发明授权
- 专利标题: Apparatus and method for volumetric reconstruction of a cyclically moving object
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申请号: US10033952申请日: 2001-12-28
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公开(公告)号: US07054475B2公开(公告)日: 2006-05-30
- 发明人: Peter Michael Edic , Maria Iatrou
- 申请人: Peter Michael Edic , Maria Iatrou
- 申请人地址: US NY Niskayuna
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: US NY Niskayuna
- 代理机构: Fletcher Yoder
- 主分类号: G06K9/00
- IPC分类号: G06K9/00
摘要:
A method for volumetric reconstruction of a cyclically moving object using a computed tomography (CT) system includes scanning a cyclically moving object with a CT imaging system including at least one of an area detector and a linear detector to encompass the desired field of view and a rotating gantry to measure projection data during a plurality of cycles of the cyclically moving object. The method also includes dividing a period of the cyclically moving object into a discrete number of phases, identifying an initial set of projection data at a desired phase of a first cycle at a first angle, identifying at least one subsequent set of projection data at the same desired phase of a subsequent cycle at an angle that is different from the first angle, and combining the initial set of projection data with each subsequent set of identified projection data and using a reconstruction algorithm to generate a three-dimensional image. The method further includes repeating the steps of identifying an initial set of projection data at a desired phase of a first cycle at a first angle, identifying at least one subsequent set of projection data at the same desired phase of a subsequent cycle at an angle that is different from the first angle, and combining the initial set of projection data with each subsequent set of identified projection data and using a reconstruction algorithm to generate a collection of three-dimensional images for the desired phases; and temporally filtering the collection of three-dimensional images on a pixel by pixel basis.
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