Invention Application
- Patent Title: METHOD AND APPARATUS FOR COMPUTED TOMOGRAPHY IMAGE RECONSTRUCTION
- Patent Title (中): 用于计算机图像重构的方法和装置
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Application No.: US13254001Application Date: 2010-02-18
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Publication No.: US20120014582A1Publication Date: 2012-01-19
- Inventor: Dirk Schaefer , Michael Grass
- Applicant: Dirk Schaefer , Michael Grass
- Applicant Address: NL Eindhoven
- Assignee: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- Current Assignee: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- Current Assignee Address: NL Eindhoven
- International Application: PCT/IB2010/050721 WO 20100218
- Main IPC: G06K9/00
- IPC: G06K9/00

Abstract:
A method and apparatus are provided to reconstruct projection data obtained from CT imaging devices with offset detector geometries. According to one aspect of the present invention, a method is provided to reconstruct projection data obtained from CT imaging devices with offset detector geometries that includes the following steps: (i) matching projection data measured at opposing sides of the acquisition trajectory and splicing them together to generate a full, non-truncated projection data set; (ii) differentiation of the projection data; (iii) filtering the differentiated projection data with a filter, such as for example a Hilbert filter; (iv) applying redundancy weighting to the filtered projection data; and (v) back-projecting the redundancy weighted projection data to generate image data.
Public/Granted literature
- US08787646B2 Method and apparatus for computed tomography image reconstruction Public/Granted day:2014-07-22
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