05727554 is referenced by 249 patents and cites 10 patents.

A camera generates digital image signals representing an image of one or more natural or artificial fiducials on a patient positioned on treatment or diagnosis equipment. A processor applies multiple levels of filtering at multiple levels of resolution to repetitively determine successive fiducial positions. A warning signal is generated if movement exceeds certain limits but is still acceptable for treatment. Unacceptable displacement results in termination of the treatment beam. Tracking templates can be generated interactively from a display of the digital image signals or through automatic selection of an image having the median correlation to an initial template. A gating signal synchronized to patient breathing can be extracted from the digital image signals for controlling the radiation beam generator.

Title
Apparatus responsive to movement of a patient during treatment/diagnosis
Application Number
8/715834
Publication Number
5727554
Application Date
September 19, 1996
Publication Date
March 17, 1998
Inventor
Takeo Kanade
Pittsburgh
PA, US
Charalambos N Athanassiou
Pittsburgh
PA, US
Karun B Shimoga
Pittsburgh
PA, US
Joel Greenberger
Sewickley
PA, US
Andre M Kalend
Monroeville
PA, US
Agent
Richard V Eckert Seamans Cherin & Mellott Westerhoff
Assignee
University of Pittsburgh of the Commonwealth System of Higher Education
PA, US
IPC
A61B 6/00
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