螺旋CT扫描 Spiral CT
螺旋CT扫描 Spiral CT
>螺旋扫描方式 单层 旅转一 周一幅 图象 i 多层 旋转一 周四幅© 图象
➢ 螺旋扫描方式 单层 旋转一 周一幅 图象 多层 旋转一 周四幅 图象
Spiral/Helical Scanning Simultaneous .Source rotation .Table translation .Data acquisition
(From G. Wang) Simultaneous •Source rotation •Table translation •Data acquisition Spiral/Helical Scanning
滑环和导电碳刷代替电缆
滑环和导电碳刷代替电缆
>滑环技术 Varian 高压滑环 低压滑环 高压发生器 高压发生器 球管 球管 120KV 120KV 热交换器
➢ 滑环技术 Varian
Slip ring scanning Power Projection supply data ImPACT Day:23rd July 2002-Basic Prindples of CT Scarning 33
Spiral CT Scanner Gantry 。 Data acquisition system 。Table ·Computer Parallel processors ·Control console ·Storage units Tapes,disks ·Recording device ·Network interface A-ray generato (From Elscint)
Spiral CT Scanner • Gantry Data acquisition system • Table • Computer Parallel processors • Control console • Storage units Tapes, disks • Recording device • Network interface X-ray generator (From Elscint) Heat exchanger
扫描方式 Developments in CT Technology 72 858687888990939495969798990001 HTor mains UKRC:2and May 2001
扫描方式
Spiral CT Scanner Gantry Network Source Computer Display Table Recording Parallel Control processor console Detectors Data acquisition system Storage units: Tapes,disks
Spiral CT Scanner Gantry Data acquisition system Detectors Storage units: Tapes, disks Display Control console Computer Parallel processor Table Recording Source Network
扫描方式 >球管的连续旋转+检查床的持续进动 >滑环技术 >高热容量球管 >快速处理计算机系统 >大容量硬盘
扫描方式 ➢ 球管的连续旋转+检查床的持续进动 ➢ 滑环技术 ➢ 高热容量球管 ➢ 快速处理计算机系统 ➢ 大容量硬盘