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Sam Beddar

SAM BEDDAR  

Profession:
Medical physicist specializing in radiation oncology

Birth:
Constantine, Algeria
June 28, 1959

Education:

University of Constantine, Constantine, Algeria, BS in Physics, 1980
University of Constantine, Constantine, Algeria, Diploma of Higher Studies in Theoretical Physics, 1981
University of Wisconsin, Madison, WI, MS in Medical Physics, 1984
University of Wisconsin, Madison, WI, PhD in Medical Physics, 1990

Certifications:

Canadian College of Physicists in Medicine, 1992
American Board of Radiology, Therapeutic Radiological Physics, 1994

Career:

Born in Constantine, Algeria, Professor Sam Beddar came to the University of Wisconsin driven to study medical physics. He concentrated his research on plastic scintillation dosimetry, publishing several seminal papers on the subject, and receiving his doctorate in 1990.

Dr. Beddar next joined Princess Margaret Hospital as a staff physicist, and then became an assistant professor at the University of Rochester Medical Center. Following a post at Albany Medical College he accepted a position at Cleveland Clinic in 1998, where he established an intraoperative radiation therapy program using the first commercially available Mobetron portable linear accelerator. In 2002, he became an associate professor at MD Anderson Cancer Center, where he became Chief of the Gastrointestinal Service, focusing his clinical attention on developing 4D-CT with intravenous contrast for the liver, respiratory-gated radiation therapy, and intraoperative radiation therapy.

Since entering the field of medical physics, the main focus of Dr. Beddar’s laboratory research has been in the field of scintillation dosimetry for radiation therapy, and he is a world-class expert on the subject. He has successfully received funding for seven grant proposals, including an NIH R01 grant. He has collaborated with scientists all over the world, including Canada, Australia, and France. Dr. Beddar has successfully published more than 50 papers in peer-reviewed journals and over 65 peer-reviewed abstracts in national and international meetings. He has been invited to give many international presentations all over the world, including Australia, Canada, France, Germany, Hong Kong, Spain, Sweden and Taiwan.

Dr. Beddar’s contributions to education include, first and foremost, his commitment to mentorship. Over the course of his career he has mentored a number of postdoctoral fellows, students, and residents. He has also been an active lecturer in radiation physics courses.

In service to the medical physics community, Dr. Beddar has acted in many capacities in the AAPM, including Associate Editor of Medical Physics. He chaired Task Group Number 72 on the clinical implementation of quality assurance for intraoperative radiation therapy using mobile electron linear accelerators, and has acted as a consultant on two others. In an effort to help others obtain external peer-reviewed funding, he has organized a number of grantsmanship workshops at AAPM meetings. Dr. Beddar has further demonstrated his commitment to the medical physics community by serving on the Radiation Therapeutics and Biology Study Section for the National Institutes of Health.

Publications [Up to 15]:

  1. Beddar AS, Mackie TR, and Attix FH. Cerenkov light generated in optical fibers and other light-pipes irradiated by electron beams. Phys Med Biol 37:925-935, 1992.
  2. Beddar AS, Mackie TR, and Attix FH. Water-equivalent plastic scintillation detector for high-energy beam dosimetry: Part I, Physical characteristics and theoretical considerations. Phys Med Biol 37:1883-1900, 1992.
  3. Beddar AS, Mackie TR, and Attix FH. Water-equivalent plastic scintillation detector for high-energy beam dosimetry: Part II, Properties and measurements. Phys Med Biol 37:1901-1913, 1992.
  4. Beddar AS, Domanovic MA, Kubo ML, Ellis RJ, Sibata CH, and Kinsella TJ. Mobile linear accelerators for intraoperative radiation therapy. AORN Journal 74:700-705, 2001.
  5. Beddar AS, Law S, Suchowerska N, and Mackie TR. Plastic scintillation dosimetry: Optimization of light collection efficiency. Phys Med Biol 48:1141-52, 2003.
  6. Beddar AS and Tailor RC. Calibration of low-energy electron beams from a mobile linear accelerator with plane-parallel chambers using both TG-51 and TG-21 protocols. Phys Med Biol 49:N105-N110, 2004.
  7. Beddar AS. Stability of a mobile electron linear accelerator system for intraoperative radiation therapy. Med Phys 32:3128-3131, 2005.
  8. Briere TM, Beddar AS, and Gillin MT. Evaluation of precalibrated implantable MOSFET radiation dosimeters for megavoltage photon beams. Med Phys 32:3346-3349, 2005.
  9. Beddar AS, Briere TM, Mourtada FA, Vassiliev ON, Liu HH, and Mohan R. Monte Carlo calculations of the absorbed dose and energy dependence of plastic scintillators. Med Phys 32:1265-1269, 2005.
  10. Beddar AS, Krishnan S, Briere TM, Wang X, Delclos ME, Ballo MT, Das P, Gould S, Horton JL, and Crane CH. The optimization of dose delivery for intraoperative high-dose-rate radiation therapy using curved HAM applicators. Radiother Oncol 78:207-212, 2006.
  11. Beddar AS, Biggs PJ, Chang S, Ezzell GA, Faddegon BA, Hensley FW, and Mills MD. Intraoperative radiation therapy using mobile electron linear accelerators: Report of AAPM Radiation Therapy Committee Task Group No. 72. Med Phys 33:1476-1489, 2006.
  12. Beddar AS, Kainz K, Briere TM, Tsunashima Y, Pan T, Prado K, Mohan R, Gillin M, and Krishnan S. Correlation between internal fiducial tumor motion and external marker motion for liver tumors imaged with 4D-CT. Int J Radiat Oncol Biol Phys 67:630-638, 2007.
  13. Archambault L, Beddar AS, Gingras L, Roy R, and Beaulieu L. Water-equivalent dosimeter array for small field external beam radiotherapy. Med Phys 34:1583-1592, 2007.
  14. Vedam S, Archambault L, Starkschall G, Mohan R, and Beddar S. Determination of prospective displacement-based gate threshold for respiratory-gated radiation delivery from retrospective phase-based gate threshold selected at 4D CT simulation. Med Phys 34:4247-4255, 2007.
  15. Archambault L, Polf JC, Beaulieu L, and Beddar S. Characterizing the response of miniature scintillation detectors when irradiated with proton beams. Phys Med Biol 53:1865-1876, 2008.

 

Awards:

 

American Association of Physicists in Medicine (AAPM) Activities:

 

Family:

Wife - Lilia Loucif Beddar