1999 | |
1. | Beam Dosimetry for Radiotherapy and Radiobiology, pp.27-41, American Association of Physicists in Medicine Symposium Proceedings No. 11 Medical Physics Publishing , Madison, WI 1999. |
2. | L.A. DeWerd, “The Air-Kerma Calibration Procedure for Radiotherapy X-ray Beams,” In; Kilovoltage X-ray Beam Dosimetry for Radiotherapy and Radiobiology, pp. 89-102, C.M. Ma and Jan P. Seuntjens, ed, American Association of Physicists in Medicine Symposium Proceedings No. 11 Medical Physics Publishing , Madison, WI 1999. |
3. | P.M. Deluca and L. A. DeWerd, "Dosimetry of high energy x rays and electrons," In: Biomedical Uses of Radiation, Part B pp. 741-796 (W.R. Hendee, Ed.). New York: VCH Publishers (subsidiary of John Wiley & Sons Inc.), 1999. |
4. | R. J. Aus, L. A. DeWerd, D. W. Pearson, J. A. Micka, and K. H. Ng “Dependence of scatter on atomic number for x rays from tungsten and molybdenum anodes in the mammographic energy range,” Med. Physics 26 (7): 1306 – 1311 (1999). |
5. | T. Kron, L. DeWerd, P. Mobit, J. Muniz, A. Pradhan, M. Toivonen and M. Waligorski, “A checklist for reporting of thermoluminescence dosimetry (TLD) measurements,” Phys. Med. Biol. 44: L15-17 (1999). |
6. | S. J. Goetsch, B. D. Murphy MS, R. Schmidt, J. Micka, L. DeWerd, Y. Chen, and S. Shockley, “Physics of Rotating Gamma Systems for Stereotactic Radiosurgery,” Int. J. Radiation Oncology Biol. Phys., Vol. 43, No. 3: 689-696 (1999). |
7. | L. A. DeWerd and L. K. Wagner “Characteristics of radiation detectors for diagnostic radiology,” Applied Radiation and Isotopes 50: 125-136 (1999). |
8. | B. R. Thomadsen, L. A. DeWerd, T. McNutt, S. DeWerd, and D. Schmidt, “Assessment of the strength of individual Ir seeds in ribbons,” Med. Phys. 26, 2471-2475 (1999). |
9. | L. A. DeWerd, H. Jarvinen, et al, “Calibration of Brachytherapy Sources,” International Atomic Energy Agency, IAEA-TECDOC-1079, April 1999. |
10. | J. F. Williamson, B. M. Coursey, L. A. DeWerd, W. F. Hanson, R. Nath, and G. 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,” Med. Physics 26 (4): 570-573 (1999). |
11. | J. F. Williamson, B. M. Coursey, L. A. DeWerd, W. F. Hanson, R. Nath, M. J. Rivard, and G. Ibbot, “On the use of apparent activity (Aapp) for treatment planning of I and Pd interstitial brachytherapy sources: Recommendations of the American Association of Physicists in Medicine Radiation Therapy Committee Subcommittee on Low-Energy Brachytherapy Source Dosimetry,” Med. Phys. 26, 2529-2530 (1999). |
1998 | |
1. | L. A. DeWerd, “Calibration Importance of Ionizing Radiation for Medical Applications in Radiation Therapy and Diagnostic Radiology” Proceedings of the National Conference of Standards Laboratories Symposium: Metrology, Why Not?!!, July 19-23, 1998, Albuquerque, New Mexico, pp. 105-117 (1998). |
2. | L. A. DeWerd and L. K. Wagner, “Characteristics of Radiation Detectors for Diagnostic Radiology,” pp. 125-136 In Subject Dose in Radiological Imaging, Kwan-Hoong Ng, D. A. Bradley and H. M. Warren-Forward, ed. Elsevier Science, Amsterdam 1998. |
3. | J. Williamson, B. M. Coursey, L. A. DeWerd, W. F. Hanson, and R. Nath, "Dosimetric prerequisites for routine clinical use of new low energy photon interstitial brachytherapy sources,” Med. Phys. 25, #12, pp. 2269-2270 (1998). |
1997 | |
1. | L. A. DeWerd, "Response to Comment ‘TLD Measurements of in vivo Mammographic Exposures and the Calculated Mean Glandular Dose across the United States,’ Letter to the Editor, Med. Phys. 24, #2, pp. 309-311 (1997) |
2. | J. G. Coletti, D. W. Pearson, L. A. DeWerd, C. M. O’Brien, and P. J. Lamperti “Comparison of exposure standards in the mammography x-ray region,” Med. Physics 24 (8): 1263-1267 (1997). |
3. | K. H. Ng, R. J. Aus, L. A. DeWerd, and J. R. Vetter, “Entrance Skin Exposure and Mean Glandular Dose: Effect of Scatter and Field Gradient at Mammography,” Radiology 205: 395-398 (1997) |
4. | B. R. Thomadsen, L. A. DeWerd and D. Zellmer, "Radiation Dosimetry," Encyclopedia of Cancer, Volume III, pp. 1372-1394, Academic Press, San Diego, CA, (1997). |
5. | L. A. DeWerd “Brachytherapy Dosimetric Assessment: Source Calibration,” RSNA Categorical Course in Brachytherapy Physics: 143-153 (1997). |
6. | L. A. DeWerd, “Brachytherapy Dosimetric Assessment: Source Calibration," Categorical Course in Brachytherapy Physics Syllabus, Bruce Thomadsen, ed., pp. 143-153, RSNA publications, Oak Brook, IL, (1997) |
1996 | |
1 | J. R. Gentry and L. A. DeWerd, "TLD measurements of in vivo mammographic exposures and the calculated mean glandular dose across the United States," Med. Phys. 23: 899-903 (1996). |
2. | R. C. Schmidt, L. A. DeWerd, and E. G. Hendee, “Quality Assurance Testing Service with Radiochromic Film,” BRAINTRUST December 1996: 7-9 (1996). |
3. | L. A. DeWerd and J. A. Micka, "QA Experience at the University of Wisconsin Accredited Dosimetry Calibration Laboratory," 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). |
4. | L. A. DeWerd "Calibration Services for Medical Applications of Radiation," 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). |
1995 | |
1 | L. A. DeWerd, J. A. Micka, C.S. Reft and F. T. Kuchnir, “Addendum: A comparison of methods for calibrating parallel-plate chambers – Values of Ngas/NxAion and Ngas/ NkAion for parallel-plate chambers,” Med. Physics 22 (4): 481 (1995). |
2. | J. G. Coletti, D. W. Pearson, and L. A. DeWerd, “Mammography exposure standard: Design and characterization of free-air ionization chamber,” Rev. Sci. Instrum. 66 (3): 2574-2577 (1995). |
3. | M. B. Podgorsak, L. A. DeWerd, B. R. Paliwal A. K. Ho, and Claudio H. Sibata, “Accuracy of the Point Source Approximation to High Dose-Rate Ir-192 Sources,” Medical Dosimetry Vol. 20, No. 3: 177-181 (1995). |
4. | M. B. Podgorsak, L. A. DeWerd, and B. R. Paliwal,"The air kerma-rate constant of high dose-rate Ir-192 sources," Radiol. Oncol. 29: 153-162 (1995). |
5. | L. A. DeWerd, P. Jursinic, R. Kitchen and B. R. Thomadsen, "Quality Assurance Tool for High Dose Rate Brachytherapy," Med. Phys. 22: (#4) 435-440 (1995). |
1994 | |
.1 | C.S. Reft, F. T. Kuchnir, L. A. DeWerd, J. A. Micka, and F. H. Attix, “A comparison of methods for calibrating parallel-plate chambers,” Med. Physics 21 (12): 1953-1957 (1994). |
2. | L. A. DeWerd, and B. R. Thomadsen, “Source Strength Standards and Calibration of HDR/PDR Sources” Brachytherapy, AAPM 1994 Summer School, Medical Physics Publishing Corp, Ch. 27: 1-15 (1994). |
3. | L. A. DeWerd, G. A. Ezzell, and J. F. Williamson “Calibration Principles and Techniques” High Dose Rate Brachytherapy: A Textbook, Futura Publishing Company, Inc. Ch. 5: 59-78 (1994). |
1993 | |
1. | L. A. DeWerd and J. A. Micka, “QA Experience at the University of Wisconsin Accredited Dosimetry Calibration Laboratory,” presented at: Workshop On Measurement Quality Assurance For Ionizing Radiation, March 16-18, Gaithersburg, MD (1993) |
2. | L. A. DeWerd and J. A. Micka, “Calibration Services for Medical Applications of Radiation” presented at: Workshop On Measurement Quality Assurance For Ionizing Radiation, March 16-18, Gaithersburg, MD (1993). |
3. | L. A. DeWerd and N. B. Chiu, “The Determination of Radiation Dose By Mail for Diagnostic Radiological Examinations with Thermoluminescent Dosemeters,” Radiation Protection Dosimetry, Vol. 47, No. 1/4: 509-512 (1993). |
4. | E. J. Fairbanks and L. A. DeWerd, “Thermoluminescent characteristics of LiF:Mg, Ti from three manufacturers,” Med. Physics 20 (3): 729-731 (1993). |
5. | L. A. DeWerd, S. M. DeWerd, and F. H. Attix “Solution to Inverse Square Equations Involving Distance Error and Scatter Correction” Wisconsin Med. Physics WMP-197: 1-6; Figures 1, 2, & 3; Table 1; and Appendix (1993). |
6. | M. B. Podgorsak, L. A. DeWerd, and B. R. Paliwal “ The half-life of high dose rate Ir-192 sources” Med. Physics 20 (4): 1257-1259 (1993). |
1992 | |
1. | S. J. Goetsch Ph.D., F. H. Attix MS, L. A. DeWerd Ph.D., and B. R. Thomadsen Ph.D. “A New Re-Entrant Ionization Chamber for the Calibration of Iridium-192 High Dose Rate Sources” Int. J. Radiation Oncology Biol. Phys. Vol. 24: 167-170 (1992). |
2. | M. B. Podgorsak, L. A. DeWerd, B. R. Thomadsen & B. R. Paliwal, "Radiation Sensitivity of Well Chambers for HDR Iridium-192 Calibrations," Chapter 72, pp311-314 in International Brachytherapy, Nucletron International B. V. publisher (1992). |
3. | G.A. Ezzell, J. Hicks and L.A. DeWerd, "Calibration & Quality Assurance: I," Chapter 54, pp.233-236 in International Brachytherapy, Nucletron International B. V. publisher (1992). |
4. | M. B. Podgorsak, L. A. DeWerd, B. R. Thomadsen and B. Paliwal,"Thermal and scatter effects on the radiation sensitivity of well chambers used for high dose rate Ir-192 calibrations," Med Phys. 19: (5) 1311-1314 (1992). |
5. | C. Constantinou, J. C. Harrington, and L. A. DeWerd, "An electron density calibration phantom for CT-based treatment planning computers" Med Phys. 19: (2) 325-328 (1992). |
1991 | |
1. | S. J. Goetsch and K. S. Sunderland “Surface dose rate calibration of Sr-90 plane ophthalmic applicators,” Med. Physics 18 (2): 161-166 (1991). |
2. | S. J. Goetsch, F. H. Attix, D. W. Pearson, and B. R. Thomadsen “Calibration of Ir192 high-dose-rate afterloading systems” Med. Physics 18 (3): 462-467 (1991). |
3. | S. J. Goetsch, F. H. Attix, D. W. Pearson, and B. R. Thomadsen “Calibration of Ir192 High-Dose-Rate Afterloading Systems” Wisconsin Med. Physics WMP-192: 1 – 17 (1991). |
1990 | |
1. | L. A. DeWerd, J. Price, J. R. Cameron, and S. J. Goetsch, “Evaluation of a Commercial Diode Monitor for Mailed Quality Control of Therapy Units,” Int. J. Radiation Oncology Biol. Phys. Vol. 19: 1053-1057 (1990). |
2. | F. N. Ranallo et al., “Instrument for the Measurement of X-Ray Beam Characteristics”, United States Patent #4,935,950 (1990). |
3. | L. A. DeWerd, "Monitoring Mammographic Performance," Administrative Radiology 9: 43 (1990). |
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