Larry DeWerd, Ph.D.

Professor (CHS)
Director, University of Wisconsin Accredited Dosimetry Laboratory

Department Affiliations
Medical Physics

Education

B.S., Math & PHYSICS, University of Wisconsin-Milwaukee, 1963

M.S., PHYSICS, University of Wisconsin-Madison, 1965

Ph.D., PHYSICS/MEDICAL PHYSICS, University of Wisconsin-Madison, 1970

Research Interest

Radiation metrology, including calibration of inoization chambers, radiation dosimetry in diagnostic radiology and radiotherapy, quality assurance in radiology and radiotherapy, luminescence for dosimetry (TLD).

Positions

• 1972-1975, University of Washington, Research Assistant Professor

• 1975-1976, University of Wisconsin, Visiting Assistant Professor

• 1976-1979, University of Wisconsin, Clinical Assistant Professor

• 1979-1986, University of Wisconsin, Clinical Associate Professor

• 1986-1990, Radiation Measurements Inc., Product Development Manager

• 1990-1997, University of Wisconsin, Clinical Professor

Awards and Honors

• Larry Lanzel Award

• Randall Caswell Award

• Best Paper in Medical Physics 2008 - Farrington Daniels Award

Memberships

• American Association of Physicists in Medicine (Fellow)

• American Physical Society

• Council on Ionizing Radiation Measurements & Standards

• Health PHYSICS Society

• Sigma Xi

Patents

• Improved kVp Meter, U.S. Patent No. 4,935,950, 1990, industry-owned

• Direct Response Ultraviolet Dosimeter Utilizing Thermoluminest MgO, U.S. Patent No. 3,924,135, 1975, institution-owned

Publications

• "Calibration Services for Medical Applications of Radiation," L. A. DeWerd, pp. 243-248, in Proceedings of the Workshop on Measurement Quality Assurance for Ionizing Radiation, held in Gaithersburg, MD March 16-18, 1993, PNL-10076 CONF-9303220 ed. J. A. Heath and K. L. Swinth, available from US National Technical Information Service, (1996).

• "QA Experience at the University of Wisconsin Accredited Dosimetry Calibration Laboratory," L. A. DeWerd and J. A. Micka, pp. 385-392, in Proceedings of the Workshop on Measurement Quality Assurance for Ionizing Radiation, held in Gaithersburg, MD March 16-18, 1993, PNL-10076 CONF-9303220 ed. J. A. Heath and K. L. Swinth, available from US National Technical Information Service, (1996).

• "TLD Measurements of in vivo Mammographic Exposures and the Calculated Mean Glandular Dose across the United States," J. R. Gentry and L. A. DeWerd, Med. Phys. 23, #6, pp. 899-903 (1996).

• "Quality Assurance Testing Service with Radiochromic Film," R.C. Schmidt, L.A. DeWerd, and E.G. Hendee, Brain Trust 1: No. 4, pp. 8,9 (1996).

• "Radiation Dosimetry," Bruce R. Thomadsen, Larry A. DeWerd and Darwin Zellmer, Encyclopedia of Cancer, Volume III, pp. 1372-1394, Academic Press, San Deigo, CA, (1997).

• "Comparison of exposure standards in the mammography x-ray region," J. G. Coletti, D.W. Pearson, L. A. DeWerd, C. M. O'Brien and P. J. Lamperti, Med. Phys. 24, #8, pp. 1263-1267 (1997).

• "Entrance Skin Exposure and Mean Glandular Dose: Effect of Scatter and Field Gradient at Mammography," Kwan H. Ng, Robert J. Aus, Larry A. DeWerd, and John R. Vetter, Radiology 205: 395-398 (1997).

• "Brachytherapy Dosimetric Assessment: Source Calibration, Larry A. DeWerd, Categorical Course in Brachytherapy Physics Syllabus, Bruce Thomadsen, ed., pp. 143-153, RSNA publications, Oak Brook, IL, (1997).

• "Calibration Importance of Ionizing Radiation for Medical Applications in Radiation Therapy and Diagnostic Radiology," L. A. DeWerd, Proceedings of the National Conference of Standards Laboratories Symposium: Metrology, Why Not?!!, July 19-23, 1998, Albuquerque, New Mexico, pp. 105-117 (1998).