X-ray CT system and method for creating tomographic recordings with two x-ray energy spectra
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United States of America Patent
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Mar 12, 2013
Grant Date -
Apr 15, 2010
app pub date -
Oct 8, 2009
filing date -
Oct 9, 2008
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Abstract
An x-ray CT system and a method are disclosed for creating tomographic recordings with the aid of an x-ray CT system, with two emitter/detector arrangements operating with an angular offset on a gantry with at least two different x-ray energy spectra. In at least one embodiment, at least one first recording is reconstructed from detector data from two quarter rotations with different x-ray energy spectra and at least one second recording is created from detector data of a scan of at least one of the emitter/detector arrangements over a half rotation. According to at least one embodiment of the invention, the recordings are subjected to high-pass filtering or low-pass filtering in respect of their spatial frequencies and then the filtered recordings are combined to give a resulting recording.
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