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1. (US20080240348) Variable feathering field splitting for intensity modulated fields of large size

Office : United States of America
Application Number: 11995303 Application Date: 11.07.2006
Publication Number: 20080240348 Publication Date: 02.10.2008
Grant Number: 7573978 Grant Date: 11.08.2009
Publication Kind : B2
Prior PCT appl.: Application Number:US06026891 ; Publication Number: Click to see the data
IPC:
A61N 5/10
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
N
ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
5
Radiation therapy
10
X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
Applicants: University of Florida Research Foundation, Inc.
Inventors: Kamath Srijit
Sahni Sartaj Kumar
Li Jonathan
Palta Jatinder
Ranka Sanjay
Agents: Saliwanchik Lloyd &; Saliwanchik
Priority Data:
Title: (EN) Variable feathering field splitting for intensity modulated fields of large size
Abstract: front page image
(EN)

A method and associated system 300 for 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.


Also published as:
WO/2007/008899