【摘 要】
：
环状伪影为第四代(旋转扫描)ＣＴ的常见故障,一般为数据发生系统、数据获得系统和数据处理系统故障所致。判断环状伪影的故障范围,除常规的软件检测分析外,有一种直接有效的方法,
【机 构】
：
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环状伪影为第四代(旋转扫描)ＣＴ的常见故障,一般为数据发生系统、数据获得系统和数据处理系统故障所致。判断环状伪影的故障范围,除常规的软件检测分析外,有一种直接有效的方法,现列成下表:故障范围检测方式常规扫描图像Ｓｃｏｕｔ图像ｒｏｗＤＡＴＡ重建图像数据发生系?..
Ring artifacts are common faults of the fourth generation (rotary scan) CTs, which are typically caused by failures in the data generation system, data acquisition system, and data processing system. To determine the fault scope of ring artifacts, in addition to the conventional software detection analysis, there is a direct and effective method, which is now listed in the following table: Fault range detection method Conventional scan image Scout image rowDATA reconstruction image data generation system?
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