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Larry DeWerd

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TOP 3
J R Snow; John A Micka; Larry A DeWerd
Microionization chamber air-kerma calibration coefficients as a function of photon energy for x-ray spectra in the range of 20-250 kVp relative to 60Co.
Michael J Lawless; Cliff Hammer; Stephanie Junell; Larry A DeWerd
Response of TLD-100 in mixed fields of photons and electrons.
Laura J Bartol; Larry A DeWerd
Technical note: improved implementation of Doppler broadening in MCNP5.

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All Publications

2013: J R Snow; John A Micka; Larry A DeWerd
Microionization chamber air-kerma calibration coefficients as a function of photon energy for x-ray spectra in the range of 20-250 kVp relative to 60Co.
Medical physics 2013;40(4):041711.
2013: Michael J Lawless; Cliff Hammer; Stephanie Junell; Larry A DeWerd
Response of TLD-100 in mixed fields of photons and electrons.
Medical physics 2013;40(1):012103.
2012: Laura J Bartol; Larry A DeWerd
Technical note: improved implementation of Doppler broadening in MCNP5.
Medical physics 2012;39(9):5635-8.
2012: Jose Perez-Calatayud; Mark J Rivard; Ron S Sloboda; Facundo Ballester; Rupak K Das; Larry A DeWerd; Geoffrey S Ibbott; Ali S Meigooni; Zoubir Ouhib; Jeffrey F Williamson
Dose calculation for photon-emitting brachytherapy sources with average energy higher than 50 keV: report of the AAPM and ESTRO.
Medical physics 2012;39(5):2904-29.
2012: Adam B Paxton; Stephen D Davis; Larry A DeWerd
Determining the effects of microsphere and surrounding material composition on (90)Y dose kernels using egsnrc and mcnp5.
Medical physics 2012;39(3):1424-34.
2011: Travis J McCaw; John A Micka; Larry A DeWerd
Characterizing the marker-dye correction for Gafchromic(®) EBT2 film: a comparison of three analysis methods.
Medical physics 2011;38(10):5771-7.
2011: William A Dezarn; Wenzheng Feng; Vanessa L Gates; James Halama; Andrew S Kennedy; Subir Nag; Riad Salem; Mehrdad Sarfaraz; Varun Sehgal; Reed Selwyn; Michael G Stabin; Bruce R Thomadsen; Lawrence E Williams; Jeffery T Cessna; Larry A DeWerd
Recommendations of the American Association of Physicists in Medicine on dosimetry, imaging, and quality assurance procedures for 90Y microsphere brachytherapy in the treatment of hepatic malignancies.
Medical physics 2011;38(8):4824-45.
2011: Larry A DeWerd; Geoffrey S Ibbott; Ali S Meigooni; Michael G Mitch; Mark J Rivard; Kurt E Stump; Bruce Thomadsen; Jack L M Venselaar
A dosimetric uncertainty analysis for photon-emitting brachytherapy sources: report of AAPM Task Group No. 138 and GEC-ESTRO.
Medical physics 2011;38(2):782-801.
2010: Julie A Raffi; Stephen D Davis; Cliff G Hammer; John A Micka; Keith A Kunugi; Jana E Musgrove; John W Winston; Terresa J Ricci-Ott; Larry A DeWerd
Determination of exit skin dose for 192Ir intracavitary accelerated partial breast irradiation with thermoluminescent dosimeters.
Medical physics 2010;37(6):2693-702.
2010: R M Kennedy; S D Davis; John A Micka; Larry A DeWerd
Experimental and Monte Carlo determination of the TG-43 dosimetric parameters for the model 9011 THINSeed brachytherapy source.
Medical physics 2010;37(4):1681-8.
2009: Shannon M Holmes; John A Micka; Larry A DeWerd
Investigation of a 90Sr/90Y source for intra-ocular treatment of wet age-related macular degeneration.
Medical physics 2009;36(10):4370-8.
2009: Shannon M Holmes; John A Micka; Larry A DeWerd
Ophthalmic applicators: an overview of calibrations following the change to SI units.
Medical physics 2009;36(5):1473-7.
2009: Sheridan Griffin Meltsner; Larry A DeWerd
Air kerma based dosimetry calibration for the Leksell Gamma Knife.
Medical physics 2009;36(2):339-50.
2009: Jacqueline Usher-Moga; Stephen M Beach; Larry A DeWerd
Spectroscopic output of 125I and 103Pd low dose rate brachytherapy sources.
Medical physics 2009;36(1):270-8.
2008: Jessica M Fagerstrom; John A Micka; Larry A DeWerd
Response of an implantable MOSFET dosimeter to 192Ir HDR radiation.
Medical physics 2008;35(12):5729-37.
2008: J J VanDamme; W S Culberson; Larry A DeWerd; John A Micka
Air-kerma strength determination of a 169Yb high dose rate brachytherapy source.
Medical physics 2008;35(9):3935-42.
2008: Wayne M Butler; William S Bice; Larry A DeWerd; James M Hevezi; M. Saiful Huq; Geoffrey S Ibbott; Jatinder R Palta; Mark J Rivard; Jan P Seuntjens; Bruce R Thomadsen
Third-party brachytherapy source calibrations and physicist responsibilities: report of the AAPM Low Energy Brachytherapy Source Calibration Working Group.
Medical physics 2008;35(9):3860-5.
2008: A A Nunn; S D Davis; John A Micka; Larry A DeWerd
LiF:Mg,Ti TLD response as a function of photon energy for moderately filtered x-ray spectra in the range of 20-250 kVp relative to 60Co.
Medical physics 2008;35(5):1859-69.
2008: R Selwyn; John A Micka; Larry A DeWerd; R Nickles; Bruce Thomadsen
Technical note: the calibration of 90Y-labeled SIR-Spheres using a nondestructive spectroscopic assay.
Medical physics 2008;35(4):1278-9.
2008: Adam B Paxton; Wesley S Culberson; Larry A DeWerd; John A Micka
Primary calibration of coiled 103Pd brachytherapy sources.
Medical physics 2008;35(1):32-8.
2007: Mark J Rivard; Wayne M Butler; Larry A DeWerd; M. Saiful Huq; Geoffrey S Ibbott; Ali S Meigooni; Christopher S Melhus; Michael G Mitch; Ravinder Nath; Jeffrey F Williamson
Supplement to the 2004 update of the AAPM Task Group No. 43 Report.
Medical physics 2007;34(6):2187-205.
2007: Tim D Bohm; John A Micka; Larry A DeWerd
Monte Carlo aided design of an improved well-type ionization chamber for low energy brachytherapy sources.
Medical physics 2007;34(4):1274-85.
2007: Reed G Selwyn; Robert J Nickles; Bruce Thomadsen; Larry A DeWerd; John A Micka
A new internal pair production branching ratio of 90Y: the development of a non-destructive assay for 90Y and 90Sr.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2007;65(3):318-27.
2007: Manuel Rodriguez; Sheridan Griffin; Larry A DeWerd; Robert Jeraj
Characterization of the ADII-33 diamond detector.
Medical physics 2007;34(1):215-20.
2007: Zuofeng Li; Rupak K Das; Larry A DeWerd; Geoffrey S Ibbott; Ali S Meigooni; José Pérez-Calatayud; Mark J Rivard; Ron S Sloboda; Jeffrey F Williamson
Dosimetric prerequisites for routine clinical use of photon emitting brachytherapy sources with average energy higher than 50 kev.
Medical physics 2007;34(1):37-40.
2006: Mark J Rivard; Stephen D Davis; Larry A DeWerd; Thomas W Rusch; Steve Axelrod
Calculated and measured brachytherapy dosimetry parameters in water for the Xoft Axxent X-Ray Source: an electronic brachytherapy source.
Medical physics 2006;33(11):4020-32.
2006: Larry A DeWerd; John A Micka; Shannon M Holmes; Tim D Bohm
Calibration of multiple LDR brachytherapy sources.
Medical physics 2006;33(10):3804-13.
2006: Shannon M Holmes; Larry A DeWerd; John A Micka
Experimental determination of the radial dose function of 90Sr/90Y IVBT sources.
Medical physics 2006;33(9):3225-33.
2006: R Minniti; H Chen-Mayer; Stephen M Seltzer; M. Saiful Huq; L Bryson; Thomas W Slowey; John A Micka; Larry A DeWerd; Nathan Wells; William F Hanson; Geoffrey S Ibbott
The US radiation dosimetry standards for 60Co therapy level beams, and the transfer to the AAPM accredited dosimetry calibration laboratories.
Medical physics 2006;33(4):1074-7.
2006: kh ng; Noriah Jamal; Larry A DeWerd
Global quality control perspective for the physical and technical aspects of screen-film mammography--image quality and radiation dose.
Radiation protection dosimetry 2006;121(4):445-51.
2006: Wayne M Butler; M. Saiful Huq; Zuofeng Li; Bruce Thomadsen; Larry A DeWerd; Geoffrey S Ibbott; Michael G Mitch; Ravinder Nath; Mark J Rivard; Jeffrey F Williamson; Ning J Yue; Marco Zaider
Third party brachytherapy seed calibrations and physicist responsibilities.
Medical physics 2006;33(1):247-8.
2005: Guilhem Douysset; Jean Gouriou; Frank Delaunay; Larry A DeWerd; Kurt Stump; John Micka
Comparison of dosimetric standards of USA and France for HDR brachytherapy.
Physics in medicine and biology 2005;50(9):1961-78.
2005: Jeffrey F Williamson; Wayne Butler; Larry A DeWerd; M. Saiful Huq; Geoffrey S Ibbott; Michael G Mitch; Ravinder Nath; Mark J Rivard; Dorin Todor
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.
Medical physics 2005;32(5):1424-39.
2005: Tim D Bohm; Sheridan L Griffin; Paul M DeLuca; Larry A DeWerd
The effect of ambient pressure on well chamber response: Monte Carlo calculated results for the HDR 1000 plus.
Medical physics 2005;32(4):1103-14.
2005: E Y Hirata; C Cunningham; John A Micka; H Keller; Michael W Kissick; Larry A DeWerd
Low dose fraction behavior of high sensitivity radiochromic film.
Medical physics 2005;32(4):1054-60.
2005: S L Griffin; Larry A DeWerd; John A Micka; Tim D Bohm
The effect of ambient pressure on well chamber response: experimental results with empirical correction factors.
Medical physics 2005;32(3):700-9.
2005: Wesley S Culberson; Larry A DeWerd; Bruce Thomadsen; John A Micka; Tim D Bohm
Calibration of the photon component of 198Au stents.
Brachytherapy 2005;4(1):51-8.
2004: P Rassiah; kh ng; Larry A DeWerd; K Kunugi
A thermoluminescent dosimetry postal dose inter-comparison of radiation therapy centres in Malaysia.
Australasian physical & engineering sciences in medicine / supported by the Australasian College of Physical Scientists in Medicine and the Australasian Association of Physical Sciences in Medicine 2004;27(1):25-9.
2004: Larry A DeWerd; M. Saiful Huq; Indra J Das; Geoffrey S Ibbott; William F Hanson; Thomas W Slowey; Jeffrey F Williamson; Bert M Coursey
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.
Medical physics 2004;31(3):675-81.
2004: Mark J Rivard; Bert M Coursey; Larry A DeWerd; William F Hanson; M. Saiful Huq; Geoffrey S Ibbott; Michael G Mitch; Ravinder Nath; Jeffrey F Williamson
Update of AAPM Task Group No. 43 Report: A revised AAPM protocol for brachytherapy dose calculations.
Medical physics 2004;31(3):633-74.
2003: Larry A DeWerd; Rock Mackie
Comment on "Comparison of ionization chambers of various volumes for IMRT absolute dose verification".
Medical physics 2003;30(8):2264.
2003: Tim D Bohm; Paul M DeLuca; Larry A DeWerd
Brachytherapy dosimetry of 125I and 103Pd sources using an updated cross section library for the MCNP Monte Carlo transport code.
Medical physics 2003;30(4):701-11.
2002: Larry A DeWerd; John A Micka; R W Laird; DW Pearson; M O'Brien; P Lamperti
The effect of spectra on calibration and measurement with mammographic ionization chambers.
Medical physics 2002;29(11):2649-54.
2002: Pedro Andreo; M. Saiful Huq; Mathias Westermark; Haijun Song; Aris Tilikidis; Larry A DeWerd; Ken shortt
Protocols for the dosimetry of high-energy photon and electron beams: a comparison of the IAEA TRS-398 and previous international codes of practice. International Atomic Energy Agency.
Physics in medicine and biology 2002;47(17):3033-53.
2002: K E Stump; Larry A DeWerd; John A Micka; D R Anderson
Calibration of new high dose rate 192Ir sources.
Medical physics 2002;29(7):1483-8.
2001: José Pérez-Calatayud; Facundo Ballester; Y Limami; Larry A DeWerd; K Nelson
Assessment of the linear reference air kerma rate of 192Ir wires.
Physics in medicine and biology 2001;46(8):2201-7.
2001: C-M Charlie Ma; C W Coffey; Larry A DeWerd; C Liu; R Nath; Stephen M Seltzer; JP Seuntjens
AAPM protocol for 40-300 kV x-ray beam dosimetry in radiotherapy and radiobiology.
Medical physics 2001;28(6):868-93.
2001: L A Buckley; Bruce Thomadsen; Larry A DeWerd
The water-equivalence of phantom materials for 90Sr-90Y beta particles.
Medical physics 2001;28(6):1010-5.
2000: kh ng; Larry A DeWerd; R C Schmidt
Mammographic image quality and exposure in South East Asia.
Australasian physical & engineering sciences in medicine / supported by the Australasian College of Physical Scientists in Medicine and the Australasian Association of Physical Sciences in Medicine 2000;23(4):135-7.
2000: Jeffrey F Williamson; Bert M Coursey; Larry A DeWerd; William F Hanson; Ravinder Nath; Mark J Rivard; Geoffrey S Ibbott
Recommendations of the American Association of Physicists in Medicine on 103Pd interstitial source calibration and dosimetry: implications for dose specification and prescription.
Medical physics 2000;27(4):634-42.
1999: Jeffrey F Williamson; Bert M Coursey; Larry A DeWerd; William F Hanson; Ravinder Nath; Mark J Rivard; Geoffrey S Ibbott
On the use of apparent activity (Aapp) 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.
Medical physics 1999;26(12):2529-30.
1999: Bruce Thomadsen; Larry A DeWerd; TODD MCNUTT; S DeWerd; D Schmidt
Assessment of the strength of individual 192Ir seeds in ribbons.
Medical physics 1999;26(11):2471-5.
1999: R J Aus; Larry A DeWerd; DW Pearson; John A Micka; kh ng
Dependence of scatter on atomic number for x rays from tungsten and molybdenum anodes in the mammographic energy range.
Medical physics 1999;26(7):1306-11.
1999: Jeffrey F Williamson; Bert M Coursey; Larry A DeWerd; William F Hanson; Ravinder Nath; Geoffrey S Ibbott
Guidance to users of Nycomed Amersham and North American Scientific, Inc., I-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.
Medical physics 1999;26(4):570-3.
1999: Larry A DeWerd; L K Wagner
Characteristics of radiation detectors for diagnostic radiology.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 1999;50(1):125-36.
1998: J Williamson; Bert M Coursey; Larry A DeWerd; William F Hanson; Ravinder Nath
Dosimetric prerequisites for routine clinical use of new low energy photon interstitial brachytherapy sources. Recommendations of the American Association of Physicists in Medicine Radiation Therapy Committee. Ad Hoc Subcommittee of the Radiation Therapy Committee.
Medical physics 1998;25(12):2269-70.
1997: kh ng; R J Aus; Larry A DeWerd; J R Vetter
Entrance skin exposure and mean glandular dose: effect of scatter and field gradient at mammography.
Radiology 1997;205(2):395-8.
1997: J G Coletti; DW Pearson; Larry A DeWerd; C M O'Brien; P J Lamperti
Comparison of exposure standards in the mammography x-ray region.
Medical physics 1997;24(8):1263-7.
1996: J R Gentry; Larry A DeWerd
TLD measurements of in vivo mammographic exposures and the calculated mean glandular dose across the United States.
Medical physics 1996;23(6):899-903.
1995: Larry A DeWerd; P Jursinic; R Kitchen; Bruce Thomadsen
Quality assurance tool for high dose rate brachytherapy.
Medical physics 1995;22(4):435-40.
1995: Matthew B Podgorsak; Larry A DeWerd; Bhudatt Paliwal; A K Ho; C H Sibata
Accuracy of the point source approximation to high dose-rate Ir-192 sources.
Medical dosimetry : official journal of the American Association of Medical Dosimetrists 1995;20(3):177-81.
1994: C S Reft; F T Kuchnir; Larry A DeWerd; J Micka; F H Attix
A comparison of methods for calibrating parallel-plate chambers/.
Medical physics 1994;21(12):1953-7.
1993: Matthew B Podgorsak; Larry A DeWerd; Bhudatt Paliwal
The half-life of high dose rate Ir-192 sources.
Medical physics 1993;20(4):1257-9.
1993: E J Fairbanks; Larry A DeWerd
Thermoluminescent characteristics of LiF:Mg,Ti from three manufacturers.
Medical physics 1993;20(3):729-31.
1992: Matthew B Podgorsak; Larry A DeWerd; Bruce Thomadsen; Bhudatt Paliwal
Thermal and scatter effects on the radiation sensitivity of well chambers used for high dose rate Ir-192 calibrations.
Medical physics 1992;19(5):1311-4.
1992: S J Goetsch; F H Attix; Larry A DeWerd; Bruce Thomadsen
A new re-entrant ionization chamber for the calibration of iridium-192 high dose rate sources.
International journal of radiation oncology, biology, physics 1992;24(1):167-70.
1990: Larry A DeWerd; J Price; J R Cameron; S J Goetsch
Evaluation of a commercial diode monitor for mailed quality control of therapy units.
International journal of radiation oncology, biology, physics 1990;19(4):1053-7.
1990: Larry A DeWerd
Monitoring mammographic performance.
Administrative radiology : AR 1990;9(9):43-4, 47-8.
1989: Larry A DeWerd; M C Light; M M Liss; C F Mesina
Radiation therapy and clinical physics practices in the midwest (1982-1986).
Medical physics 1989;16(4):648-52.
1988: F N Ranallo; S J Goetsch; Larry A DeWerd; M M Liss; C Borras; C White; J Barton; T Mian; S Malik; M Wolff
Calibration and use of the Wisconsin kVp test cassette.
Medical physics 1988;15(5):768-72.