM and ventricular CSF are correct


1.Total White Matter  = CerebralWhiteMatterVol + (lh+rh) Cerebellum 
White Matter



looks right, though some times people will include brainstem as part of WM


2.Total ventricular CSF = (lh + rh) Lateral-Ventricle +  = (lh + 
rh)Inf-Lat-Vent + (lh + rh)choroid-plexus + 3rd-Ventricle + 4th-Ventricle


There is a 5th ventricle (which I think is basically the aqueduct). 
There is also a segment called "CSF" (24) but can't remember what gets 
labeled as "CSF"


Thanks for your support.

Regards,

Janani



::DISCLAIMER::


The contents of this e-mail and any attachment(s) are confidential and 
intended for the named recipient(s) only.
E-mail transmission is not guaranteed to be secure or error-free as 
information could be intercepted, corrupted,
lost, destroyed, arrive late or incomplete, or may contain viruses in 
transmission. The e mail and its contents
(with or without referred errors) shall therefore not attach any 
liability on the originator or HCL or its affiliates.
Views or opinions, if any, presented in this email are solely those of 
the author and may not necessarily reflect the
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dissemination, copying, disclosure, modification,
distribution and / or publication of this message without the prior 
written consent of authorized representative of
HCL is strictly prohibited. If you have received this email in error 
please delete it and notify the sender immediately.
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