9 Aug
2010
9 Aug
'10
8:16 a.m.
hi, expert, In a paper named "MRI of hippocampal volume loss in early Alzheimer's disease", I can see the average volume of hippocampus is 2133mm^3 for 279 normal controls with std=25 as well as 1631mm^3 for 330 AD subjects with std=34. However, in the aseg.stats, the volume of a normal subject is roughly 4000mm^3 or so, why the hippocampus volume of two samples differ so greatly due to age effect ( nearly about two times as much as the volume of the study). Thanks!