X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2007-10-16
2007-10-16
Ho, Allen C. (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S015000, C378S016000, C378S108000
Reexamination Certificate
active
11116196
ABSTRACT:
In a method and CT apparatus and software product for reconstructing incomplete projection data sets for dose-reduced sectional spiral scanning along a z axis of a patient on a table that is movable in the z direction in the CT apparatus that has a radiation source supplied with tube current so as to emit a beam that strikes a detector system to obtain scanning data from which in an image computing device generates two-dimensional and three-dimensional scanning images of the examination subject, at a pitch greater or equal to one. For z positions having an incomplete projection data set for reconstruction of the image, in a preprocessing step data from another row of this projection and/or data for a previous or subsequent 360° rotation are used to compute a complete projection data set therefor.
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Kalender Willi
Schaller Stefan
Schmidt Bernhard
Ho Allen C.
Schiff & Hardin LLP
Siemens Aktiengesellschaft
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