Hi everyone!<br><br>I&#39;m currently a summer student working at a lab 
which uses Freesurfer to measure hippocampal volumes.  I noticed that 
scanning the same patient first on a GE 3T (Multi-channel head coil) and
 then a GE 1.5T (single-channel head coil) 24 hours later resulted in a 
30% increase in the left hippocampus volume and a 18% increase for the 
right hippocampus based on the values in aseg.stats.  Can anyone please 
comment on this and explain the large discrepancies?  Thanks!<br><br>Jessica Liu<br>