PUBLICATIONS

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D.A. Viggars, C.W. Yu, J.S. Lewis, and S. Shalev (1994). "An Algorithm for the Rapid Calculation of the Effects of Random Localization Uncertainties on Radiotherapy Dose Distributions", Proceedings of the XIth International Conference on the use of Computers in Radiation Therapy, ed. AR Hounsell, JM Wilkinson and PC Williams, Medical Physics Publishing, Madison, 1994, p.72.

J.S. Lewis, E. Tomchuk, E. Bock (1993). "High Field Carbon-13 Relaxation of 5CB: Chemical Shift Anisotropy as a probe of Nematic Dynamics", Liquid Crystals, 14, 1507-1517, 1993.

J.S. Lewis, E. Tomchuk, E. Bock (1991). "A Carbon-13 nuclear magnetic resonance relaxation study of the reentrant 6OCB-8OCB", Can. J. Physics, 69, 1454-1458, 1991. Paper was presented at the 13th International Liquid Crystal Conference, Vancouver, Canada, July 22-27 1990.

J.S. Lewis, P. Chan, E. Tomchuk, E. Bock (1991). "A Carbon-13 Study of Conformation and Order in 50.7 and 50.7-d1", Mol. Cryst. Liq. Cryst., 198, 171-189, 1991.

J.S. Lewis, E. Tomchuk, E. Bock (1991). "Carbon-13 Relaxation and Order in neat 6OCBB and 8OCB", Mol. Cryst. Liq. Cryst., 198, 191-200, 1991. Paper was presented at the 13th International Liquid Crystal Conference, Vancouver, Canada, July 22-27 1990.

J.S. Lewis, E. Tomchuk, E. Bock (1991). "Carbon-13 Relaxation and Order in neat 6OCBB and 8OCB", Mol. Cryst. Liq. Cryst., 198, 191-200, 1991.

J.S. Lewis, P. Chan, E. Tomchuk, E. Bock (1991). "A Carbon-13 Study of Conformation and Order in 50.7 and 50.7-d1", Mol. Cryst. Liq. Cryst., 198, 171-189, 1991.

J.S. Lewis, E. Tomchuk, E. Bock (1989). "A Carbon-13 Study of Relaxation in the Mesophases of 50.7 and the 5CB Homologous Series", Liquid Crystals, 5, 1033-1044, 1989.

J.S. Lewis, Z. Shams, E. Tomchuk, E. Bock (1989). "Molecular Dynamics and Carbon-13 Relaxation in the Nematic and Smectic A, C and B Phases of 50.7," Mol. Cryst. Liq. Cryst., 173, 49-59, 1989.

J.S. Lewis, Z. Shams, E. Tomchuk, E. Bock (1989). "Molecular Dynamics and Carbon-13 Relaxation in the Nematic and Smectic A, C and B Phases of 50.7," Mol. Cryst. Liq. Cryst., 173, 49-59, 1989.

J.S. Lewis, E. Tomchuk, E. Bock (1989). "A Carbon-13 Study of Relaxation in the Mesophases of 50.7 and the 5CB Homologous Series", Liquid Crystals, 5, 1033-1044, 1989. Paper was presented at the 12th International Conference on Liquid Crystals, Freiburg, Federal Republic of Germany, August 1988.

Peeling, J., J.S. Lewis, M. Samoiloff, E. Bock & E. Tomchuk (1988). Biological effects of magnetic fields: chronic exposure of the nematode Panagrellus redivivus. Magn Reson Imaging 6(6), 655-60. URL = 89096366

J.S. Lewis, E. Tomchuk, E. Bock (1988). "Sample Heating Effects in Decoupled Carbon-13 studies of Thermotropic Mesogens", J. Magn. Resonance, 78, 321-326, 1988.

J.S. Lewis, J. Peeling, E. Tomchuk, W. Danchura, J. Bozek, H.M. Hutton, E. Bock (1987). "Carbon-13 Study of Relaxation in the 5CB Homologous Series", Mol. Cryst. Liq. Cryst., 144, 57-86, 1987. Paper was presented at the 11th International Conference on Liquid Crystals, Berkeley, U.S.A., July, 1986.

R.Y. Dong, G.M. Richards, J.S. Lewis, E. Tomchuk, E. Bock (1987). "Spectral Density of Motion in a Reentrant Nematic by Deuterium NMR", Mol. Cryst. Liq. Cryst., 144, 33-42, 1987. Paper was presented at the 11th International Conference on Liquid Crystals, Berkeley, U.S.A., July, 1986.

J.S. Lewis, E. Tomchuk, E. Bock (1987). "Intermolecular and Intramolecular Contributions to the Proton Relaxation of the Liquid Crystal 4-Cyano-4'-n-pentyl-d11-biphenyl: Nematic and Supercooled Nematic Regions", Canadian Journal of Physics, 65, 115-121, 1987.

J. Bozek, H.M. Hutton, J.S. Lewis, E. Tomchuk, E. Bock (1985). "Carbon-13 Study of Relaxation and Chemical Shifts in the Smectic Liquid Crystals 8CB", Mol. Cryst. Liq. Cryst., 122, 191-203, 1985. Paper was presented at the 10th International Conference on Liquid Crystals, York, U.K., July, 1984.

R.Y. Dong, J.S. Lewis, E. Tomchuk, E. Bock (1985). "DMR Study of Molecular Order in a Reentrant Nematic Liquid Crystal," Mol. Cryst. Liq. Cryst., 122, 35-40, 1985. Paper was presented at the 10th International Conference on Liquid Crystals, York, U.K., July, 1984.

R.Y. Dong, J.S. Lewis, E. Tomchuk, J.J. Visintainer, E. Bock (1983). "Proton Dipolar Spin-Lattice Relaxation in the Smectic phases of TBBA", Mol. Cryst. Liq. Cryst., 98, 139-147, 1983. Paper was presented at the 9th International Conference on Liquid Crystals, Bangalore, India, December 1982.

J.S. Lewis, E. Tomchuk, H.M. Hutton, E. Bock (1983). "13C Chemical Shifts and Spin-Lattice Relaxation in the Nematic Liquid Crystal 4-Cyano-4'-n-Pentylbiphenyl", J. Chem. Phys., 78, 632-637, 1983.

J.S. Lewis, E. Tomchuk, E. Bock (1983). "Inter and Intramolecular Contributions to the Proton Dipolar and Rotating Frame Spin-Lattice Relaxation Times in the Nematic Phase of the Liquid Crystal 5CB-d11", Mol. Cryst. Liq. Cryst., 97, 387-396, 1983. Paper was presented at the 9th International Conference on Liquid Crystals, Bangalore, India, December 1982.

R.Y. Dong, J. Lewis, E. Tomchuk, C.C. Wade, E. Bock (1981). "Deuterium NMR Study of Molecular Order and Confirmation in the Nematic Phase of p-Azoxyanisole", J. Chem. Phys., 74, 633-636, 1981.

B.A. Pettit, J.S. Lewis, R.E. Wasylishen, W. Danchura, E. Tomchuk, E. Bock (1981). "A Deuterium NMR Study of Orientational Order in Tertiary-Butyl-Bromide", J. Magn. Resonance, 44, 508-517, 1981.

J.S. Lewis, E. Tomchuk, E. Bock (1981). "Inter and Intramolecular Contributions to the Proton Relaxation in the Nematic Phase of the Liquid Crystal 5CB", Bulletin of Magnetic Resonance, 2, 314, 1981. Paper was presented at the Joint Ismar-Ampere International Conference on Magnetic Resonance, Delft, The Netherlands, August, 1980.

R.Y. Dong, J.S. Lewis, M.E. Havelock, E. Tomchuk, E. Bock (1981). "Molecular Motions in smectic
Oxybenzylidene-d1-n-Heptylaniline: A Nuclear Relaxation Study", J. Magn. Resonance, 45, 223-228, 1981.

R.Y. Dong, E. Bock, J.S. Lewis, E. Tomchuk (1980). "Intermolecular and Intramolecular Contributions to Proton Relaxation in MBBA-(d_13)", J. Chem. Phys., 72, 5014-5018, 1980. Preliminary work on paper was presented at the CAP Congress, Vancouver, B.C., June, 1979.

R.Y. Dong, J.S. Lewis, E. Tomchuk, E. Bock (1980). "Rotating Frame Spin-Lattice Relaxation in the Nematic Phase of MBBA-(d_13)", Solid State Commun., 34, 595-597, 1980.

R.E. Wasylishen, B.A. Pettitt, J.S. Lewis (1979). "A Deuterium NMR Study of Molecular Order and Reorientation in Camphor", Chemical Physics Letters, 67, 459-462, 1979.

R.Y. Dong, E. Bock, J.S. Lewis, E. Tomchuk (1979). "Molecular Order and Director Fluctuations in MBBA as Determined by Deuterium Magnetic Resonance", J. de Physique, 40, 243-245, 1979. Paper was presented at the 7th International Liquid Crystal Conference, Bordeaux, France.

G.C. Levy, M.P. Cordes, J.S. Lewis, D.E. Axelson (1977). "Multiple Frequency (field) Carbon-13 Spin-Lattice Relaxation Studies. Probe to Cooperativity of Complex Molecular Motions", J. of the American Chem. Society, 99, 5492-5494, 1977.

R. Y. Dong, J. Lewis, E. Tomchuk, E. Bock (1978). "Deuterium NMR Study of Molecular Order and Reorientation in the Nematic Phase of p-Methoxy-d3-Benzilidene-d1-p-n-d9-Aniline", J. Chem. Phys., 69, 5314-5318, 1978. Preliminary work on paper was presented at the CAP Congress, London, Ontario, June, 1978.

J. Lewis, R. Dong, E. Tomchuk, E. Bock, C.G. Wade (1979). "Proton and Deuteron Line Shape Study of Nematic Para-Azoxyanisole", Magnetic Resonance and Related Phenomena, Proceedings of the XXth Congress Ampere, Ed. E. Kundla, E. Lippmaa, T. Saluvere, Springer-Verlag, Berlin, 1979, p. 449. Paper was presented at the XXth Congress Ampere, Taillinn, U.S.S.R., August, 1978.

PRESENTATIONS

B. McCurdy, K. Malkoske, K. Furutani, A. Berndt, J. Bews, J. Lewis (2002). "Commissioning of a convolution/superposition dose calculation algorithm". Presented at the Western Canadian Medical Physics Conference - WesCan 2002.

J. Lewis, J. Beck, B. McCurdy, S. Pistorius (2001). "Accuracy in the Presence of Inhomogeneities of Two Commercial Electron Planning Systems." Presented at AAPM, 2001, abstract in Medical Physics, 28, 1826, 2001.

S. El-Sayed, D. Viggars, J. Lewis, Margaret Stewart (1997). "Comparison of Conventional (CVT) and Conformal (CFT) Radical Radiation Treatment Planning Protocols of Intra-Thoracic Malignancies", Radiotherapy & Oncology, 43 (Suppl. 2), S208, 1997.

M. Mirzai, J. Lewis, S. Pistorius (1995). "Standardization of Equivalent Squares and the use of TPR's for the TBI Calculations." Presented at COMP, 1995, abstract in Medical Physics, 22, 679, 1995.

D.A. Viggars, C.W. Yu, J.S. Lewis, and S. Shalev (1994). "An efficient model of random localization uncertainties for use in calculating their effect on radiotherapy dose Distributions." Presented at the Radiological Society of North America 80th Scientific Assembly, 1994, abstract in Radiology, 193P, 142,1994.

J.S. Lewis, C.W. Yu, D.A. Viggars and S. Shalev (1994). "Compensation for random localization uncertainties in the radiation therapy for prostate cancer." Presented at the Radiological Society of North America 80th Scientific Assembly, 1994, abstract in Radiology, 193P, 174, 1994.

W.J. van der Putten, J.S. Lewis (1994). "Low-cost method for improved portal film contrast." Presented at the Radiological Society of North America 80th Scientific Assembly, 1994, abstract in Radiology, 193P, 142, 1994.

J.S. Lewis, E. Tomchuk, E. Bock (1992). "Carbon-13 and Deuterium Relaxation of the Separate Molecular Components of the Reentrant 6OCB/8OCB." Presented at the 14th International Liquid Crystal Conference, Pisa, Italy, June 21-26, 1992.

J.S. Lewis, E. Tomchuk, J. Peeling, E. Bock (1990). "23Na Variable Field NMR T1 Measurements of Healthy Mouse Leg Muscle." Presented at the 10th International Biophysics Congress, Vancouver, Canada, August 3-7 1990, p.496 of Abstracts.

E. Bock, J.S. Lewis, E. Tomchuk (1990). "A Carbon-13 NMR Relaxation Study of the Reentrant 6OCB/8OCN." Presented at the 1990 CAP Congress, St. John's, Newfoundland, Canada, June 18-20 1990.

PROFESSIONAL MEMBERSHIPS

COMP: Canadian Organization of Medical Physics
AAPM: American Association of Physicists in Medicine
CCPM: Canadian College of Physicists in Medicine (Member)

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