Dr. Shellock is a member of the Sub-Committee on MRI safety issues for the American Society for Testing and Materials (ASTM) International. Additionally, he serves in advisory roles to government, industry, and other policy-making organizations. He has served multiple times on the ACR Subcommittee on MR Safety for the American College of Radiology and The Joint Commission (TJC) appointed him to the Diagnostic Ionizing Radiation and Magnetic Resonance Expert Panel.