X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1993-06-18
1995-05-23
Dzierzynski, Paul M.
X-ray or gamma ray systems or devices
Specific application
Absorption
378153, 36441326, A61N 501
Patent
active
054188270
ABSTRACT:
A radiation therapy apparatus, for a radiation therapy machine providing an irradiation of a tumor at 360.degree. about the tumor within a plane, determines a distribution of charges in a conductor that would produce a potential energy field matching the desired dose to the tumor in the plane. The fluence of any given ray through the tumor may be determined by summing the charges along the ray's path. The distribution may include areas of no irradiation which may require negative fluences. Physically realizable non-negative fluences are obtained by an iterative process of adjusting an input dose map in light of the actual dose produced by the calculated fluences.
REFERENCES:
patent: 3487559 (1970-01-01), Freedman
patent: 3987281 (1976-10-01), Hodes
patent: 4754147 (1988-06-01), Maughan et al.
patent: 4794629 (1988-12-01), Pastyr et al.
patent: 4817125 (1989-03-01), Sklebitz
patent: 4868843 (1989-09-01), Nunan
patent: 4868844 (1989-09-01), Nunan
patent: 4905268 (1990-02-01), Mattson et al.
patent: 4987309 (1991-01-01), Klasen et al.
patent: 5012506 (1991-04-01), Span et al.
patent: 5317616 (1994-05-01), Swerdloff et al.
patent: 5351280 (1994-09-01), Swerdloff et al.
Calculation and Application of Point Spread Functions for Treatment planning with High Energy Photon Beams, Acta Oncologica 26 (1987) pp. 49-56, A. Ahnesjo, et al.
Methods of Image Reconstruction from Projections Applied to Conformation Radiotherapy, Phys. Med. Biol., 1990, vol. 35, No. 10, 1423-1434, Bortfeld et al.
Feasibility Solutions in Radiation Therapy Treatment Planning, Dept. of Radiation Therapy, Univ. of PA School of Med., pp. 220-224, Altschuler, et al. (1984).
A Primer on Theory & Operation of Linear Accelerators in Radiation Therapy, Medical Physics Pub. Corp., (1981) C. J. Karzmark, et al.
The Accuray Neutron 1000, A Medical Systems for Frameless Stereotoxic Radiosurgery, Accuray, Inc., J. R. Adler, et al., May 1992.
Optimization of Stationary and Moving Beam Radiation Therapy Techniques, Radiotherapy and Ocology, 12 (1988) 129-140, A. Brahme.
A Unified Approach to the Optimization of Brachytherapy and External Beam Dosimetry, Int. J. Radiation Ocology Biol. Phys., vol. 20 pp. 859-873, Holmes, et al. (1991).
Optimization by Simulated Annealing of Three-Dimensional Conformal Treatment Planning for Radiation Fields Defined by a Multileaf Collimator, Phys. Med. Biol., 1991, vol. 36, No. 9, 1201-1226, S. Webb.
Optimization of Conformal Radiotherapy Dose Distributions by Simulated Annealing, Phys. Med. Biol., vol. 34, No. 10, 1349-1370, S. Webb (1989).
A Constrained Least-Squared Optimization Method for External Beam Radiation Therapy Treatment Planning, Med. Phys. 11(5), Sep./Oct. 1984 pp. 659-664, G. Starkschall.
On the Use of Cimmino's Simultaneous Projections Method for Computing a Solution of the Inverse Problem in Radiation Therapy Treatment Planning, Inverse Problems, 4 (1988) 607-623, Y. Censor, et al.
Tomotherapy: A New Concept for the Delivery of Conformal Radiotherapy using Dynamic Compensation, Jul. 1992, Swerdloff, et al.
Progress In Medical Radiation Physics vol. 2, 1985, edited by Colin Orton, Plenum Press, W. A. Jennings pp. 1-111.
De Leone Renato
Deasy Joseph O.
Bruce David Vernon
Dzierzynski Paul M.
Wisconsin Alumino Research Foundation
LandOfFree
Method for radiation therapy planning does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for radiation therapy planning, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for radiation therapy planning will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2146236