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Background monitoring of CT data for existence and location of a bad detector
Background monitoring of CT data for existence and location of a bad detector
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机译:对CT数据进行后台监控以了解故障探测器的存在和位置
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摘要
A monitoring apparatus analyzes detector data from a CT system to detect a signature of a bad detector. The apparatus generates a plurality of Helgason-Ludwig condition values from the detector data. The generated values are processed to generate a comparison value, which is compared to a predetermined threshold value. A warning message may be generated when the comparison value exceeds the predetermined threshold value, the warning message alerting an operator to the likely presence of a bad detector. In one embodiment, the generated values are further analyzed to generate an estimate of the position of the bad detector. In a preferred embodiment, the comparison value is a matrix norm of a matrix generated from the Helgason-Ludwig condition values.
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