Zobrazeno 1 - 10
of 10
pro vyhledávání: '"J. B. Farr"'
Publikováno v:
Crop Science. 45:1800-1808
Texas soybean [Glycine max (L.) Merr.] growers generally use row spacings ranging from 15 to 102 cm and seeding rates that provide 25 to 62 plants m -2 . However, the interaction of cultivars with planting configuration is not well understood. The ob
Publikováno v:
Crop Management. 4:1-12
Publikováno v:
Medical physics. 40(7)
The purpose of this investigation was to compare and contrast the measured fundamental properties of two new types of modulated proton scanning systems. This provides a basis for clinical expectations based on the scanned beam quality and a benchmark
Autor:
J B, Farr, A E, Mascia, W C, Hsi, C E, Allgower, F, Jesseph, A N, Schreuder, M, Wolanski, D F, Nichiporov, V, Anferov
Publikováno v:
Medical physics. 35(11)
A proton beam delivery system on a gantry with continuous uniform scanning and dose layer stacking at the Midwest Proton Radiotherapy Institute has been commissioned and accepted for clinical use. This paper was motivated by a lack of guidance on the
Publikováno v:
Australasian physicalengineering sciences in medicine. 30(4)
Lung cancer treatment presents a greater treatment planning and treatment delivery challenge in proton beam therapy compared to conventional photon therapy due to the proton beam's energy deposition sensitivity to the breathing-induced dynamic tissue
Publikováno v:
Medical physics. 34(9)
Teletherapy with high linear energy transfer radiations (LET), perhaps more than with low LET types, requires careful beam collimation to limit effects to normal structures. Intensity modulated techniques may also hold promise in this regard. Accordi
Publikováno v:
Medical Physics. 42:3332-3332
Purpose: To reconstruct phase-space information upstream of patient specific collimators for Monte Carlo simulations using only radiotherapy planning system data. Methods: The proton energies are calculated based on residual ranges, e.g., sum of pres
Publikováno v:
Medical physics. 33(9)
The electromechanical properties of a 120-leaf, high-resolution, computer-controlled, fast neutron multileaf collimator (MLC) are presented. The MLC replaces an aging, manually operated multirod collimator. The MLC leaves project 5 mm in the isocentr
Publikováno v:
Radiation protection dosimetry. 110(1-4)
Miniature CaF2:Tm (TLD-300) were adopted for dosimetry in a mixed neutron/gamma beam produced by the Detroit superconducting cyclotron. A method utilizing the linear relationship between the ratios of the areas under the low and high temperature peak