- 2020
Chairman of the BoardAmerican Association of Physicists in Medicine
- 2019
PresidentAmerican Association of Physicists in Medicine
- 2018
Voting MemberAd Hoc Committee to Help Integration of Effect, American Association of Physicists in Medicine
- 2018 - present
MemberAd Hoc Committee on Liaisons and Appointments, American Association of Physicists in Medicine
- 2018 - 2020
MemberAdministrative Council, American Association of Physicists in Medicine
- 2018 - 2020
MemberCorporate Advisory Board, American Association of Physicists in Medicine
- 2018 - 2020
MemberEducation Council, American Association of Physicists in Medicine
- 2018 - 2020
MemberExecutive Committee, Board of Directors, American Association of Physicists in Medicine
- 2018 - 2020
MemberProfessional Council, American Association of Physicists in Medicine
- 2018 - 2020
MemberScience Council, American Association of Physicists in Medicine
- 2018
President ElectAmerican Association of Physicists in Medicine
- 2018
MemberStrategic Planning Committee of the Board, Board of Directors, American Association of Physicists in Medicine
- 2017 - 2018
MemberAlliance for Quality Computed Tomography (AQCT), American Association of Physicists in Medicine
- 2017
ChairComputed Tomography Subcommittee, American Association of Physicists in Medicine
- 2017 - present
MemberSPIE - The International Organization for Optics and Photonics
- 2016 - present
MemberTask Group No. 299 Quality Control in Multi-Energy Computed Tomography (MECT), Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2016 - present
MemberTask Group No. 293 Size Specific Dose Estimate (SSDE) for Head CT, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2016 - 2019
ChairTask Group No. 291 Educational Report on Multi-Energy CT, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2016 - present
ChairMayo Graduate School, BMEP Admissions Subcommittee
- 2016 - present
MemberTask Group No. 246 Task Group on Patient Dose from Diagnostic Radiation, Imaging Physics Committee, American Association of Physicists in Medicine
- 2015 - present
MemberPublic Information Advisors Network, Radiological Society of North America
- 2015 - 2016
Co-ChairAlliance for Quality Computed Tomography (AQCT), American Association of Physicists in Medicine
- 2015 - 2016
MentorScience Council Associates Mentorship Program, American Association of Physicists in Medicine
- 2015 - present
Associate EditorBoard of Associate Editors, American Association of Physicists in Medicine
- 2015 - present
MemberWorking Group on IEC Coordination, American Association of Physicists in Medicine
- 2014
ChairWorking Group on IEC Coordination, American Association of Physicists in Medicine
- 2013 - present
Board MemberCenter for the Assessment of Radiological Sciences
- 2013 - present
Board MemberInternational Society for Computed Tomography
- 2012 - 2017
MemberTechnology Assessment Committee, American Association of Physicists in Medicine
- 2012 - 2017
MemberScience Council, American Association of Physicists in Medicine
- 2012 - 2014
MemberTechnical Electronic Product Radiation Safety Standards Committee of the Medical Devices Advisory Committee, Food and Drug Administration
- 2011 - 2017
MemberImaging Physics Committee, American Association of Physicists in Medicine
- 2011 - 2014
ChairTask Group No. 220 Patient Size Metrics for CT, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2011 - 2016
Vice ChairComputed Tomography Subcommittee, American Association of Physicists in Medicine
- 2011 - 2014
ChairCT Physics Section, Department of Radiology
- 2011
Co-ChairScience Council, American Association of Physicists in Medicine
- 2011
Member3rd vice president of RSNA, Radiological Society of North America
- 2011
Course DirectorAnnual Meeting Committee, American Association of Physicists in Medicine
- 2011
ConsultantScientific Committee 4-3, National Council on Radiation Protection and Measurements
- 2010 - 2015
ChairWorking Group of Standardization of CT Nomenclature and Protocols, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2010 - 2011
MemberTask Group No. 204 Development and Dissemination of Pediatric CT Dose Correction Factors, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2010 - present
MemberTask Group No. 200 CT Dosimetry Phantoms and the Implementation of AAPM Report No. 111, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2010 - 2016
Abstract ReviewerRadiological Society of North America
- 2010 - 2015
MemberScientific Program Physics Subcommittee, Radiological Society of North America
- 2010 - present
Emeritus MemberNational Council on Radiation Protection and Measurements
- 2009 - present
Full MemberMayo Clinic Center for Translational Science Activities
- 2008 - 2009
Associate MemberMayo Clinic Center for Translational Science Activities
- 2007 - present
MemberCommittee on the Assessment of Thromboembolic Disease in Pregnancy, American Thoracic Society
- 2007 - 2012
Consultant to the Editor of RadiologyRadiological Society of North America
- 2007 - 2008
Continuing Medical Education Course DirectorAnnual Meeting Committee, American Association of Physicists in Medicine
- 2007 - present
MemberRadLex CT Committee, Radiological Society of North America
- 2007 - present
MemberMedical Physics Editorial Board, American Association of Physicists in Medicine
- 2006 - 2010
MemberTask Group No. 111 Future of CT Dosimetry, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2006 - present
MemberCardiac CT Subcommittee, Committee on CT Accreditation, American College of Radiology
- 2005 - present
Founding MemberSociety of Cardiovascular Computed Tomography
- 2005 - 2017
MemberComputed Tomography Subcommittee, American Association of Physicists in Medicine
- 2005 - 2015
MemberCT Operations Group, Department of Radiology
- 2005 - 2007
MemberResearch Committee, Department of Radiology
- 2005 - 2006
MemberTask Group No. 102 CTDI Values for Various CT Scanners, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2005 - 2006
MemberTask Group No. 110 CT Noise Metrics, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2004 - present
DirectorCT Clinical Innovation Center, Department of Radiology
- 2003 - present
MemberAdvisory Panel on Imaging Sciences, Scientific Council, American Heart Association
- 2003 - 2009
Council MemberNational Council on Radiation Protection and Measurements
- 2003 - 2005
Continuing Education Course Co-DirectorAnnual Meeting Committee, American Association of Physicists in Medicine
- 2003 - present
Overseas Affiliate MemberInstitute of Physics and Engineering in Medicine
- 2003 - present
MemberPhysics Committee, Minnesota Radiological Society
- 2002 - 2006
Abstract ReviewerRadiological Society of North America
- 2002
MemberSubcommittee on Revisions to CT Equipment Testing Standard, American College of Radiology
- 2002 - present
DelegateInternational Electrotechnical Commission (IEC), American Association of Physicists in Medicine
- 2001 - 2007
ChairTask Group No. 23 CT Dosimetry, Computed Tomography Subcommittee, American Association of Physicists in Medicine
- 2001 - 2007
MemberPhysics Subcommittee, Program Committee, Radiological Society of North America
- 2001
ConsultantTask Group No. 66 Quality Assurance for CT Simulations, American Association of Physicists in Medicine
- 2001 - present
MemberAmerican Heart Association
- 2001 - present
MemberMaintenance Team 30 (X-Ray Computed Tomography), International Electrotechnical Commission
- 2001 - present
MemberAmerican National Standards Institute
- 2001 - present
MemberU.S. National Committee, American National Standards Institute
- 2001 - present
MemberDiagnostic Imaging Technical Advisory Group for IEC 62B, American National Standards Institute
- 2001 - present
MemberInterdisciplinary Working Group, Council on Cardiovascular Radiology and Intervention, American Heart Association
- 2000 - 2002
Consultant, Past ChairMedical Physics Education of Physicians Committee, American Association of Physicists in Medicine
- 2000 - present
MemberConference of Radiation Control Program Directors
- 1999 - 2001
Elected Representative for General MembershipBoard of Directors, American Association of Physicists in Medicine
- 1999 - 2000
ChairMedical Physics Education of Physicians Committee, American Association of Physicists in Medicine
- 1998 - 2012
MemberCommittee on CT Accreditation, American College of Radiology
- 1998 - 2012
MemberPhysics Subcommittee, Committee on CT Accreditation, American College of Radiology
- 1998 - 2007
ChairPhysics Subcommittee, Committee on CT Accreditation, American College of Radiology
- 1998 - 2000
MemberExecutive Committee, Education Council, American Association of Physicists in Medicine
- 1998 - 2000
Vice ChairEducation Council, American Association of Physicists in Medicine
- 1998 - 2000
ChairRadiobiology Teaching Slides Task Group, Medical Physics Education of Physicians Committee, American Association of Physicists in Medicine
- 1998 - 2000
ChairRadiation Effects and Protection Lecture for Medical Students Task Group, Medical Physics Education of Physicians Committee, American Association of Physicists in Medicine
- 1998 - 2000
MemberCommittee on Education (Commission on Medical Physics), American College of Radiology
- 1998
Grant ReviewerResearch and Education Fund, Radiological Society of North America
- 1997 - 2006
MemberAmerican Association for Women Radiologists
- 1997 - 2001
Test Questions ContributorRadiology Physics Written Exam Committee, American Board of Radiology
- 1997 - 2001
Test Questions EvaluatorRadiology Physics Written Exam Committee, American Board of Radiology
- 1997 - 2001
MemberAmerican Board of Radiology
- 1997 - 2001
MemberRadiology Physics Written Exam Committee, American Board of Radiology
- 1997
MemberWomen's Advisory Council, Mayo Clinic Rochester Committees
- 1996 - 2000
MemberEducation Council, American Association of Physicists in Medicine
- 1996 - 2000
MemberMultimedia Educational Materials Publication Task Group, Education Council, American Association of Physicists in Medicine
- 1996 - 1999
ChairTraining of Radiologists Committee, American Association of Physicists in Medicine
- 1995 - 1998
MemberVisual Teaching Aids for Radiology Residents Task Group, Training of Radiologists Committee, American Association of Physicists in Medicine
- 1995 - 1996
ChairPhysics Tutorial for Residents Subcommittee, American Association of Physicists in Medicine
- 1995 - 1996
MemberRefresher Course Committee, Radiological Society of North America
- 1994 - 2000
MemberRadiology Engineering Committee, Department of Radiology
- 1994 - 1996
MemberEducation Coordination Subcommittee, Radiological Society of North America, American Association of Physicists in Medicine
- 1994 - present
Scientific Session ModeratorRadiological Society of North America
- 1993 - 2007
ChairCT Technical Support Committee, Department of Radiology
- 1993 - 1999
MemberTraining of Radiologists Committee, American Association of Physicists in Medicine
- 1993 - 1997
MemberPhysics Tutorial for Residents Subcommittee, American Association of Physicists in Medicine
- 1993 - present
MemberCT Technical Support Committee, Department of Radiology
- 1992 - 1996
ChairTechnical Exhibits Meeting Notes Committee, Radiological Society of North America
- 1992 - 1995
ChairImage Processing and Analysis Committee, Department of Radiology
- 1992 - 1995
MemberImage Processing and Analysis Committee, Department of Radiology
- 1991 - 2003
MemberBody CT Leadership Committee, Department of Radiology
- 1991 - 1999
MemberEducation Committee, Department of Radiology
- 1991 - 1996
MemberTechnical Exhibits Meeting Notes Committee, Radiological Society of North America
- 1991 - 1996
MemberDigital Imaging Transmission Committee, Department of Radiology
- 1991 - 1995
MemberPhysics Committee, Minnesota Radiological Society
- 1991 - 1992
MemberComputer Committee, Department of Radiology
- 1991
MemberRadiology Networking Task Force, Department of Radiology
- 1991 - present
MemberAmerican College of Radiology
- 1991 - present
MemberHealth Physics Society
- 1991 - present
MemberMinnesota Radiological Society
- 1991 - present
MemberRadiological Society of North America
- 1991 - present
MemberSigma Xi, The Scientific Research Society
- 1991 - present
MemberNorth Central Chapter, American Association of Physicists in Medicine
- 1986 - present
MemberAmerican Association of Physicists in Medicine