Residual map segmentation method for multi-leaf...

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

Reexamination Certificate

active

06853705

ABSTRACT:
In a method for sequentially generating segment fields for use in delivering intensity modulated radiotherapy an input continuous intensity map is generated. A segment field is generated directly from the input intensity map. A residual continuous intensity map is generated that is based on the respective photon fluence contributions from the input intensity map and a fractionally intensity map corresponding to the segment field. These steps are repeated for a number of iterations to generate a like number of additional segment fields and residual maps derived therefrom. In each iteration, the residual map generated in the previous iteration is used as the input intensity map.

REFERENCES:
patent: 4726046 (1988-02-01), Nunan
patent: 4868843 (1989-09-01), Nunan
patent: 4868844 (1989-09-01), Nunan
patent: 4987309 (1991-01-01), Klasen et al.
patent: 5166531 (1992-11-01), Huntzinger
patent: 5663999 (1997-09-01), Siochi
patent: 5724403 (1998-03-01), Siochi et al.
patent: 5818902 (1998-10-01), Yu
patent: 5889834 (1999-03-01), Vilsmeier et al.
patent: 6049587 (2000-04-01), Leksell et al.
patent: 6052430 (2000-04-01), Siochi et al.
patent: 6097787 (2000-08-01), Siochi
patent: 6108400 (2000-08-01), Siochi
patent: 6128366 (2000-10-01), Siochi
patent: 6134296 (2000-10-01), Siochi
patent: 6142925 (2000-11-01), Siochi et al.
patent: 6167114 (2000-12-01), Siochi
patent: 6240161 (2001-05-01), Siochi
patent: 6240162 (2001-05-01), Hernandez-Guerra et al.
patent: 6314159 (2001-11-01), Siochi
patent: 6330300 (2001-12-01), Siochi
patent: 6335961 (2002-01-01), Wofford et al.
patent: 6349129 (2002-02-01), Siochi
patent: 6353655 (2002-03-01), Siochi
patent: 6388816 (2002-05-01), Brown et al.
patent: 6449335 (2002-09-01), Siochi
patent: 6473490 (2002-10-01), Siochi
patent: 6477229 (2002-11-01), Grosser
patent: 6661871 (2003-12-01), Siochi
patent: 6687330 (2004-02-01), Hernandez-Guerra
patent: 6757355 (2004-06-01), Siochi
patent: 20030086530 (2003-05-01), Otto
Chang et al., “Dose optimization via index-dose gradient minimization”, Med. Phys. 29 (6), Am. Assoc. Phys. Med., p. 1130-1146 (Jun. 2002).
Potter et al., “A quality and efficiency analysis of the IMFAST™ segmentation algorithm in head and neck ‘step & shoot’ IMRT treatments”, Med. Phys. 29 (3), Am. Assoc. Phys. Med., p. 275-283 (Mar. 2002).
Siochi, “Virtual micro-intensity modulated radiation therapy”, Med. Phys. 27 (11), Am. Assoc, Phys. Med., p. 2480-2493 (Nov. 2000).
Chang et al., “Intensity modulation delivery techniques: “Step & shoot” MLC auto-sequence versus the use of a modulator”, Med. Phys. 27 (5), Am Assoc. Phys. Med., p. 948-959, (May 2000).
Que, “Comparison of algorithms for multileaf collimator field segmentation”, Med. Phys. 26 (11), Am. Assoc. Phys. Med., p. 2390-2396 (Nov. 1999).
Chang et al., “A Comparison of Different Intensity Modulation Treatment Techniques for Tangential Breast Irradiation”, Int. J. Radiation Oncology Biol. Phys., vol. 45, No. 5, p. 1305-1314 (1999).
Siochi, “Minimizing Static Intensity Modulation Delivery Time Using an Intensity Solid Paradigm”, Int. J. Radiation Oncology Biol. Phys., vol. 43, No. 3, p. 671-680, (1999).
Xia et al., “Multileaf collimator leaf sequencing algorithm for intensity modulated beams with multiple static segments”, Med. Phys. 25 (8), Am. Assoc, Phys. Med., p. 1424-1434 (Aug. 1998).
Webb, “Configuration options for intensity-modulated radiation therapy using multiple static fields shaped by a multileaf collimator. II: Constraints and limitations on 2D modulation”, Phys. Med. Biol. 43, p. 1481-1495 (1998).
Bortfield et al., “X-Ray Field Compensation with Multileaf Collimators”, Int. J. Radiation Oncology Biol. Phys., vol. 28, No. 3, p. 723-730 (1994).
Galvin et al., “Combining Multileaf Fields to Modulate Fluence Distributions”, Int. J. Radiation Oncology Biol. Phys., vol. 27, p. 697-705 (1993).

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

Residual map segmentation method for multi-leaf... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Residual map segmentation method for multi-leaf..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Residual map segmentation method for multi-leaf... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3449477

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