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High definition radiation treatment with an intensity modulating multi-leaf collimator

  • US 6,757,355 B1
  • Filed: 08/17/2000
  • Issued: 06/29/2004
  • Est. Priority Date: 08/17/2000
  • Status: Expired due to Term
First Claim
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1. A method for delivering radiation from a radiation source to a treatment area utilizing a multi-leaf collimator, comprising:

  • positioning the multi-leaf collimator between the radiation source and the treatment area to block a portion of the radiation, with leaves of the multi-leaf collimator extending longitudinally along a first axis and being positioned to define a first treatment field;

    delivering radiation to said first treatment field;

    rotating the multi-leaf collimator about a central axis extending generally perpendicular to a plane containing at least a portion of the leaves;

    positioning the leaves to define a second treatment field; and

    delivering radiation to said second treatment field;

    wherein positioning the leaves comprises intersecting a periphery edge of the target area at a transverse edge of each of the leaves at a predetermined location based on the number of treatment fields.

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