Method and apparatus for using a multi-layer multi-leaf collimator as a virtual flattening filter

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United States of America Patent

PATENT NO 12076589
APP PUB NO 20230241415A1
SERIAL NO

18133732

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Abstract

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A photon source emits a flattening filter-free photon beam. A control circuit operably couples to a multi-layer multi-leaf collimator that is disposed between the photon source and a treatment area of a patient. The control circuit automatically arranges operation of some, but not all, of the layers of the multi-layer multi-leaf collimator to serve as a virtual flattening filter with respect to the flattening filter-free photon beam emitted by the photon source. By one approach, another of the layers of the multi-layer multi-leaf collimator serves to form a treatment aperture corresponding to a shape of the treatment area of the patient. By one approach the control circuit comprises an integral part of a treatment platform (as versus a dedicated treatment planning platform) and can carry out most or even essentially all of the planning steps that lead to administration of the treatment to a patient.

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Patent Owner(s)

Patent OwnerAddress
VARIAN MEDICAL SYSTEMS INC3100 HANSEN WAY PALO ALTO CA 94304

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hannibal, Ross B Saratoga, US 8 208
Lee, Mu Young San Jose, US 7 99
Miettinen, Mika San Francisco, US 3 9

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