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:
Nov. 16, 2021
Filed:
Apr. 13, 2018
Varian Medical Systems, Inc., Palo Alto, CA (US);
Varian Medical Systems International Ag, Steinhausen, CH;
Pascal Paysan, Basel, CH;
Marcus Brehm, Zürich, CH;
Adam Wang, Palo Alto, CA (US);
Dieter Seghers, Zürich, CH;
Josh Star-Lack, Palo Alto, CA (US);
VARIAN MEDICAL SYSTEMS, INC., Palo Alto, CA (US);
Abstract
Reconstruction of projection images of a CBCT scan is performed by generating simulated projection data, comparing the simulated projection data to the projection images of the CBCT scan, determining a residual volume based on the comparison, and using the residual volume to determine an accurate reconstructed volume. The reconstructed volume can be used to segment a tumor (and potentially one or more organs) and align the tumor to a planning volume (e.g., from a CT scan) to identify changes, such as shape of the tumor and proximity of the tumor to an organ. These changes can be used to update a radiation therapy procedure, such as by altering a radiation treatment plan and fine-tuning a patient position.