MANC.tracts
contains mesh of 22 MANC tracts in
non-symmetric space:
CVL_L, CVL_R, DLT_L, DLT_R, DLV_L, DLV_R, DMT_L, DMT_R, ITD_L, ITD_R,
MDA_L, MDA_R, type-I_MTD_L, type-I_MTD_R, type-II_MTD_L, type-II_MTD_R,
type-III_MTD_L, type-III_MTD_R, VLT_L, VLT_R, VTV_L, VTV_R