The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2014
Filed:
May. 12, 2008
Paul J. Keall, Stanford, CA (US);
Amit Sawant, Los Altos, CA (US);
Peter Maxim, Palo Alto, CA (US);
Yelin Suh, Palo Alto, CA (US);
Lei Xing, Palo Alto, CA (US);
Billy W. Loo, Jr., Foster City, CA (US);
Byung Chul Cho, Palo Alto, CA (US);
Paul J. Keall, Stanford, CA (US);
Amit Sawant, Los Altos, CA (US);
Peter Maxim, Palo Alto, CA (US);
Yelin Suh, Palo Alto, CA (US);
Lei Xing, Palo Alto, CA (US);
Billy W. Loo, Jr., Foster City, CA (US);
Byung Chul Cho, Palo Alto, CA (US);
Stanford University, Palo Alto, CA (US);
Abstract
A method and system are disclosed for estimating internal position information of a target in real-time based on a single gantry-mounted x-ray imager and a respiratory signal. The x-ray imaging is done periodically to limit radiation dosage. Initial parameters for the estimation model are determined in a pre-treatment session using four dimensional computed tomography (4D CT) in combination with a respiratory signal acquired from the patient. The model parameters are updated during treatment based on the periodic x-ray image data and the respiratory signal.