[Mristudio-users] CC in elderly patients

[Jun Yi Wang]

Hi Dafna,

I only have a few subjects in 80s, but I have subjects from 16-65 years old.  I do see a substantial decrease of the amount of corpus callosum fibers projecting towards the cortex as we age.  Some fibers still project to the cortex although a lot of them project downwards instead.  I don't know whether this is caused by aging or DTI artifacts such as the termination of line propagation because of the lower FA or the crossing fiber issue.

Jun Yi Wang

Postdoctoral Research Scholar
Fragile X Research and Treatment Center
UC Davis M.I.N.D. Institute
530.747.3808 (Lab)



________________________________
From: Dafna Ben Bashat <dafnab at tasmc.health.gov.il>
To: mristudio-users at mristudio.org
Sent: Thu, March 11, 2010 3:19:20 AM
Subject: [Mristudio-users] CC in elderly patients

 
Hi
all,
We
are currently working on data from elderly stroke/TIA patients.  
In
many of the TIA patients, who have good DTI data, for some reason the CC does
not built well, we can't see the fan. 
This
is not due to incorrect directions (the CST is built OK).
ROI
measurements give reasonable values. We even changed the flip-angel for the
FACT, and got the same results.
Any
suggestions? Is it a known phenomenon in elderly / stroke / TIA patients? 
 
Thank
you in advance.
 
Dafna 
 
 
Dafna Ben Bashat Ph.D. 
 
Senior Physicist, In charge of MR systems
The Wohl institute for Advanced Imaging
Brain Imaging Center
Tel Aviv Sourasky Medical Center
 
Phone: 972-3-6973953
(o)          Fax: 972-3-6973080
 
       972-52-4262515
(m)        Mail: dafnab at tasmc.health.gov.il


      
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.mristudio.org/pipermail/mristudio-users/attachments/20100311/acb7d3e1/attachment-0001.html