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Multileaf collimator and compensator for radiotherapy machines

  • US 4,868,843 A
  • Filed: 07/10/1987
  • Issued: 09/19/1989
  • Est. Priority Date: 09/10/1986
  • Status: Expired due to Term
First Claim
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1. An apparatus forming an accessory and improvement to medical electron accelerators generating an x-ray fan beam, comprising:

  • control means for providing dynamic control of radiation dose using a collimator in a treatment volume of arbitrary external and internal shape including dynamic control of radiation varying in intensity both in space and time independently within said arbitrary external shape while treatment of a subject progresses.

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