>等宽型 均等分布 组合灵活，维修简单 >非等宽型 非均等分布 探测器数目少，可减低剂量
➢ 等宽型 均等分布 组合灵活，维修简单 ➢ 非等宽型 非均等分布 探测器数目少，可减低剂量
Data Acquisition System(DAS) Pre- Post- Collimator Collimator Scatterin Source Detector Filter Patien t
Filter Data Acquisition System (DAS) Source Detector PreCollimator PostCollimator Patien t Scatterin g (From G. Wang)
Data Acquisition System (DAS) X-ray Tube Source Filter Detectors CT Gantry OIIIIIIIllIIW (From Siemens) Detector
Data Acquisition System (DAS) X-ray Tube Detectors CT Gantry (From Siemens) Filter Source Detector(From G. Wang)
In practice TUBE APERTURE DETECTORS ImPACT Day:23rd July 2002-Basic Principles of CT Scanring 6