External Email - Use Caution
Is it possible that CAT12 reports volumes after alignment to MNI space
(incorrect)? That is roughly the magnitude of the difference in total brain
volume.
Matt.
From: <freesurfer-boun...@nmr.mgh.harvard.edu> on behalf of Michael Mc Laughlin
<mich...@thecurate.com>
Reply-To: Freesurfer support list <Freesurfer@nmr.mgh.harvard.edu>
Date: Friday, June 9, 2023 at 3:14 AM
To: Freesurfer support list <Freesurfer@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] Huge difference between volumes for Freesurfer vs
CAT12
External Email - Use Caution
I have used both CAT12 and Freesurfer to segment a particular brain scan and
I get completely different volumes.
CAT12 Freesurfer 7.3.2
Left Cerebral WM(cc): 209 242
Left Cerebral Cortex (cc) 444 269
Left Lateral Ventricle (cc): 28 43
Right Cerebral WM (cc): 208 242
Right Cerebral Cortex (cc): 440 270
Right Lateral Ventricle (cc): 20 28
----------------------------------------------
Total 1350 1095
Total brain volume (cc): 1618 1309
Total Intercranial Volume N/A 1852
What could be causing this difference?
The brain scan was done with MPRAGE protocol with 176x256x256 voxels of size
1mmx0.976mmx0.976mm
Which one is correct?
The scan is of a normal adult male aged 62 with chronic migraine.
Resent a second time because table did not work well in either of previous
attempts
On Fri, Jun 9, 2023 at 9:00 AM Michael Mc Laughlin
<mich...@thecurate.com<mailto:mich...@thecurate.com>> wrote:
I have used both CAT12 and Freesurfer to segment a particular brain scan and I
get completely different volumes.
CAT12 (cc)
Freesurfer 7.3.2 (cc)
Left Cerebral WM(cc):
209
242
Left Cerebral Cortex (cc):
444
269
Left Lateral Ventricle (cc):
28
43
Right Cerebral WM (cc):
208
242
Right Cerebral Cortex (cc):
440
270
Right Lateral Ventricle (cc):
20
28
Total
1350
1095
Total volume (cc):
1618.09
1309
1852
What could be causing this difference?
The brain scan was done with MPRAGE protocol with 176x256x256 voxels of size
1mmx0.976mmx0.976mm
Which one is correct?
The scan is of a normal adult male aged 62 with chronic migraine.
Resent because table did not work well
Michael McLaughlin,
On Fri, Jun 9, 2023 at 8:19 AM Michael Mc Laughlin
<mich...@thecurate.com<mailto:mich...@thecurate.com>> wrote:
I have used both CAT12 and Freesurfer to segment a particular brain scan and I
get completely different volumes.
CAT12 (cc)
Freesurfer 7.3.2 (cc)
Left Cerebral White Matter volume(cc):
209
Left hemisphere cerebral white matter volume
242
Left Cerebral Cortex volume(cc):
444
Left hemisphere cortical gray matter volume
269
Left Lateral Ventricle volume(cc):
28
Left-Lateral-Ventricle
43
Right Cerebral White Matter volume(cc):
208
Right hemisphere cerebral white matter volume
242
Right Cerebral Cortex volume(cc):
440
Right hemisphere cortical gray matter volume
270
Right Lateral Ventricle volume(cc):
20
Right-Lateral-Ventricle
28
Total
1350
Total
1095
Total volume (cc):
1618.09
Brain Segmentation Volume
1309
Estimated Total Intracranial Volume
1852
What could be causing this difference?
The brain scan was done with MPRAGE protocol with 176x256x256 voxels of size
1mmx0.976mmx0.976mm
Which one is correct?
The scan is of a normal adult male aged 62 with chronic migraine.
Michael McLaughlin,
________________________________
The materials in this message are private and may contain Protected Healthcare
Information or other information of a sensitive nature. If you are not the
intended recipient, be advised that any unauthorized use, disclosure, copying
or the taking of any action in reliance on the contents of this information is
strictly prohibited. If you have received this email in error, please
immediately notify the sender via telephone or return mail.
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is
addressed. If you believe this e-mail was sent to you in error and the e-mail
contains patient information, please contact the Mass General Brigham
Compliance HelpLine at https://www.massgeneralbrigham.org/complianceline
<https://www.massgeneralbrigham.org/complianceline> .
Please note that this e-mail is not secure (encrypted). If you do not wish to
continue communication over unencrypted e-mail, please notify the sender of
this message immediately. Continuing to send or respond to e-mail after
receiving this message means you understand and accept this risk and wish to
continue to communicate over unencrypted e-mail.
