Image-based aperture verification system for multi-leaf collimator

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United States of America Patent

PATENT NO 9950193
SERIAL NO

15008232

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Abstract

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A radiation delivery system includes a multi-leaf collimator (MLC) that includes a housing, a plurality of leaves disposed within the housing, and an image sensor disposed within the housing at a position that is offset from a beam axis. The plurality of leaves are movable to define an aperture for the MLC, and the image sensor is directed toward the plurality of leaves. The image sensor is to generate an oblique-view image of the aperture. The radiation delivery system additionally includes a processing device to receive the oblique-view image, transform the oblique-view image into a top-view image having a reference coordinate space, and determine whether the aperture for the MLC corresponds to a specified aperture based on the top-view image.

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Patent Owner(s)

Patent OwnerAddress
MIDCAP FUNDING IV TRUST AS SUCCESSOR TO EXISTING ADMINISTRATIVE AGENT7255 WOODMONT AVENUE SUITE 200 C/O MIDCAP FINANCIAL SERVICES LLC AS SERVICER BETHESDA MD 20814

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chappelow, Jonathan Cecil Campbell, US 6 99
Fitting, Andrew W Fremont, US 3 39
Gao, Jian San Jose, US 749 2595
Jordan, Petr Redwood City, US 52 1294
Maurer, Calvin San Jose, US 15 170
Myronenko, Andriy San Mateo, US 35 1074
Singh, Sarbjit San Jose, US 11 75

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