X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2008-05-19
2010-12-21
Glick, Edward J (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S004000, C378S009000
Reexamination Certificate
active
07856078
ABSTRACT:
A method is disclosed for generating computed tomography displays, in which with the aid of at least one X-ray source, an examination object is scanned in a rotationally circulating fashion with a measured dose rate dependent on the circulation angle, projection data are collected from a multiplicity of viewing angles, and at least similarly redundant projection data from angularly identical or angularly complementary projection angles with a different measured dose are interpolated with distance weighted relative to a projection value and are used for reconstruction. According to at least one embodiment of the invention, during the distance weighted interpolation of the at least similarly redundant projection data an additional noise optimizing weighting is carried out as a function of the noise present per projection value. Furthermore, an X-ray computed tomography system is disclosed for generating tomographic displays of an examination object with the aid of an arithmetic logic unit, including computer program code for evaluating detector data and carrying out a reconstruction, the arithmetic logic unit including program code that during operation executes at least one embodiment of the method.
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Bruder Herbert
Raupach Rainer
Schmidt Bernhard
Glick Edward J
Harness & Dickey & Pierce P.L.C.
Siemens Aktiengesellschaft
Taningco Alexander H
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