Zobrazeno 1 - 10
of 25
pro vyhledávání: '"R G, Lane"'
Publikováno v:
Graphical Models and Image Processing. 57:206-219
This paper compares the synthesis of fractal images using both wavelets and a modified form of the random midpoint displacement algorithm. The accuracy of the generated fractal is investigated by an analysis of its second-order temporal statistics. I
Publikováno v:
Physics in Medicine and Biology. 35:423-427
The authors calculated the accuracy of isodose lines for a variety of clinical treatment techniques and beam energies using linear, quadratic and cubic spline interpolation methods. For a single beam, the greatest positional errors occur on either si
Publikováno v:
Medical physics. 20(1)
Segmented conformal radiation therapy is a new computer-controlled treatment technique under investigation in which the target volume is subdivided into thick transverse segments each of which is then treated individually by rectangular transverse ab
Publikováno v:
Medical physics. 18(6)
A method of incorporating dose-volume considerations within the framework of conventional linear programming is presented. This method is suitable for the optimization of beam weights and angles using a conformal treatment philosophy (i.e., tailoring
Publikováno v:
Physics in medicine and biology. 36(10)
A variation of simulated annealing optimization called 'constrained simulated annealing' is used with a simple annealing schedule to optimize beam weights and angles in radiation therapy treatment planning. Constrained simulated annealing is demonstr
Publikováno v:
Medical physics. 18(2)
Linear programming is a versatile mathematical tool for optimizing radiation therapy treatment plans. For planning purposes, dose constraint points, possible treatment beams, and an objective function are defined. Dose constraint points are specified
Publikováno v:
Medical physics. 17(3)
In computer dose calculations using scatter-air ratio sector summation algorithms, the primary dose from the target to points away from the central axis of a beam is computed using an exponential intensity model of the source and a transmission param
Autor:
R. G. Lane, M. Tallon
Publikováno v:
Applied Optics. 31:6902
An analysis of the problem of wave-front reconstruction from Shack-Hartmann measurements is presented. The wave-front aberration is assumed to result from passage of the wave front through Kolmogorov turbulence. Limitations of using Zernike polynomia
Publikováno v:
The Journal of Immunology. 141:2043-2049
Natural suppression has been described in several immunologic systems in which splenocytes are not only incapable of generating an immune response, but are also able to non-specifically suppress normal splenocyte reactivity. Natural suppressor cells
Publikováno v:
Journal of the Tennessee Medical Association. 79(11)