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Working Group on Review and Extension of the TG-61 protocol (WGTG61)

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Activities

The goal of the working group is to provide ongoing oversight of kilovoltage x-ray beam reference dosimetry. This will include monitoring current literature and identifying where new guidance or additional data are warranted to facilitate accurate dosimetry measurements. Specific considerations will be given to the calibration practices within the Accredited Dosimetry Calibration Laboratories (ADCL) network and the suitability of reference dosimetry protocol(s) for end users.
By-Laws:Not Referenced.Rules: Not Referenced.
Standing?This is not a standing committee.
Approved Date(s):2/15/2026
Committee Keywords: No Keywords Entered

Board of Directors
Science Council
Therapy Physics Cmte  [Status]
Calibration Laboratory Accreditation SC  [Status]
Working Group on Review and Extension of the TG-61 protocol  [Status]

» Conflict of Interest report for WGTG61
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Chair

Wesley Culberson
Workgroup Chair

2026 Roster

(dates shown below are start and end dates of position.)

= complete and up-to-date
= up-to-date but expires soon
= incomplete or out of date conflict of interest statement.

VOTING AppointmentsThere are 12 voting members.

up-to-dateMagdalena Bazalova-Carter, PhD

9/10/2026 - 12/31/2029 Member
up-to-dateWesley S. Culberson, PhD

2/15/2026 - 12/31/2028 Workgroup Chair

up-to-dateRyan Gardner

9/10/2026 - 12/31/2029 Member
up-to-dateMichael P. Grams, PhD

9/10/2026 - 12/31/2029 Member

up-to-dateRobin F. Hill, PhD

9/10/2026 - 12/31/2029 Member
up-to-dateBenjamin A. Insley, PhD, BS

9/10/2026 - 12/31/2029 Member

up-to-dateErnesto Mainegra-Hing, PhD

9/10/2026 - 12/31/2029 Member
up-to-dateBryan R. Muir, PhD

9/10/2026 - 12/31/2029 Member

up-to-dateAutumn Rasmussen, MS

2/15/2026 - 12/31/2028 Work Group Vice Chair
up-to-dateJames J. Sohn, PhD

9/10/2026 - 12/31/2029 Member

up-to-dateChristopher J. Tien, PhD

9/10/2026 - 12/31/2029 Member
up-to-dateAshok Tiwari, PhD

9/10/2026 - 12/31/2029 Member
NON-VOTING AppointmentsThere are 4 non-voting members and guests.

up-to-dateStephen F. Kry, PhD

2/15/2026 - 12/31/2026 Consultant - MDACC Representative (nonvoting)
up-to-dateJucilene Stabin

2/15/2026 - 12/31/2026 Consultant - K&S Representative (nonvoting)

up-to-dateCsilla I. Szabo-Foster, PhD

2/15/2026 - 12/31/2026 Consultant - NIST Representative (nonvoting)
up-to-datePaula Toroi

10/7/2026 - 12/31/2027 Consultant (nonvoting)
HQ Team Appointed to CommitteeThere are 0 staff.



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