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GEOFFREY S. IBBOTT Geoffrey S. Ibbott

Occupation: Medical physicist specializing in radiation oncology.

Born: London , England , March 23, 1949

Education:
B.A, Physics, University of Colorado, 1979
M.S, Medical Physics, University of Colorado Health Sciences Center, 1981
Ph.D., Radiation Biology, Colorado State University, 1993

Certifications:
American Board of Radiology, Therapeutic Radiological Physics, 1983
American Board of Radiology, Diagnostic and Medical Nuclear Physics, 1994

Career:
Dr. Ibbott began his career in medical physics immediately upon graduating from high school in 1967. He worked for a summer, went away for a year of college, and then returned for a second summer. At the end of the second summer, Dr. Ibbott remained in this position while continuing his education part-time. He was first given the title of Medical Physicist in 1974, and remained in this position, with a faculty appointment at the level of Senior Instructor, until 1990. In mid 1990, Dr. Ibbott moved to Yale-New Haven Hospital, where he was a Lecturer and Medical Physicist until 1994. In March 1994, Dr. Ibbott moved to Lexington, Kentucky to become Assistant Professor and Director of Medical Physics at the University of Kentucky Medical Center. He was promoted in 1998 to Associate Professor. In January 2001 Dr. Ibbott moved to the U. T. M. D. Anderson Cancer Center in Houston, Texas and became Associate Professor and Chief, Section of Outreach Physics, Department of Radiation Physics.

While at the University of Colorado Heath Sciences Center, Yale-New Haven Hospital, and the University of Kentucky Medical Center, Dr. Ibbott maintained a strong clinical orientation. Upon moving to M. D. Anderson Cancer Center, he assumed the role of Director of the Radiological Physics Center, an NCI-funded resource to support multi-institutional cooperative group clinical trials. As of August 2001, Dr. Ibbott has been the principal investigator of the NCI grant supporting the RPC, and in 2004 won a six-year competing renewal of the grant.

Dr. Ibbott’s research interests include the radiation response of normal tissues, and the development of a polymer gel dosimeter. Since arriving at M. D. Anderson Cancer Center, he has pursued the introduction of the polymer gel dosimeter into anthropomorphic phantoms for use by the RPC in assessing the quality of advanced technology treatment techniques. In addition to this, Dr. Ibbott’s interests include quality assurance for multi-institutional clinical trials.

Throughout his career, Dr. Ibbott has held a strong interest in education. He was coordinator of the graduate program at the University of Colorado Health Sciences Center, clinical coordinator of the graduate program at the University of Kentucky Medical Center, and is a course coordinator at M. D. Anderson Cancer Center. In addition, he is co-author of Radiation Therapy Physics, a medical physics textbook now in its third edition.

Publications [Up to 15]:

  1. Ibbott GS, Hendee WR. Beam-Shaping Platforms and Skin-Sparing Advantages of Cobalt-60 Radiation. Am. I. Roentgenol 108:193-6, 1970.
  2. Ibbott GS, Hendee WR. Master’s Level Graduate Training in Medical Physics at the University of Colorado Health Sciences Center. Am. J. Phys. 48:461-4, 1980.
  3. Maryanski MJ, Schulz RJ, Ibbott GS, Gatenby JC, Xie J, Horton D, Gore JC. Magnetic Resonance Imaging of Radiation Dose Distributions Using a Polymer Gel Dosimeter. Phys. Med. Biol. 39:1437-55, 1994.
  4. Maryanski MJ, Ibbott GS, Eastman P, Schulz RJ, Gore JC. Radiation therapy dosimetry using magnetic resonance imaging of polymer gels. Med. Phys. 23:699-705, 1996.
  5. Ibbott GS, Attix FH, Slowey TW, Fontenla DP, Rozenfeld ML, Uncertainty of Calibrations at the Accredited Dosimetry Calibration Laboratories. Med. Phys., 24:1249-54, 1997.
  6. Ibbott GS, Maryanski MJ, Eastman P, Holcomb SD, Zhang Y, Avison RG, Sanders M, Gore JC. Three Dimensional Visualization and Measurement of Conformal Dose Distributions Using Magnetic Resonance Imaging of BANG Polymer Gel Dosimeters. Int. J. Radiat. Oncol. Biol. Phys. 38:1097-1103, 1997.
  7. Williamson JF, Coursey BM, DeWerd LA, Hanson WF, Nath R, Ibbott GS. Guidance to users of Nycomed Amersham and North American Scientific, In., 1-125 Interstitial Sources: Dosimetry and calibration changes: Recommendations of the American Association of Physicists in Medicine Radiation Therapy Committee Ad Hoc Subcommittee on Low-Energy Seed Dosimetry. Med. Phys. 26:570-3, 1999.
  8. Williamson JF, Coursey BM, DeWerd LA, Hanson WF, Nath R, Ibbott GS. On the use of apparent activity (A app) for treatment planning of 125I and 103Pd interstitial brachytherapy sources: Recommendations of the American Association of Physicists in Medicine Radiation Therapy Committee Subcommittee on Low-Energy Brachytherapy Source Dosimetry. Med. Phys. 26: 2529-30, 1999.
  9. Williamson, JF, Coursey BM, DeWerd LA, Hanson WF, Nath R, Rivard MJ, Ibbott GS. Recommendations of the American Association of Physicists in Medicine on 103Pd interstitial source dosimetry: Implications for dose specification and prescription. Med. Phys. 27:634-42, 2000.
  10. Tailor RC, Hanson WF, Ibbott GS. TG-51 Experience from 150 institutions, common errors, and helpful hints. Journal of Applied Clinical Medical Physics 4:102-11, 2003.
  11. Rivard MJ, Coursey BM, DeWerd LA, Hanson WF, Huq MS, Ibbott GS, Mitch MG, Nath R, Williamson JF. Update of AAPM Task Group No. 43 Report: A revised AAPM protocol for brachytherapy dose calculations. Medical Phys. 31:633-74, 2004.
  12. DeWerd LA, Huq MS, Das IJ, Ibbott GS, Hanson WF, Slowey TW, Williamson JF, Coursey, BM. Procedures for establishing and maintaining consistent air-kerma strength standards for low-energy, photon-emitting brachytherapy sources: Recommendations of the Calibration Laboratory Accreditation Subcommittee of the American Association of Physicists in Medicine. Med. Phys. 31:675-81, 2004.
  13. Followill DS, Davis DS, Ibbott GS. Comparison of Electron Beam Characteristics from Multiple Accelerators. Int. J. of Radiat. Oncol. Biol. Phys. 59:905-10, 2004.
  14. Molineu A, Followill DS, Balter PA, Hanson WF, Ibbott, GS. Design and Implementation of an Anthropomorphic Quality Assurance Phantom for Intensity Modulated Radiation Therapy. Int. J. of Radiat. Oncol. Biol. Phys., 2004. (In press)
  15. Williamson JF, Butler W, DeWerd LA, Huq MS, Ibbott GS, Li Z, Mitch MG, Nath R, Rivard MJ, Todor D. Recommendations of the American Association of Physicists in Medicine regarding the Impact of Implementing the 2004 Task Group 43 report on Dose Specification for 103Pd and 125I Interstitial Brachytherapy. In review, Med. Phys., 2004.

Awards:

 

American Association of Physicist in Medicine (AAPM) Activities:
Member, American Association of Physicists in Medicine, 1972–present
Member, Board of Directors, 1982–1984
President, Rocky Mountain Chapter, 1983
Chairman, AAPM Committee of Academic Program Directors, 1985–1986
Member, AAPM Radiation Therapy Committee, 1976–1979
Member, AAPM Professional Information and Clinical Relations Committee, 1980–1983
Member, AAPM Hyperthermia Committee, 1983–1986
Member, AAPM Professional Council, 1983–1986
Member, AAPM Education Council, 1987–1990
Member, AAPM Program Committee, 1989–1991
President, Connecticut Chapter, 1993–1994
Member, AAPM Program Committee, 1993-1997
Chairman, AAPM Professional Council, 1993–1997
Board of Directors, 1995-1997
President, Ohio River Valley Chapter, 1997
Chair, AAPM Subcommittee on Accreditation of Regional Calibration Laboratories, 1996–2000
Member, AAPM Executive Committee, 1998–2000
President, AAPM, 1999
Member, AAPM Subcommittee on Dosimetry of Low-Energy Brachytherapy Sources, 1999–present
Chair, AAPM Board of Directors, 2000
Chair, AAPM Subcommittee on QA Physics of Cooperative Trials, 2001-present
Member, AAPM Radiation Therapy Committee, 2001-present
Member AAPM Newsletter Editorial Board, 2001-present
Member, AAPM Subcommittee on Accreditation of Regional Calibration Laboratories, 2001-present
Member, AAPM Nominating Committee, 2004
Member, AAPM Government and Regulatory Affairs Committee, 2004-present
Member, AAPM Awards and Honors Committee, 2005-present

American Board of Radiology (ABR)
Member, Radiation Oncology written examination committee, 1994–present
Oral Examiner in Radiological Physics, 1996, 1998, 2000, 2002, 2003, 2005

American College of Radiology (ACR) Activities
Member, American College of Radiology, 1984-present
Member, Government and Public Relations Committee, ACR Commission on Radiation Oncology, 1991–1997
Member, Committee on Research and Technology Assessment, ACR Commission on Radiation Oncology, 1993–1996
Member, Committee on Coding and Nomenclature, ACR Commission on Economics, 1993–1999
Member, Committee on Radiologist Resources, ACR Commission on Human Resources, 1993–2000
Member, ACR Commission on Medical Physics, 1993–2002
Member, Committee on Quality Assurance, ACR Commission on Standards and Accreditation, 1995–2001
Councilor at Large, 1996-2001
Member, ACR Practice Expense Advisory Committee, 2000
Member, Joint ACR/ASTRO Committee on Economics, 2000
Chair, Government and Public Relations Committee, ACR Commission on Medical Physics, 2000–2002
Member, ACR Council Steering Committee, 2004-present

American Society for Therapeutic Radiology and Oncology (ASTRO)
American Society for Therapeutic Radiology and Oncology, Member, 1980–present
Member, ASTRO Federal Legislative Oversight Committee, 1991–1996
Member, ASTRO Outcomes Research Committee, 1998–2000
Member, ASTRO Compliance Committee, 1999–2000
Member, ASTRO Government Relations Committee, 2002–present

Radiological Society of North America (RSNA)
Member, RSNA Scientific Program Committee/Physics Subcommittee, 2002–2004
Member, RSNA Refresher Course Committee, 2004-present

Additional Professional Organization Activities:
American Association of Physics Teachers, Member, 1970–1980
Health Physics Society, Member, 1971–present
Physicist-Surveyor for Patterns of Care Outcome Surveys, Member, 1977-1978, 1983, 1985
North American Hyperthermia Group, Member, 1983–1990
Radiation Research Society, Member, 1983–present
Colorado Radiological Society, Member, 1984–1990
International Electrotechnical Commission - U.S. Technical Advisory Group, IEC 62C:
       Member, 1990-present
       Chair of US TAG, 1993-present
       Chair of 62C, 2004-present
Radiological Society of Connecticut, Member, 1991–1994
Joint Commission on Accreditation of Healthcare Organizations from:
      Trilateral Committee (AAPM, ACMP, ACR-COP), Liaison, 1994–1997


Kentucky Medical Society, Member, 1994–2000
Council of Scientific Society Presidents, Member, 1998–2000
Texas Radiological Society, Member 2001-present
President, Council on Ionizing Radiation Measurements and Standards, 2002–2003

Civic Activities:
None

Avocations and Special Interests:
Sailing, ballroom dancing, music, travel.

Family:
Spouse – Diane (married 1989)
Son – Brian (born 1969)
Grandson – Tristan (born 1997)