Question Posted 07/19/16:
For ADNI 1 database, when looking for the 1.5T scan and its corresponding 3T scan, do these two files share the same Roster ID?
Response posted 07/20/16 by Rita:
RID is the unique patient identifier in the ADNI files. You may use this (and VISCODE or VISCODE2) to link records for the same individual across files.