Hi Koen and FreeSurfers:
I have a 3T dataset that has undergone processing using 5.1. I have also run the Hippo sub fields command. Here are my results:
[root@NeuroImage-Gamma mri]# kvlQuantifyPosteriorProbabilityImages $FREESURFER_HOME/data/GEMS/compressionLookupTable.txt posterior_right_* posterior_Right-Hippocampus.mgz
volumeInVoxels: right_CA1: 2473.34 right_CA2-3: 7530.08 right_CA4-DG: 4160.99 right_fimbria: 520.14 right_hippocampal_fissure: 376.772 right_presubiculum: 2780.65 right_subiculum: 4230.04 Right-Hippocampus: 2277.69
My question is : Since these are "subfields" of the Hippocampus, should not the sum of all subregions be equal the volume of the Right Hippocampus?
Thanks so much!
Alan Francis
Beth Israel Deaconess Medical Center, BOSTON