Invention Grant
US09263164B2 Method and device for correcting artefacts during X-ray imagery, especially computer tomography, with a moving modulator field
有权
用于在X射线图像（尤其是计算机断层摄影）中用移动调制器场校正伪影的方法和装置
- Patent Title: Method and device for correcting artefacts during X-ray imagery, especially computer tomography, with a moving modulator field
- Patent Title (中): 用于在X射线图像（尤其是计算机断层摄影）中用移动调制器场校正伪影的方法和装置
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Application No.: US14009189Application Date: 2012-03-23
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Publication No.: US09263164B2Publication Date: 2016-02-16
- Inventor: Matthias Goldammer , Karsten Schörner
- Applicant: Matthias Goldammer , Karsten Schörner
- Applicant Address: DE Munich
- Assignee: SIEMENS AKTIENGESELLSCHAFT
- Current Assignee: SIEMENS AKTIENGESELLSCHAFT
- Current Assignee Address: DE Munich
- Agency: Staas & Halsey LLP
- Priority: DE102011006660 20110401
- International Application: PCT/EP2012/055203 WO 20120323
- International Announcement: WO2012/130755 WO 20121004
- Main IPC: G21K1/10
- IPC: G21K1/10 ; A61B6/00 ; G01N23/04 ; G06T11/00 ; G06T5/00 ; G06T5/50 ; A61B6/03
Abstract:
A method and a device produce X-ray images of objects, according to which artifacts caused by scattered radiation are corrected. To this end, a modulator field is used, that can be moved from a first position to a second position, thereby enabling modulator field areas with small and relatively large X-ray attenuation coefficients to be interchanged. An initial amplitude-modulated projection of the object is respectively produced in each of the two positions, and a scattered image associated with the projection is respectively calculated. This is especially suitable for rapid CT scans.
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