Skip to Content

'
Sam Beddar, Ph.D., DABR, CRE, FCCPM, FAAPM

Present Title & Affiliation

Primary Appointment

Professor, Tenured Clinical Faculty Appointment, Department of Radiation Physics - Patient Care, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
Service Chief, Gastrointestinal Service, Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX

Dual/Joint/Adjunct Appointment

Professeur Adjoint, Département de Physique, Génie Physique et Optique, Université Laval, Québec City, Québec, Canada
Faculty Member, Graduate School of Biomedical Sciences, University of Texas, Houston, TX

Office Address

The University of Texas MD Anderson Cancer Center
1515 Holcombe Blvd.
Unit Number: 94
Houston, TX 77030
Room Number: Y2.5330
Phone: (713) 563-2609
Fax: (713) 563-2479

Education & Training

Degree-Granting Education

1990 University of Wisconsin, Madison, WI, Ph.D., Medical Physics
1984 University of Wisconsin, Madison, WI, MS, Medical Physics
1981 University of Constantine, Constantine, Algeria, MS, Theoretical Physics
1980 University of Constantine, Constantine, Algeria, BS, Physics

Board Certifications

1994 American Board of Radiology
1992 Canadian College of Physicists in Medicine

Experience/Service

Academic Appointments

Professor, Non-Tenure Clinical Track Appointment, Department of Radiation Physics - Patient Care, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 9/2008-8/2011
Associate Professor of Radiation Oncology, Department of Radiation Physics - Patient Care, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 5/2002-6/2008
Visiting Professor, Department of Radiation Oncology, Royal Prince Alfred Hospital, Sydney, Australia, 3/2002-5/2002
Assistant Professor, Secondary Appointment, Physics Department, Case Western Reserve University, Cleveland, OH, 8/1999-3/2002
Assistant Professor, Department of Radiation Oncology, University Hospitals of Cleveland, School of Medicine, Case Western Reserve University, Cleveland, OH, 10/1998-3/2002
Assistant Professor, Department of Radiation Oncology, Albany Medical College, Albany, NY, 12/1996-10/1998
Assistant Professor, Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, 8/1993-12/1996
Staff Medical Physicist, Department of Clinical Physics, The Ontario Cancer Institute, The Princess Margaret Hospital, Toronto, Canada, 12/1990-8/1993

Institutional Committee Activities

Chair, Odyssey Program Advisory Committee, 9/2010-present
Senator (elected), Faculty Senate Tenure Issues Committee, 9/2010-present
Co-Chair, Odyssey Program Advisory Committee, 12/2009-8/2010
Senator (elected), Faculty Senate, 9/2009-8/2012
Member, Knudson Award Committee, 2009-present
Member, Physicist-Scientist Oversight Committee - Department of Radiation Physics - Research, 9/2008-present
Member, Odyssey Program Advisory Committee, 2008-2009
Member, Research Funding Review Panel - Department of Radiation Physics - Research, 9/2007-present
Member, Research Mentorship Committe, 2007-present
Member, Continuous Medical Education Advisory Committee (CME), 2006-present
Member, Practitioner Peer Assistance Committee (PPAC), 2005-present

Honors and Awards

2010 Chairman's Award for Meritorius Services -- Award for outstanding contributions and service to the Department, the Division and the Institution., Department of Radiation Physics, The University of Texas MD Anderson Cancer Center
2010 Recipient of the 2010 Annual Meeting Basic Science Abstract Award for the abstract titled "Fast and Accurat Verification of Proton Range, Position and Intensity in IMPT with a 3 D Detector System." Archambault L, Poenisch F, Sahoo N, Lee A, Griffin MT, Mohan R, Beddar AS, The American Society of Radiation Oncology (ASTRO)
2010 The John R. Cunningham Young Investigators' Competition Symposium, Award for Best Young Investigator Abstract and Presentation. Won the 2nd Place Award. "A two dimensional plastic scintillation detector array for quality assurance of intensity modulated radiation therapy". Guillot M*, Gingras L, Archambault L, Beddar S, Beaulieu L. COMP/CCPM Annual Meeting, 2010, The Canadian Organization of Medical Physicists and The Canadian College of Physicists in Medicine
2009 Leadership Award for Special Contributions in Research, Department of Radiation Physics, The University of Texas MD Anderson Cancer Center
2009 Unfors Award of Excellence for the Best Radiation Measurement Article in the JACMP (Briere TM, Tailor RC, Tolani NB, Prado KL, Lane RG, Woo SY, Ha CS, Gillin MT, and Beddar AS. In vivo dosimetry using disposable MOSFET dosimeters for total body irradiation. J Appl Clin Med Phys 9:200-205, 2008), American College of Medical Physics
2008-present Fellow of the American Association of Physicists in Medicine, AAPM
2007 Jack Fowler Junior Investigator Competition Winner, Award for Best Junior Investigator Abstract, "Clinical prototype of a plastic water-equivalent scintillating fiber dosimeter matrix for IMRT QA applications", Lacroix F, Archambault L, Gingras L, Beddar AS, and Beaulieu L. Med Phys 34:2610, 2007, American Association of Physicists in Medicine
2006-2009 Odyssey Program and Houston Endowment, Inc. Award for Scientific Achievement, "Plastic scintillator dosimeter array for IMRT and IMPT", (Odyssey Fellow: Louis Archambault), The University of Texas MD Anderson Cancer Center
2003 Citation, "One of the Journals most frequently downloaded articles in 2003" (Beddar AS, Law S, Suchowerska N, and Mackie TR. Plastic scintillation dosimetry: optimization of light collection efficiency. Phys. Med. Biol. 48(9):1141-1152, 2003.) -- 446 downloads --, Physics in Medicine and Biology
1992-present Fellow of Canadian College of Physicists in Medicine, CCPM
1990 AAPM Summer School Scholarship, American Association of Physicists in Medicine
1984-1986 Post-Graduate Scholarship, Le Ministere de l'Enseignement Superieur et de la Recherché Scientifique (M.E.S.R.S.)
1981-1984 Graduate Scholarship, Le Ministere de l'Enseignement Superieur et de la Recherché Scientifique
1981 Valedictorian, Institut des Sciences Exactes, Université de Constantine, Algeria, Diploma of Higher Studies

Professional Memberships

American Association of Physicists in Medicine (AAPM)
Member, 1991-present
American College of Medical Physics (ACMP)
Full Member, 1998-present
American Society for Therapeutic Radiology and Oncology (ASTRO)
Associate Member, 2006-present
Canadian College of Physicists in Medicine (CCPM)
Full Member, 1990-present
Canadian Organization of Medical Physicists (COMP)
Full Member, 1990-present
European Society for Therapeutic Radiology and Oncology (ESTRO)
Full Member, 1995-present
International Society of IntraOperative Radiation Therapy (ISIORT)
Member, Quality Assurance Program for Clinical Trials, 2000-present

Selected Publications

Peer-Reviewed Original Research Articles
1. Chakravarty T, Crane CH, Ajani JA, Mansfield PF, Briere TM, Beddar S, Mok H, Krishnan S, Delclos ME, Das P. Intensity modulated radiation therapy with concurrent chemotherapy as preoperative treatment for localized gastric adenocarcinoma. Jour of Radia Oncol, Biol, Phys. In Press.
2. Wootton L, Polf JC, Peterson S, Wilkinson J, Rozner MA, Balter PA, Beddar S. Proton dose perturbations caused by high-voltage leads from implanted cardioverter defibrillators. J Appl Clin Med Phys. In Press.
3. Archambault L, Poenisch F, Sahoo N, Robertson D, Lee A, Gillin MT, Mohan R, Beddar S. Verification of proton range, position, and intensity in IMPT with a 3D liquid scintillator detector system. Med Phys 39(3):1239-1246, 3/2012.
4. Gagnon JC, Theriault D, Guillot M, Archambault L, Beddar S, Gingras L, Beaulieu L. Dosimetric performance and array assessment of plastic scintillation detectors for stereotactic radiosurgery quality assurance. Med Phys 39(1):429-436, 1/2012. PMID: 22225313.
5. Guillot M, Beaulieu L, Archambault L, Beddar S, Gingras L. A new water-equivalent 2D plastic scintillation detectors array for the dosimetry of megavoltage energy photon beams in radiation therapy. Med Phys 38(12):6763, 12/2011. PMID: 22149858.
6. Robertson D, Polf JC, Peterson SW, Gillin MT, Beddar S. Material efficiency studies for a Compton camera designed to measure characteristic prompt gamma rays emitted during proton beam radiotherapy. Phys Med Biol 56(10):3047-59, 5/21/2011. e-Pub 4/20/2011. PMCID: PMC3087185.
7. Therriault-Proulx F, Briere TM, Mourtada F, Aubin S, Beddar S, Beaulieu L. A phantom study of an in vivo dosimetry system using plastic scintillation detectors for real-time verification of 192Ir HDR brachytherapy. Med Phys 38(5):2542-51, 5/2011. PMCID: PMC3104721.
8. Tremblay NM, Hubert-Tremblay V, Bujold R, Beddar AS, Beaulieu L, Lepage M. Accurate calibration of a polymer gel dosimeter with a plastic scintillation detector. Med Phys 38(5):2754-2761, 5/2011. PMID: 21776812.
9. Guillot M, Gingras L, Archambault L, Beddar S, Beaulieu L. Spectral method for the correction of the Cerenkov light effect in plastic scintillation detectors: a comparison study of calibration procedures and validation in Cerenkov light-dominated situations. Med Phys 38(4):2140-50, 4/2011. PMCID: PMC3078161.
10. Therriault-Proulx F, Beddar S, Briere TM, Archambault L, Beaulieu L. Technical note: removing the stem effect when performing Ir-192 HDR brachytherapy in vivo dosimetry using plastic scintillation detectors: a relevant and necessary step. Med Phys 38(4):2176-9, 4/2011. PMID: 21626951.
11. Wang LL, Beddar S. Study of the response of plastic scintillation detectors in small-field 6 MV photon beams by Monte Carlo simulations. Med Phys 38(4):1596-1599, 3/2011. PMCID: PMC3064682.
12. Klein DM, Therriault-Proulx F, Archambault L, Briere TM, Beaulieu L, Beddar AS. Technical note: determining regions of interest for CCD camera-based fiber optic luminescence dosimetry by examining signal-to-noise ratio. Med Phys 38(3):1374-7, 3/2011. PMCID: PMC3055908.
13. Mok H, Briere TM, Martel MK, Beddar AS, Delclos ME, Krishnan S, Crane CH, Das P. Comparative analysis of volumetric modulated arc therapy (VMAT) versus intensity modulated radiation therapy (IMRT) for radiotherapy of anal carcinoma. Practical Radiation Oncology(1):163-172, 1/2011.
14. Mok H, Crane CH, Palmer MB, Briere TM, Beddar S, Delclos ME, Krishnan S, Das P. Intensity modulated radiation therapy (IMRT): differences in target volumes and improvement in clinically relevant doses to small bowel in rectal carcinoma. Radiat Oncol 6(63):63, 2011. e-Pub 6/8/2011. PMCID: PMC3121606.
15. Polf JC, Peterson S, Robertson D, Beddar S. Measuring prompt gamma ray emission during proton radiotherapy for assessment of treatment delivery and patient response. AIP Conference Proceedings 1336:364-368, 2011.
16. Klein DM, Tailor RC, Archambault L, Wang L, Therriault-Proulx F, Beddar AS. Measuring output factors of small fields formed by collimator jaws and multileaf collimators using plastic scintillation detectors. Med Phys 37(10):5541-5549, 10/2010. PMCID: PMC2962666.
17. Wang LL, Klein D, Beddar AS. Monte Carlo study of the energy and angular dependence of the response of plastic scintillation detectors in photon beams. Med Phys 37(10):5279-86, 10/2010. PMCID: PMC2951997.
18. Archambault L, Briere TM, Pönisch F, Beaulieu L, Kuban DA, Lee A, Beddar S. Toward a real-time in vivo dosimetry system using plastic scintillation detectors. Int J Radiat Oncol Biol Phys 78(1):280-7, 9/2010. e-Pub 3/2010. PMCID: PMC2889037.
19. Lacroix F, Guillot M, McEwen M, Cojocaru C, Gingras L, Beddar AS, Beaulieu L. Extraction of depth-dependent perturbation factors for parallel-plate chambers in elecron beams using plastic scintillation detector. Med Phys 37(8):4331-4342, 8/2010. PMCID: PMC2927689.
20. Lacroix F, Beaulieu L, Archambault L, Beddar AS. Simulation of the precision limits of plastic scintillation detectors using optimal component selection. Med Phys 37(2):412-418, 2/2010. PMCID: PMC2814832.
21. Lacroix F, Beddar AS, Guillot M, Beaulieu L and Gingras L. A design methodology using signal-to-noise ratio for plastic scintillation detectors design and performance optimization. Med Phys 36(11):5214-5220, 11/2009. PMCID: PMC2774352.
22. Polf JC, Peterson S, McCleskey M, Roeder BT, Spiridon A, Beddar AS, Trache L.. Measurement and calculation of characteristic prompt gamma ray spectra emitted during proton irradiation. Phys Med Biol 54(22):N519-N527, 11/2009. e-Pub 10/2009. PMID: 19864704.
23. Bouchard M, Amos RA, Briere TM, Beddar AS, and Crane CH. Dose escalation with proton or photon radiation treatment for pancreatic cancer. Radiother Oncol 2(2):238-243, 2009. PMID: 19454367.
24. Peterson SW, Polf J, Bues M, Ciangaru G, Archambault L, Beddar AS, Smith A. Experimental validation of a Monte Carlo proton therapy nozzle model incorporating magnetically steered protons. Phys Med Biol 54(10):3217-29, 2009. PMID: 19420426.
25. Beddar AS, Archambault L, Sahoo N, Poenisch F, Chen GT, Gillin MT, and Mohan R. Exploration of the potential of liquid scintillators for real-time 3D dosimetry of intensity modulated proton beams. Med Phys 36(5):1736-1743, 2009. PMID: 19544791.
26. Hodges JC, Das P, Eng C, Reish AG, Beddar AS, Delclos ME, Krishnan S, and Crane CH. Intensity-modulated radiation therapy for the treatment of squamous cell anal cancer with para-aortic nodal involvement. Int J Radiat Oncol Biol Phys 75(3):791-794, 2009. PMID: 19231109.
27. Pönisch F, Archambault L, Briere TM, Sahoo N, Mohan R, Beddar AS, and Gillin MT. Liquid scintillator for 2D dosimetry for high-energy photon beams. Med Phys 36(5):1478-1485, 2009. PMID: 19544763.
28. Polf JC, Peterson S, Ciangaru G, Gillin M and Beddar AS. Prompt gamma-ray emission from biological tissues during proton irradiation: A preliminary study. Phys Med Biol 54(3):731-743, 2009. PMID: 19131673.
29. Briere TM, Beddar AS, Balter P, Murthy R, Gupta S, Nelson C, Starkschall G, Gillin MT, and Krishnan S. Respiratory gating with EPID-based verification: The University of Texas MD Anderson Cancer Center experience. Phys Med Biol 54(11):3379-91, 2009. PMID: 19436104.
30. Beddar AS, Briere TM, Balter P, Pan T, Tolani N, Ng C, Szklaruk J, and Krishnan S. 4D-CT imaging with synchronized intravenous contrast injection to improve delineation of liver tumors for treatment planning. Radiother Oncol 87(3):445-448, 2008. PMID: 18194819.
31. Archambault L, Polf JC, Beaulieu L*, and Beddar AS* (*equal senior authors). Characterizing the response of miniature scintillation detectors when irradiated with proton beams. Phys Med Biol 53(7):1865-1876, 2008. PMID: 18364543.
32. Lacroix F, Archambault L, Gingras L, Guillot M, Beddar AS*, and Beaulieu L* (* equal senior authors). Clinical prototype of a plastic water-equivalent scintillating fiber dosimeter array for QA applications. Med Phys 35(8):3682-3690, 2008. PMID: 18777928.
33. Wang H, Krishnan S, Wang X, Beddar AS, Briere TM, Crane CH, Mohan R, Dong L. Improving soft-tissue contrast in four-dimensional computed tomography images of liver cancer patients using a deformable image registration method. Int J Radiat Oncol Biol Phys 72(1):201-9, 2008. PMID: 18722271.
34. Briere TM, Tailor R, Tolani N, Prado K, Lane R, Woo S, Ha C, Gillin MT, Beddar AS. Patient dosimetry for total body irradiation using single-use MOSFET detectors. J Appl Clin Med Phys 9(4):2787, 2008. PMID: 19020482.
35. Wang X, Krishnan S, Dong L, Briere TM, Crane CH, Gillin MT, Mohan R, and Beddar AS. Proton radiotherapy for liver tumors: Dosimetric advantages over photon plans. Med Dosim 33(4):259-267, 2008. PMID: 18973852.
36. Krishnan K, Dawson LA, Seong J, Akine Y, Beddar AS, Briere TM, Crane CH, and Mornex F. Radiotherapy for hepatocellular carcinoma: An overview. Ann Surg Oncol 15(4):1015-1024, 2008. PMID: 18236114.
37. Archambault L, Briere TM, and Beddar AS. Transient noise characterization and filtration in CCD cameras exposed to stray radiation from a medical linear accelerator. Med Phys 35(10):4342-4351, 2008. PMID: 18975680.
38. 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(2):630-638, 2007. PMID: 17236980.
39. Krishnan S, Briere TM, Dong L, Murthy R, Ng C, Balter P, Mohan R, Gillin MT, and Beddar AS. Daily targeting of liver tumors: Screening patients with a mock treatment and using a combination of internal and external fiducials for image-guided respiratory-gated radiotherapy. Med Phys 34(12):4591-4593, 2007. PMID: 18196785.
40. Vedam S, Archambault L, Starkschall G, Mohan R, and Beddar AS. 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(11):4247-4255, 2007. PMID: 18072489.
41. Gao S, Delclos ME, Tomas LC, Crane CH, and Beddar AS. High dose rate remote afterloaders for intraoperative radiation therapy. AORN J 86(5):827-836, 2007. PMID: 18050890.
42. Briere TM, Gillin MT, and Beddar AS. Implantable MOSFET detectors: Evaluation of a new design. Med Phys 34(12):4585-4590, 2007. PMID: 18196784.
43. Ballo MT, Zagars GK, Pollock RE, Benjamin RS, Feig BW, Cormier JN, Hunt KK, Patel SR, Trent JC, Beddar S, and Pisters PW. Retroperitoneal soft tissue sarcoma: An analysis of radiation and surgical treatment. Int J Radiat Oncol Biol Phys 67(1):158-163, 2007. PMID: 17084545.
44. Archambault L, Beddar AS, Gingras L, Roy R, and Beaulieu L. Water-equivalent dosimeter array for small field external beam radiotherapy. Med Phys 34(5):1583-1592, 2007. PMID: 17555240.
45. Krishnan S, Lin EH, Gunn GB, Chandra A, Beddar AS, Briere TM, Das P, Delclos ME, Janjan NA, and Crane CH. Conformal radiotherapy of the dominant liver metastasis: A viable strategy for treatment of unresectable chemotherapy refractory colorectal cancer liver metastases. Am J Clin Oncol 29(6):562-567, 2006. PMID: 17148992.
46. Beddar AS, Briere TM, and Ouzidane M. Intraoperative radiation therapy using a mobile electron linear accelerator: Field matching for large-field electron irradiation. Phys Med Biol 51(18):N331-337, 2006. PMID: 16953035.
47. 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. PMID: 16752582.
48. Archambault L, Beddar AS, Gingras L, Roy R, and Beaulieu L. Measurement accuracy and cerenkov removal for high performance, high spatial resolution scintillation dosimetry. Med Phys 33:128-135, 2006. PMID: 16485419.
49. Briere TM, Lii J, Prado K, Gilin MT, and Beddar AS. Single-use MOSFET radiation dosimeters for the quality assurance of megavoltage photon beams. Phys Med Biol 51(5):1139-1144, 2006. PMID: 16481683.
50. Ayotte G, Archambault L, Gingras L, Lacroix F, Beddar AS*, and Beaulieu L* (* equal senior authors). Surface preparation and coupling in plastic scintillator dosimetry. Med Phys 33(9):3519-3525, 2006. PMID: 17022248.
51. 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. PMID: 16376445.
52. Briere TM, Beddar AS, and Gillin MT. Evaluation of precalibrated implantable MOSFET radiation dosimeters for megavoltage photon beams. Med Phys 32:3346-3349, 2005. PMID: 16370421.
53. Beddar AS and Krishnan S. Intraoperative radiotherapy using a mobile electron LINAC: A retroperitoneal sarcoma case. J Appl Clin Med Phys 6:95-107, 2005. PMID: 16143794.
54. 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. PMID: 15984678.
55. Archambault L, Arsenault J, Gingras L, Beddar AS, Roy R, and Beaulieu L. Plastic scintillation dosimetry: optimal selection of scintillating fibers and scintillators. Med Phys 32:2271-2278, 2005. PMID: 16121582.
56. Beddar AS, Salehpour M, Briere TM, Hamidian H, and Gillin MT. Preliminary evaluation of implantable MOSFET radiation dosimeters. Phys Med Biol 50:141-149, 2005. PMID: 15715428.
57. Beddar AS. Stability of a mobile electron linear accelerator system for intraoperative radiation therapy. Med Phys 32:3128-3131, 2005. PMID: 16279065.
58. Zhang P, Beddar AS, and Sibata CH. AAPM TG-43 formalism for brachytherapy dose calculation of a 137Cs tube source. Med Phys 31:755-759, 2004. PMID: 15124992.
59. 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. PMID: 15152696.
60. Beddar AS, Suchowerska N, and Law SH. Plastic scintillation dosimetry for radiation therapy: Minimizing capture of Cerenkov radiation noise. Phys Med Biol 49:783-790, 2004. PMID: 15070202.
61. Ellis RJ, Vertocnik A, Kim E, Zhou H, Young B, Sodee B, Fu P, Beddar AS, Colussi V, Spirnak JP, Dinchman KH, Resnick M, and Kinsella TJ. Four-year biochemical outcome after radioimmunoguided transperineal brachytherapy for patients with prostate adenocarcinoma. Int J Radiat Oncol Biol Phys 57(2):362-370, 2003. PMID: 12957246.
62. Beddar AS, Law S, Suchowerska N, and Mackie TR. Plastic scintillation dosimetry: Optimization of light collection efficiency. Phys Med Biol 48:1141-52, 2003.
63. Crane CH, Beddar AS, Evans DB. The role of intraoperative radiotherapy in pancreatic cancer. Surg Oncol Clin N Am 12(4):965-77, 2003. PMID: 14989127.
64. Beddar AS, Kinsella TJ, Ikhlef A, and Sibata CH. A miniature scintillator-fiberoptic-PMT detector system for the dosimetry of small fields in stereotactic radiosurgery. IEEE Trans Nucl Sci 48:924-928, 2001.
65. Beddar AS, Kubo ML, Domanovic MA, Ellis RJ, Kinsella TJ, and Sibata CH. A new approach to intraoperative radiation therapy. AORN J 74(4):500-505, 2001. PMID: 11665383.
66. Colussi VC, Beddar AS, Kinsella TJ, Sibata CH. In vivo dosimetry using a single diode for megavoltage photon beam radiotherapy: implementation and response characterization. J Appl Clin Med Phys 2(4):210-8, 2001. PMID: 11686742.
67. Beddar AS, Domanovic MA, Kubo ML, Ellis RJ, Sibata CH, and Kinsella TJ. Mobile linear accelerators for intraoperative radiation therapy. AORN Journal 74(5):700-705, 2001. PMID: 11725448.
68. Ellis RJ, Kim EY, Conant R, Sodee DB, Spirnak JP, Dinchman KH, Beddar AS, Wessels B, Resnick MI, and Kinsella TJ. Radioimmunoguided imaging of prostate cancer foci with histopathological correlation. Int J Radiat Oncol Biol Phys 49(5):1281-1286, 2001. PMID: 11286835.
69. Ikhlef A, Skowronek M, and Beddar AS. X-ray imaging and detection using plastic scintillating fibers. Nuclear Instruments and Methods in Physics Research A 442:428-432, 2000.
70. Das IJ, Gazda MJ, and Beddar AS. Characteristics of a scintillator-based daily quality assurance device for radiation oncology beams. Med Phys 23(12):2061-2067, 1996. PMID: 8994171.
71. Beddar AS. A new scintillator detector system for the quality assurance of Co-60 and high-energy therapy machines. Phys Med Biol 39(2):253-263, 1994. PMID: 15552123.
72. Beddar AS, Mason DJ, O'Brien PF. Absorbed dose perturbation caused by diodes for small field photon dosimetry. Med Phys 21(7):1075-9, 1994. PMID: 7968839.
73. Beddar AS, Thomason C, and Leung PMK. Description and evaluation of a new 3D computerized treatment planning dose compensator system. Med Dosim 19(4):227-235, 1994. PMID: 7893357.
74. de Boer SF, Beddar AS, and Rawlinson JA. Optical filtering and spectral measurements of radiation-induced light in plastic scintillation dosimetry. Phys Med Biol 38:945-958, 1993.
75. 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.
76. Beddar AS, Mackie TR, Attix FH. Water-equivalent plastic scintillation detectors for high-energy beam dosimetry: I. Physical characteristics and theoretical consideration. Phys Med Biol 37(10):1883-900, 1992. PMID: 1438554.
77. Beddar AS, Mackie TR, Attix FH. Water-equivalent plastic scintillation detectors for high-energy beam dosimetry: II. Properties and measurements. Phys Med Biol 37(10):1901-13, 1992. PMID: 1438555.
78. Sibata CH, Mota HC, Beddar AS, Higgins PD, and Shin KH. Influence of detector size in photon beam profile measurements. Phys Med Biol 36(5):621-631, 1991. PMID: 2068227.
79. Beddar AS and Higgins PD. Use of ferroelectric crystal detectors for electron dosimetry. IEEE Trans Ultrason Ferroelectr Freq Control 37(1):26-30, 1990. PMID: 18285012.
80. Beddar AS and Higgins PD. Ionizing radiation response effects on optical fibers in radiation therapy dosimetry applications. SPIE 992:170-176, 1988.
81. Klein D, Briere TM, Kudchadker R, Archambault L, Beaulieu L, Lee A, Beddar S. In-phantom dose verification of prostate IMRT and VMAT deliveries using plastic scintillation detectors. Radiat Meas. Submitted.
82. Guillot M, Blachon G, Gingras L, Beddar AS*, and Beaulieu L* (* equal senior authors). Light yield efficiency of BCF-12 plastic scintillating fiber under keV irradiation. Med Phys. Submitted.
83. Wang L, Perles L, Archambault L, Sahoo N, Beddar S, Mirkovic D. Measurement of the quenching correction factors for a plastic scintillation detector in therapeutic high-energy proton beams. Med Phys. Submitted.

Invited Articles
1. Beddar AS. Plastic scintillation dosimetry and its application to radiotherapy. Radiat Meas 41:S124-S133, 2007.
2. Beddar AS. Water equivalent plastic scintillation detectors in radiation therapy. Radiat Prot Dosimetry 120:1-6, 2006. PMID: 16882685.
3. Law SH, Suchowerska N, Fleming SC, Beddar AS, and McKenzie D. Signal versus noise in fiber coupled radiation dosimeters for medical applications. Biomedical Optics, Proceedings of SPIE. Biomedical Optics, SPIE 5317:105-115, 2004.
4. Domanovik MA, Ouzidane M, Ellis RJ, Kinsella TJ, and Beddar AS. Using intraoperative radiation therapy - A case study. AORN J 77(2):412-417, 2003. PMID: 12619854.
5. Beddar AS. Radiation response of optical fibers to clinical radiotherapy photon and electron beams. Opto-Electronics: ESI publications; Paris, 146-149, 1988.
Other Articles
1. Beddar S. A liquid scintillator system for dosimetry of photon and proton beams. J. Phys. Conf. Ser. 250 (012038):1-3, 2010.
2. Guillot M, Gingras L, Archambault L, Beddar S, Beaulieu L. Toward 3D dosimetry of intensity modulated radiation therapy treatments with plastic scintillation detectors. J. Phys. Conf. Ser. 250 (012006):1-5, 2010.
3. Beddar AS, Archambault, L, Briere TM, Lacroix F, Gingras L, and Beaulieu L. Recent developments in scintillating fiber detection systems in radiation therapy. Proceedings of the SPIE 6913:69130R(1-9), 2008.
4. Law S and Beddar AS. Capture of Cerenkov radiation generated on the axis of an optical fibre when the fibre axis lies on the Cerenkov cone. Conference on the Optical Internet/Australian Conference on Optical Fibre Technology 2003, Melbourne, Australia. EA Books, 2003.
5. Kirov AS, Piao, Z, Devic, S, Shrinivas S, Beddar AS, Binns WR, Kinsella TJ, and Sibata CH. An estimate of the perturbing effect of Cerenkov radiation to the signal from a liquid scintillator volume irradiated by a megavoltage photon beam. Proceedings of the 22nd Annual EMBS International Conference, 2000, Chicago, IL,. IEEE 4:3148-3151, 2000.

Abstracts
1. Hynstrom JR, Tzeng CD, Beddar S, Delclos ME, Crane CH, Krishnan S, Das P, Skibber JM, Rodriguez-Bigas MA. Intraoperative radiation therapy for locally advanced primary and recurrent colorectal cancer: ten-year institutional experience. American College of Surgeons, Chicago, IL, 9/2012.
2. Therriault-Proulx, Archambault L, Beddar S, Beaulieu L. A revolutionary multi-point plastic scintillation detector for in-vivo dosimetry in HDR brachytheray. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
3. Morin J, Béliveau-Nadeau D, Chung E, Seuntjens J, Archambault L, Beddar S, Beaulieu L. A sub-millimeter plastic scintillation detector for small field measurements delivered by a CyberKnife unit. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
4. Bourgouin A, Bonde C, Adams E, Schmidt D, Beddar S, Beaulieu L, Archambault L. Characterization and validation of a commercial plastic scintillation detector prototype. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
5. Beddar S, Robertson D, Archambault L, Mohan R. Correction of optical artifacts in a liquid scintillator dosimetry system. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
6. Therriault-Proulx F, Archambault L, Beaulieu L, Beddar S. Development and application of a novel multi-point plastic scintillation detector for radiation therapy. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
7. Archambault L, Therriault-Proulx F, Beddar S, Beaulieu L. Formalism for hyper-spectral, multi-point, plastic scintillation detectors. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
8. Klein DM, Wootton LS, Kudchadker RJ, Lee AK, Beddar AS. In-phantom dose verification of four-field box and IMRT treatment delivery using plastic scintillation detectors. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
9. Lessard F, Therriault-Proulx F, Després P, Archambault L, Beddar S, Beaulieu L. Low energy photon dosimetry using plastic scintillation detectors. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
10. Robertson D, MIrkovic D, Beddar AS. Quenching correction for volumetric scintillation dosimetry of proton beams. ESTRO 31 Conference, Barcelona, Spain. Radiother Oncol, 5/2012.
11. Abboud M T, Crane C, Javie M, Kaseb A, Haque W, Delclos M, Krishnan S, Beddar S, Briere T, Das P. Risk factors for gastrointestinal bleeding in patients treated with radiation therapy for intrahepatic cholangiocarcinoma. ASTRO Annual Meeting, Miami Beach, FL, 10/2011.
12. Wang L, Perles L Archambault L, Sahoo N, Beddar, Mirkovic D. Application of a plastic scintillation detector in measuring depth-dose curves for passive-scattering proton beams. AAPM/COMP Meeting, Vancouver, BC, Med Phys 38(6):3366, 6/2011.
13. Mackin D, Polf J, Peterson S, Gillin M, Beddar S. Evaluating a stochastic reconstruction algorithm for compton camera based prompt gamma imaging during proton therapy. AAPM/COMP Meeting, Vancouver, BC, Med Phys 38(6):3567-3568, 6/2011.
14. Klein D, Wootton L, Tailor R, Beddar S. Investigating the effects of using several calibration conditions on the measurement accuracy of plastic scintillation detectors. AAPM/COMP Meeting, Vancouver, BC, Med Phys 38(6):3367, 6/2011.
15. Paganetti H, Jeraj R, Beddar S. Practical research advice: NIH navigation and grantsmanship. AAPM/COMP Meeting, Vancouver, BC, Med Phys 38(6):3738, 6/2011.
16. Peterson S, Polf J, Mackin D, Beddar S, Gillin M. Reconstructing images of prompt gammas emitted during proton radiotherapy. AAPM/COMP Meeting, Vancouver, BC, Med Phys 38(6):3853, 6/2011.
17. Robertson D, Mirkovic D, Mohan R, Beddar S. Voxelized quenching correction for proton pencil beams in a liquid scintillator detector. AAPM/COMP Meeting, Vancouver, BC, Med Phys 38(6):3816, 6/2011.
18. Mitchell MP, Abboud M, Crane CH, Eng GJ, Chang MA Rodriguez-Bigas JM, Skibber YN, You S, Beddar S, Krishnan ME, Delclos P, Das S. Intensity modulated radiation therapy (IMRT) with concurrent chemotherapy for anal cancer: A lage single institution experience. 2011 Gastrointestinal Cancers Symposium, 1/2011.
19. Archambault L, Poenisch F, Polf J, Robertson D, Sahoo N, Gillin MT, Mohan R, Beddar S. A 3D liquid scintillator detector system for intensity modulated proton therapy: online measurements of proton spots intensity. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3409, 6/2010.
20. Therriault-Proulx F, Beddar S, Briere TM, Beaulieu L. A necessary and efficient Cerenkov subtraction technique for in vivo scintillation dosimetry for HDR brachytherapy. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3346, 6/2010.
21. Guillot M, Gingras L, Archambault L, Beddar S, Beaulieu L. A two dimensional plastic scintillation detector array for quality assurance of intensity modulated radiation therapy. Proceeding of the 56th Annual Scientific Meeting, COMP/CCPM, Ottawa, ON, Canada:12, 6/2010.
22. Guillot M, Gingras L, Archambault L, Beddar S, Beaulieu L. A water equivalent and angular independent two-dimensional plastic scintillation detector array for quality assurance of IMRT treatments. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3329, 6/2010.
23. Wang L, Klein D, Beddar S. Directional dependence of the response of plastic scintillation detectors in photon beams. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3281, 6/2010.
24. Gagnon J, Theriault D, Guillot M, Archambault L, Beddar S, Gingras L, Beaulieu L. Dosimetric performance of the plastic scintillation detector for radiosurgery quality assurance. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3261, 6/2010.
25. Lacroix F, Guillot M, McEwen M, Cojocaru C, Gingras L, Beddar S, Beaulieu L. Extraction of perturbation factors for parallel-plate chambers in electron beams using a plastic scintillation detector. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3455, 6/2010.
26. Archambault L, Guillot M, Gingras L, Beaulieu L, Beddar S. Generalized formalism and optimization of the calibration sequence of plastic scintillation detectors. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3266, 6/2010.
27. Robertson D, Poenisch F, Archambault L, Sahoo N, Gillin M, Mohan R, Beddar S. Liquid scintillator dosimetry for passive scattering proton beam quality assurance. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3292, 6/2010.
28. Klein D, Tailor R, Archambault L, Wang L, Therriault-Proulx F, Beddar S. Measurement of small field output factors using plastic scintillation detectors. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3261, 6/2010.
29. Gagnon J, Theriault D, Guillot M, Archambault L, Beddar S, Gingras L, Beaulieu L. Plastic scintillation detector characterization for small fields and stereotactic radiosurgery quality assurance. Proceedings of the 56th Annual Scientific Meeting, COMP/OCPM, Ottawa, ON:30, 6/2010.
30. Melancon A, Lee A, Kudchadker R, Titt U, Beddar S, Zhu X, Dong L. Range adaptive proton therapy for prostate cancer. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3332, 6/2010.
31. Briere TM, Das P, Beddar S, Crane CH. Reproducibility of a vaginal dilator used for female anal cancer patients. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3167, 6/2010.
32. Briere TM, Das P, Beddar S, and Crane CH. Reproducibilty of a vaginal dilator used for female anal cancer patients. Imaging for Treatment Assessment in Radiation Therapy, National Harbor MD, 6/2010.
33. Beddar S. Beaulieu L and Archambault L. Scintillation dosimetry: from plastics to liquids and from photons/electrons to protons. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3333, 6/2010.
34. Wang L, Beddar S. Study of response of plastic scintillation detectors in small field 6 MV photon beams. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3283, 6/2010.
35. Li H, Delclos ME, Briere TM, Beddar S, Das P, Krishnan S, Zhu X, Crane C. The impact of free breathing versus average 4D CT image data on external beam radiotherapy planning for liver tumors. AAPM Annual Meeting, Philadelphia, Pennsylvania, Med Phys 37:3322, 6/2010.
36. Mok H, Briere TM, Martel MK, Beddar AS, Delclos ME, Krishnan S, Crane C, Das P. Comparative analysis of volumetric modulated arc therapy (VMAT) versus intensity modulated radiation therapy (IMRT) for radiotherapy of anal carcinoma. ASTRO 2010 Annual Meeting, Oct. 31 - Nov. 4, 2010, San Diego, California 78:S830, 2010.
37. Li H, Delclos ME, Briere TM, Beddar S, Das P, Krishnan S, Zhu XR, Crane C. Comparison of free breathing versus average 4D CT image data on external beam radiotherapy planning for liver tumors. ASTRO 2010 Annual Meeting, Oct. 31 - Nov. 4, 2010, San Diego, California 78:S325, 2010.
38. Archambault L, Poenisch F, Sahoo N, Lee A, Griffin MT, Mohan R, Beddar AS. Fast and accurate verification of proton range, position and intensity in IMPT with a 3D detector system. ASTRO 2010 Annual Meeting, Oct. 31 - Nov. 4, 2010, San Diego, California 78:S132, 2010.

Grant & Contract Support

Title: Performance evaluation of the Radiadyne OARTrac system - Phase II
Funding Source: Radiadyne
Role: Principal Investigator
Duration: 9/1/2011 - 9/1/2012
 
Title: Real-time in vivo dosimetry in radiation therapy using scintillation detectors. NCE
Funding Source: NIH/NCI
Role: Principal Investigator
Duration: 6/1/2011 - 5/31/2012
 
Title: Performance evaluation of the Radiadyne OARTrac system - Phase I
Funding Source: Radiadyne
Role: Principal Investigator
Duration: 6/1/2011 - 8/31/2011
 
Title: Water-Equivalent Plastic Scintillation Detectors for Small-Field Radiotherapy - SBIR Phase I
Funding Source: NIH/NCI
Role: Principal Investigator-MDACC
Duration: 9/1/2010 - 8/31/2011
 
Title: Real-time verification of proton dose delivery
Funding Source: NIH/NCI
Role: Co-Investigator
Principal Investigator: Jerimy Polf
Duration: 7/1/2010 - 6/30/2012
 
Title: Optimizing Proton Radiation Therapy
Funding Source: NIH/NCI
Role: Co-Investigator
Principal Investigator: Thomas DeLaney
Duration: 9/25/2008 - 7/31/2013
 
Title: Real-time in vivo Dosimetry in Radiation Therapy using Scintillation Detectors
Funding Source: NIH/NCI
Role: Principal Investigator
Duration: 7/1/2007 - 5/31/2011
 
Title: Scintillator detector system: real-time in vivo dosimetry in radiation therapy.
Funding Source: The University of Texas MD Anderson Cancer Center Technology Review Committee
Role: Principal Investigator
Duration: 3/5/2007 - 11/4/2007
 
Title: Performance of the new design of the implantable dosimeter Detectors (DVS).
Funding Source: Sicel Technologies
Role: Co-Principal Investigator
Principal Investigator: Briere
Duration: 10/15/2006 - 4/15/2007
 
Title: Dose-image guided radiotherapy for prostate cancer
Funding Source: NIH/NCI
Role: Mentor and Project Leader
Principal Investigator: Edward Jackson
Duration: 8/4/2006 - 7/31/2011
 
Title: Plastic scintillator dosimeter array for IMRT and IMPT
Funding Source: Odyssey Program and Houston Endowment, Inc.
Role: PI and Mentor
Duration: 2/1/2006 - 2/1/2009
 
Title: Un nouveau système dosimétrique à fibres optiques scintillantes pour application médicale.
Funding Source: National Sciences and Engineering Research Council of Canada (NSERC)
Role: Co-Investigator
Duration: 4/1/2005 - 3/31/2008
 
Title: Clinical Evaluation of the Sicel Implantable Detectors
Funding Source: Sicel Technologies
Role: Principal Investigator
Duration: 12/1/2003 - 12/30/2005
 
Title: Implantable Detectors
Funding Source: Sicel Technologies
Role: Principal Investigator
Duration: 3/21/2003 - 9/30/2003

Last updated: 3/12/2012