To participate in the Challenge, participants must register with accurate information. The participants must provide a team name, a team leader, all other team members, and information for each participant: full name, e-mail address, ISMRM membership status, and optionally, affiliation.

Each individual may belong to more than one team, but no two teams may have the same team leader, and identical membership. Identities of participants are not disclosed during the Challenge. The identities of the winning team are disclosed at the end of the Challenge.