[Freesurfer] Ventricular structures - exact definitions

Hello,

as I am interested in the volume of ventricular structures in the brain, I would like to more precisely understand the labels given by /stats/aseg.stats in Freesurfer.

Most importantly, what is the precisely defined difference between Left-Lateral-Ventricle and Left-Inf-Lat-Vent? Would you always combine these two in a volumetric study? Why are they separately segmented? And what exactly is the 5th-Ventricle? Less importantly, how exactly do you define CC_Posterior, CC_Mid_Posterior, CC_Central, CC_Mid_Anterior, and CC_Anterior?

Is there a paper or homepage defining these exactly? Any help appreciated!

Thanks a lot, Meike