Method for producing tomographic pictures with the aid of an...

Details Method for producing tomographic pictures with the aid of an... Method for producing tomographic pictures with the aid of an...

2008-02-15

2009-12-22

Yun, Jurie (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S009000

Reexamination Certificate

active

07636415

ABSTRACT:
A method and an X-ray CT system are disclosed for producing tomographic pictures with the aid of an X-ray CT system including at least two X-ray sources arranged on a gantry with an angular offset to scan an examination object. In at least one embodiment of the method, in order to determine the scattered radiation distribution, pre-scanning is carried out in which the X-ray sources rotate about the examination object and the dose rate is modulated as a function of the rotation angle, no radiation dose is output over the majority of the revolution, at specific pre-scan angles a dose rate is produced briefly and individually in each case by the X-ray sources of the focus/detector systems, and the received scattered radiation is measured simultaneously by the detectors of the at least one other focus/detector system.

REFERENCES:
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patent: 6876719 (2005-04-01), Ozaki
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patent: 2004/0228442 (2004-11-01), Sakaguchi
patent: 2007/0086561 (2007-04-01), Bruder et al.
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patent: 1405598 (2004-04-01), None
2002E18315DE, filed May 6, 2003, Bruder, Herbert, German Office Action, Oct. 8, 2007.

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