Invention Grant
US08194821B2 Methods, systems, and computer-program products to correct degradation in tomographic images caused by extraneous radiation
有权
方法，系统和计算机程序产品，以纠正由外来辐射造成的断层图像的退化
- Patent Title: Methods, systems, and computer-program products to correct degradation in tomographic images caused by extraneous radiation
- Patent Title (中): 方法，系统和计算机程序产品，以纠正由外来辐射造成的断层图像的退化
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Application No.: US12239699Application Date: 2008-09-26
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Publication No.: US08194821B2Publication Date: 2012-06-05
- Inventor: Edward Seppi , Edward Shapiro , Gary Virshup , Josh Star-Lack
- Applicant: Edward Seppi , Edward Shapiro , Gary Virshup , Josh Star-Lack
- Applicant Address: US CA Palo Alto
- Assignee: Varian Medical Systems, Inc.
- Current Assignee: Varian Medical Systems, Inc.
- Current Assignee Address: US CA Palo Alto
- Agency: Kilpatrick Townsend & Stockton LLP
- Main IPC: G01N23/04
- IPC: G01N23/04
Abstract:
Disclosed are systems, methods, and computer program products that generate estimates of errors caused by extraneous radiation in tomographic systems, such as cone-beam computerized tomography (CBCT) systems, fluoroscopic tomography systems, radiographic tomography systems, laminar tomography imaging systems, and the like. In one group of inventions, spatial errors are estimated from projection data collected where a known spatial perturbation has been introduced into radiation intensity of the source. In another group of inventions, temporal errors are estimated from a sequence of projections where a known perturbation in the radiation intensity of the source for different projections has been introduced.
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