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Correction coefficient calculating method for X-ray CT systems, beam hardening post-processing method therefor, and X-ray CT system
Correction coefficient calculating method for X-ray CT systems, beam hardening post-processing method therefor, and X-ray CT system
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机译:X射线CT系统的校正系数计算方法,其束硬化后处理方法以及X射线CT系统
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摘要
An object of the present invention is to calculate a more accurate beam-hardening correction coefficient. A phantom having an oblong section or a phantom having an annular (sector) section and a uniform thickness is positioned in an X-ray CT system, and scanned from plural directions in order to acquire a plurality of views. The results of the scan are used to calculate a correction coefficient that is used to correct projection information to be acquired from a subject.
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