Variable feathering field splitting for intensity modulated...

X-ray or gamma ray systems or devices – Specific application – Absorption

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C378S152000

Reexamination Certificate

active

07573978

ABSTRACT:
A method and associated system300for delivering intensity-modulated radiation therapy (IMRT) uses variable feathering field splitting for intensity modulated fields of large size. A processor controls a beam-shaping device that splits the radiation beam into a plurality of radiation fields delivered to a patient. The processor in cooperation with the beam-shaping device implements a variable feathering method which includes providing an intensity matrix for the treatment of a patient, the intensity matrix having a plurality of rows and columns for spanning a prescribed radiation field including a prescribed field width. The prescribed width is compared to a maximum field width provided by the radiation treatment system. The intensity matrix is split into a plurality of spatially overlapping intensity submatrices by variably feathering the intensity matrix when the prescribed width exceeds the maximum field width, Radiotherapy is then provided to the patient using a leaf sequencing method to generate the submatrices.

REFERENCES:
patent: 7142635 (2006-11-01), Kamath et al.
patent: 0 673 661 (1995-09-01), None
patent: WO 2005/096788 (2005-10-01), None
Dogan, Nesrin, et al., “Automatic Feathering of Split Fields for Step-and-Shoot Intensity Modulated Radiation Therapy”, Physics in Medicine and Biology IOP Publishing, vol. 48, No. 9, pp. 1133-1140. 2003.
Hong, Linda, et al., “IMRT of Large Fields: Whole-Abdomen Irradiation”, International Journal of Radiation Oncology Biology Physics, vol. 54, No. 1, pp. 278-289. 2002.
Wu, Qiuwen, et al., “Dynamic Splitting of Large Intensity-Modulated Fields”, Physics in Medicine and Biology IOP Publishing, vol. 45, pp. 1731-1740. 2000.
Wu, Xiadong, “Efficient Algorithms for Intensity Map Splitting Problems in Radiation Therapy”, Computing and Combinatorics 11th Annual International Conference, Cocoon 2005 Proceedings.
Dogan, Nesrin, et al., “A Modified Method of Planning and Delivery for Dynamic Multileaf Collimator Intensity'Modulated Radiation Therapy”, International Journal of Radiation Oncology Biology Physics, , vol. 47, No. 1, pp. 241-245. 2000.
Kamath, Srijit, et al., “Optimal Field Splitting for Large Intensity-Modulated Fields”, Medical Physics AIP, Melville, NY, vol. 31, No. 12, pp. 3314-3323. 2004.
Convery, D.J., et al., “The Generation of Intensity-Modulated Fields for Conformal Radiotherapy by Dynamic Collimation”, Physics in Medicine and Biology, vol. 37, No. 6, pp. 1359-1374. 1992.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Variable feathering field splitting for intensity modulated... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Variable feathering field splitting for intensity modulated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable feathering field splitting for intensity modulated... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4057790

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.