- 2024Chair and lead author of criteriaRevised Criteria for Diagnosis and Staging of Alzheimer's Disease: Alzheimer's Association Workgroup 
- 2024MemberAlzheimer's Association Workgroup on Amyloid Related Imaging Abnormalities 
- 2019 - presentMemberBrain Health Steering Committee, University of Pittsburgh, National Football League 
- 2018Chair and lead author of criteriaRevision of Diagnostic criteria for Alzheimer's disease - National Institute on Aging and Alzheimer's Association 
- 2017 - presentMemberExternal Advisory Committee: University of Wisconsin, Madison, P30, Alzheimer's Disease Research Center 
- 2016ad hocNational Institute on Aging Board of Scientific Counselors, Laboratory of Behavioral Neuroscience Internal Research Program review committee 
- 2014 - 2016MemberInstitute of Medicine, Committee on Gulf War and Health 
- 2014 - 2017MemberDistinguished Investigator Award Selection Committee 
- 2013MemberInstitute of Medicine, Developing Standards for Diffusion Magnetic Resonance Imaging 
- 2013 - 2016Awards Committee MemberInternational Society of Magnetic  Resonance in Medicine 
- 2013 - 2014MemberHuman Connectome Project, External Advisory Committee 
- 2012MemberNational Alzheimer's Project Act (NAPA) Expert Advisory Board 
- 2012MemberCenter for Studies on Prevention of Alzheimer's Disease Scientific Advisory Board, J Breitner PI, McGill Univ 
- 2011 - 2014MemberBoard of Directors University of Minnesota - N. Bud Grossman Center for Memory Research and Care, K. Ashe PI 
- 2011MemberRevision of Diagnostic criteria for Alzheimer's disease - Alzheimer's Association, National Institute on Aging, and National Institute of Neurological Disorders and Stroke: Criteria for Alzheimer's disease Dementia and Pre-clinical Workgroups 
- 2010 - 2015MemberCritical Path Institute (CAM-D) - Imaging Work Group 
- 2010 - 2011MemberAlzheimer's Association Vasogenic Edema (ARIA) Work Group 
- 2010MemberAlliance for Aging Research (ACT-D Coalition) AD Biomarkers Work Group 
- 2009 - 2016Committee on Standards in Quantitative MRInternational Society of Magnetic  Resonance in Medicine 
- 2009 - 2012MemberScientific Advisory Committee: P41 Research Resource 
- 2009MemberData Safety and Monitoring Board by NIA for ADCS Nerve Growth Factor trial 
- 2008MemberMinnesota Partnership for Biotechnology and Medical Genomics review committee 
- 2007 - 2008Research Award Committee ChairAmerican Society of Neuroradiology 
- 2004 - 2021MemberExternal Advisory Committee: UC Davis P30, Alzheimer's Disease Center 
- 2002 - 2005ChairDiagnostic Radiology Research Committee, Mayo Clinic Rochester Committees 
- 2002 - 2005MemberInternational Society of Magnetic  Resonance in Medicine 
- 2002 - 2005MemberDiagnostic Radiology Executive Committee 
- 2002MemberAdvisory Committee: "National Institute on Aging Neuro-imaging Initiative" 
- 2001 - 2010MemberExternal Advisory Committee: UCLA/UC Davis P01-AG12435 
- 2001 - presentMemberExternal Advisory Committee: Washington University P01-AG03991 
- 1998 - 2011Research Committee MemberAmerican Society of Neuroradiology 
- 1998 - 1999MemberEquipment Subcommittee, Mayo Clinic Rochester Committees 
- 1997MemberInstitutional Clinical Research Subcommittee, Mayo Clinic Rochester Committees 
- 1993 - 2002Vice ChairDiagnostic Radiology Research Committee, Mayo Clinic Rochester Committees 
- 1986 - 2006Committee MemberDiagnostic Radiology Research Committee, Mayo Clinic Rochester Committees 
- 1986 - 1990DirectorNeuroradiology Fellowship, Division of Neuroradiology, Department of Radiology