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Determining a spatial distribution of material property values on the basis of a single-energy CT scan with the aid of an iterative optimization method
专利权人:
Siemens Healthcare GmbH
发明人:
Rainer Raupach
申请号:
US15609052
公开号:
US10424090B2
申请日:
2017.05.31
申请国别(地区):
US
年份:
2019
代理人:
摘要:
A method for determining a spatial distribution of a material property value in an examination region of an examination object is described. With an embodiment of the method, projection scan data is acquired which has been produced with the aid of a single-energy CT scan with a defined X-ray energy spectrum from the examination region of the examination object using a defined scan projection geometry. Furthermore, a target function is established which includes a spectral forward projection of the sought spatial distribution and the acquired projection data. Finally, a spatial distribution of a material property value is determined for which the target function assumes an extremal value. A material property distribution-determining device is also described. A computer tomography system is described, moreover.
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