Larry DeWerd

Larry DeWerd

UNVERIFIED PROFILE

Are you Larry DeWerd?   Register this Author

Register author
Larry DeWerd

Larry DeWerd

Publications by authors named "Larry DeWerd"

Are you Larry DeWerd?   Register this Author

68Publications

1120Reads

5Profile Views

LET response variability of Gafchromic EBT3 film from a Co calibration in clinical proton beam qualities.

Med Phys 2019 Jun 23;46(6):2716-2728. Epub 2019 Mar 23.

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/mp.13442DOI Listing
June 2019

A convex windowless extrapolation chamber to measure surface dose rate from Ru/ Rh episcleral plaques.

Med Phys 2019 May 30;46(5):2430-2443. Epub 2019 Mar 30.

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/mp.13488DOI Listing
May 2019

VMAT and IMRT plan-specific correction factors for linac-based ionization chamber dosimetry.

Med Phys 2019 Feb 6;46(2):913-924. Epub 2018 Dec 6.

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1002/mp.13293
Publisher Site
http://dx.doi.org/10.1002/mp.13293DOI Listing
February 2019

Monte Carlo and Co-based kilovoltage x-ray dosimetry methods.

Med Phys 2018 Dec 31;45(12):5564-5576. Epub 2018 Oct 31.

Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1002/mp.13213
Publisher Site
http://dx.doi.org/10.1002/mp.13213DOI Listing
December 2018

Investigating a novel split-filter dual-energy CT technique for improving pancreas tumor visibility for radiation therapy.

J Appl Clin Med Phys 2018 Sep 17;19(5):676-683. Epub 2018 Aug 17.

Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, 53716, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/acm2.12435DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6123148PMC
September 2018

Characterization of spectral and intensity changes with measurement geometry in various light guides used in scintillation dosimetry.

Med Phys 2018 Jul 13;45(7):3417-3428. Epub 2018 Jun 13.

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1002/mp.12992
Publisher Site
http://dx.doi.org/10.1002/mp.12992DOI Listing
July 2018

Dosimetric characterization of a new directional low-dose rate brachytherapy source.

Med Phys 2018 May 24. Epub 2018 May 24.

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/mp.12994DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6548702PMC
May 2018

Experimental investigation of GafChromic EBT3 intrinsic energy dependence with kilovoltage x rays, Cs, and Co.

Med Phys 2018 Jan 22;45(1):448-459. Epub 2017 Dec 22.

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/mp.12682DOI Listing
January 2018

An analysis of the ArcCHECK-MR diode array's performance for ViewRay quality assurance.

J Appl Clin Med Phys 2017 Jul 6;18(4):161-171. Epub 2017 Jun 6.

School of Medicine and Public Health, Department of Human Oncology, University of Wisconsin-Madison, Madison, WI, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/acm2.12107DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5874930PMC
July 2017

Reply to: Comment on: polarity effects and apparent ion recombination in microionization chambers [Med. Phys. 43(5) 2141-2152 (2016)].

Med Phys 2017 Mar 10;44(3):1206-1207. Epub 2017 Feb 10.

Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/mp.12084DOI Listing
March 2017

Ion recombination and polarity corrections for small-volume ionization chambers in high-dose-rate, flattening-filter-free pulsed photon beams.

Med Phys 2017 Feb 2;44(2):618-627. Epub 2017 Feb 2.

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1002/mp.12053DOI Listing
February 2017

Air-kerma strength determination of an HDR Ir source including a geometric sensitivity study of the seven-distance method.

Med Phys 2017 Jan;44(1):311-320

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1002/mp.12017
Publisher Site
http://dx.doi.org/10.1002/mp.12017DOI Listing
January 2017

Development and characterization of an interferometer for calorimeter-based absorbed dose to water measurements in a medical linear accelerator.

Rev Sci Instrum 2016 Nov;87(11):114301

Department of Medical Physics, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1063/1.4967490DOI Listing
November 2016

Polarity effects and apparent ion recombination in microionization chambers.

Med Phys 2016 May;43(5):2141

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53705.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4944872DOI Listing
May 2016

Radiation Biology Irradiator Dose Verification Survey.

Radiat Res 2016 Feb 15;185(2):163-8. Epub 2016 Jan 15.

Department of Medical Physics, University of Wisconsin - Madison, School of Medicine and Public Health, Madison, Wisconsin.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1667/RR14155.1DOI Listing
February 2016

Absolute measurement of LDR brachytherapy source emitted power: Instrument design and initial measurements.

Med Phys 2016 Feb;43(2):796-806

Department of Medical Physics, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin 53705.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4939666DOI Listing
February 2016

A modified dose calculation formalism for electronic brachytherapy sources.

Brachytherapy 2015 May-Jun;14(3):405-8. Epub 2015 Mar 10.

Medical Radiation Research Center, University of Wisconsin, Madison, WI.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.brachy.2015.01.003DOI Listing
December 2015

Air-kerma strength determination of a new directional (103)Pd source.

Med Phys 2015 Dec;42(12):7144-52

Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin 53705.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4935409DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5148138PMC
December 2015

Experimental and Monte Carlo dosimetric characterization of a 1 cm (103)Pd brachytherapy source.

Brachytherapy 2014 Nov-Dec;13(6):657-67. Epub 2014 May 28.

Department of Medical Physics, University of Wisconsin-Madison, UW Medical Radiation Research Center, Madison, WI.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.brachy.2014.04.001DOI Listing
May 2015

Impact of the differential fluence distribution of brachytherapy sources on the spectroscopic dose-rate constant.

Med Phys 2015 May;42(5):2379-88

Department of Medical Physics, University of Wisconsin - Madison, Madison, Wisconsin 53705.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4918325DOI Listing
May 2015

Development of a phantom to validate high-dose-rate brachytherapy treatment planning systems with heterogeneous algorithms.

Med Phys 2015 Apr;42(4):1566-74

Instituto de Pesquisas Energéticas e Nucleares-IPEN-CNEN/SP, São Paulo 05508-000, Brazil.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4914390DOI Listing
April 2015

Development and characterization of a three-dimensional radiochromic film stack dosimeter for megavoltage photon beam dosimetry.

Med Phys 2014 May;41(5):052104

Department of Medical Physics, University of Wisconsin, Madison, Wisconsin 53705.

View Article

Download full-text PDF

Source
http://doi.wiley.com/10.1118/1.4871781
Publisher Site
http://dx.doi.org/10.1118/1.4871781DOI Listing
May 2014

Dosimetric characterization and output verification for conical brachytherapy surface applicators. Part I. Electronic brachytherapy source.

Med Phys 2014 Feb;41(2):022103

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53705.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4862505DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3987645PMC
February 2014

Dosimetric characterization and output verification for conical brachytherapy surface applicators. Part II. High dose rate 192Ir sources.

Med Phys 2014 Feb;41(2):022104

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53705.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4862506DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3987768PMC
February 2014

103Pd strings: Monte Carlo assessment of a new approach to brachytherapy source design.

Med Phys 2014 Jan;41(1):011716

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53705.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4856015DOI Listing
January 2014

Response of TLD-100 in mixed fields of photons and electrons.

Med Phys 2013 Jan;40(1):012103

Department of Medical Physics, University of Wisconsin, Madison, WI 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4773030DOI Listing
January 2013

Technical note: improved implementation of Doppler broadening in MCNP5.

Med Phys 2012 Sep;39(9):5635-8

University of Wisconsin-Madison, Department of Medical Physics, Madison, WI, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.4747527DOI Listing
September 2012

Determining the effects of microsphere and surrounding material composition on (90)Y dose kernels using egsnrc and mcnp5.

Med Phys 2012 Mar;39(3):1424-34

Department of Medical Physics, University of Wisconsin-Madison, Madison, WI 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.3685577DOI Listing
March 2012

Comparison of air-kerma strength determinations for HDR (192)Ir sources.

Med Phys 2011 Dec;38(12):6721-9

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.3656683DOI Listing
December 2011

Characterizing the marker-dye correction for Gafchromic(®) EBT2 film: a comparison of three analysis methods.

Med Phys 2011 Oct;38(10):5771-7

Department of Medical Physics, University of Wisconsin, Madison, WI 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.3639997DOI Listing
October 2011

A dosimetric uncertainty analysis for photon-emitting brachytherapy sources: report of AAPM Task Group No. 138 and GEC-ESTRO.

Med Phys 2011 Feb;38(2):782-801

Department of Medical Physics and Accredited Dosimetry Calibration Laboratory, University of Wisconsin, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3033879PMC
http://dx.doi.org/10.1118/1.3533720DOI Listing
February 2011

Investigation of a 90Sr/90Y source for intra-ocular treatment of wet age-related macular degeneration.

Med Phys 2009 Oct;36(10):4370-8

University of Wisconsin Medical Radiation Research Center, Madison, Wisconsin 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.3213515DOI Listing
October 2009

Ophthalmic applicators: an overview of calibrations following the change to SI units.

Med Phys 2009 May;36(5):1473-7

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.3098943DOI Listing
May 2009

Air kerma based dosimetry calibration for the Leksell Gamma Knife.

Med Phys 2009 Feb;36(2):339-50

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.3049587DOI Listing
February 2009

Spectroscopic output of 125I and 103Pd low dose rate brachytherapy sources.

Med Phys 2009 Jan;36(1):270-8

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53705, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.3039789DOI Listing
January 2009

Response of an implantable MOSFET dosimeter to 192Ir HDR radiation.

Med Phys 2008 Dec;35(12):5729-37

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.3013574DOI Listing
December 2008

Primary calibration of coiled 103Pd brachytherapy sources.

Med Phys 2008 Jan;35(1):32-8

University of Wisconsin-Madison, Department of Medical Physics, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.2815628DOI Listing
January 2008

Supplement to the 2004 update of the AAPM Task Group No. 43 Report.

Med Phys 2007 Jun;34(6):2187-205

Department of Radiation Oncology, Tufts University School of Medicine, Boston, Massachusetts 02111, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.2736790DOI Listing
June 2007

Monte Carlo aided design of an improved well-type ionization chamber for low energy brachytherapy sources.

Med Phys 2007 Apr;34(4):1274-85

Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.2712416DOI Listing
April 2007

Global quality control perspective for the physical and technical aspects of screen-film mammography--image quality and radiation dose.

Radiat Prot Dosimetry 2006 18;121(4):445-51. Epub 2006 May 18.

Department of Radiology, University of Malaya, 50603 Kuala Lumpur, Malaysia.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1093/rpd/ncl051DOI Listing
March 2007

Characterization of the ADII-33 diamond detector.

Med Phys 2007 Jan;34(1):215-20

Department of Medical Physics, University of Wisconsin, Madison, 1530 MSC, 1300 University Avenue, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.2400832DOI Listing
January 2007

Calculated and measured brachytherapy dosimetry parameters in water for the Xoft Axxent X-Ray Source: an electronic brachytherapy source.

Med Phys 2006 Nov;33(11):4020-32

Department of Radiation Oncology, Tufts-New England Medical Center, Boston, Massachusetts 02111, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.2357021DOI Listing
November 2006

Calibration of multiple LDR brachytherapy sources.

Med Phys 2006 Oct;33(10):3804-13

Department of Medical Physics, University of Wisconsin, Madison, Wisconsin 55106, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.2348765DOI Listing
October 2006

Experimental determination of the radial dose function of 90Sr/90Y IVBT sources.

Med Phys 2006 Sep;33(9):3225-33

University of Wisconsin-Madison, Department of Medical Physics, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.2256068DOI Listing
September 2006

Calibration of the photon component of 198Au stents.

Brachytherapy 2005 ;4(1):51-8

Department of Medical Physics, University of Wisconsin-Madison, Madison, WI 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.brachy.2004.11.004DOI Listing
November 2005

John R. Cameron.

Med Phys 2005 Jun;32(6Part1):1818-1819

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.1928283DOI Listing
June 2005

Comparison of dosimetric standards of USA and France for HDR brachytherapy.

Phys Med Biol 2005 May 13;50(9):1961-78. Epub 2005 Apr 13.

Laboratoire National Henri Becquerel-BNM, CEA Saclay 91191 Gif-sur-Yvette, France.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1088/0031-9155/50/9/003DOI Listing
May 2005

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.

Med Phys 2005 May;32(5):1424-39

Photon-Emitting Brachytherapy Dosimetry Subcommittee of the Radiation Therapy Committee, Department of Radiation Oncology, Virginia Commonwealth University, Richmond, Virginia 23298, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.1884925DOI Listing
May 2005

The effect of ambient pressure on well chamber response: Monte Carlo calculated results for the HDR 1000 plus.

Med Phys 2005 Apr;32(4):1103-14

University of Wisconsin-Madison, Department of Medical Physics, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.1884905DOI Listing
April 2005

Update of AAPM Task Group No. 43 Report: A revised AAPM protocol for brachytherapy dose calculations.

Med Phys 2004 Mar;31(3):633-74

Department of Radiation Oncology, Tufts-New England Medical Center, Boston, Massachusetts 02111, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.1646040DOI Listing
March 2004

Brachytherapy dosimetry of 125I and 103Pd sources using an updated cross section library for the MCNP Monte Carlo transport code.

Med Phys 2003 Apr;30(4):701-11

University of Wisconsin-Madison, Department of Medical Physics, Madison, Wisconsin 53706, USA.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1118/1.1562942DOI Listing
April 2003