Proton therapy facilities are shielded to limit the amount of secondary radiation to which patients, occupational workers and members of the general public are exposed. The most commonly applied...
Neutron radiation area monitoring system for proton therapy facilities (2005)
Newhauser, W. D., Ding, X., Giragosian, D., Nill, S., Titt, U.
A neutron radiation area monitoring system has been developed for proton accelerator facilities dedicated to cancer therapy. The system comprises commercial measurement equipment, computer hardware...
Patient neutron dose equivalent exposures outside of the proton therapy treatment field (2005)
Polf, J. C., Newhauser, W. D., Titt, U.
A large fraction of dose to healthy tissue located outside of the treatment field during proton therapy is attributable to neutrons produced in the beam-delivery apparatus. In this work, the neutron...
Bues, M., Newhauser, W. D., Titt, U., Smith, A. R.
In step and shoot spot-scanning, a small-diameter proton beam is magnetically swept and varied in energy in order to cover the tumour. Initial estimates of the beam size indicate that additional...
Design tools for proton therapy nozzles based on the double-scattering foil technique (2005)
Fontenot, J. D., Newhauser, W. D., Titt, U.
Proton therapy has been increasing over the past several years, with several new treatment facilities being built in Europe, Japan and the United States. In this work, analytical and Monte Carlo...
Kerma Measurements in Polyenergetic Neutron Fields (1997)
Newhauser, W.D., Schrewe, U.J., Brede, H.J., Matzke, M., DeLuca, P.M.
Absorbed dose was measured as a function of neutron energy with a small spherical proportional counter irradiated in the pulsed-beam broad energy spectrum neutron fields of the...
Schrewe, U.J., Alberts, W.G., Newhauser, W.D., Brede, H.J., DeLuca, P.M.
Using kerma factor data, for H, C, N, and O in the neutron energy range from 20 MeV to 100 MeV provided by recent calculations and evaluations, the absorbed dose conversion factor alphat.p from A-150...
Measurement of Neutron Kerma Factors in C and O: Neutron Energy Range of 20 MeV to 70 MeV (1995)
Schrewe, U.J., Newhauser, W.D., Brede, H.J., Dangendorf, V., DeLuca, P.M., Gerdung, S., ...
Kerma factors for oxygen and carbon have been measured in nearly monoenergetic neutron beams of energies between 34 MeV and 66 MeV. The kerma was determined experimentally with low pressure...
Gas-to-Wall Absorbed Dose Conversion Factors from 25 to 250 MeV Neutron Energy (1995)
Newhauser, W.D., Schrewe, U.J., Wiegel, B.
Gas-to-wall absorbed dose conversion factors rm.g were calculated with Bragg_Gray cavity theory for the 25 to 250 MeV neutron energy range. Calculations of rm.g were made for propane-based...