Invention Grant
- Patent Title: Method for scattered radiation correction in x-ray imaging devices
- Patent Title (中): x射线成像装置散射辐射校正方法
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Application No.: US12076040Application Date: 2008-03-13
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Publication No.: US07835485B2Publication Date: 2010-11-16
- Inventor: Herbert Bruder , Martin Petersilka , Karl Stierstorfer
- Applicant: Herbert Bruder , Martin Petersilka , Karl Stierstorfer
- Applicant Address: DE Munich
- Assignee: Siemens Aktiengesellschaft
- Current Assignee: Siemens Aktiengesellschaft
- Current Assignee Address: DE Munich
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: DE102007014829U 20070328
- Main IPC: A61B6/00
- IPC: A61B6/00

Abstract:
A method is disclosed for scattered radiation correction in x-ray imaging devices having a number of x-ray sources that can be moved around an examination object in at least one scanning plane during a measurement pass. During the measurement pass, a number of x-ray projections are recorded at different projection angles with simultaneous use of the x-ray sources. In at least one embodiment of the present method, parameters characterizing an outer object contour are determined in the scanning plane from measured data of different x-ray projections. In at least one embodiment, on the basis of one object contour section whose characterizing parameters have been determined from x-ray projections that lie in front of and/or behind the respective x-ray projection by a defined projection angle range, for each x-ray projection an assigned scattered radiation distribution is then retrieved or is interpolated in a database from scattered radiation distributions for object contour sections with similar characterizing parameters. This scattered radiation distribution is then used for the correction of the measured data for the respective x-ray projection. In at least one embodiment, the method enables scattered radiation correction in conjunction with operation of the x-ray sources.
Public/Granted literature
- US20080240340A1 Method for scattered radiation correction in x-ray imaging devices Public/Granted day:2008-10-02
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