Spiral/multi-slice CT: physics and dosimetry
Aims
Spiral CT
Helical pitch
Multi-slice CT scanner design
Dual slice capabilities
Four slice scanners
Detector switching for slice width selection
Sixteen slice scanners
Sixteen slice detector arrays
More than 16 slicesā?
32/40/64 slice scanners
32/40/64 slice scanners 2
Helical scanning and reconstruction
Single and multi-slice helical scanning
Cone beam and artefacts
16+ slice reconstruction
16+ slice reconstruction 2
Other scanner design considerations
Benefits of multi-slice
Benefits of multi-slice: isotropic imaging
Radiation dose
Z-axis over-beaming
Extra helical rotations
CT automatic exposure control (AEC)
CT AEC
Future of multi-slice
Future of multi-slice 2
Other CT applications
Other CT applications 2
Data explosion!
Conclusions
Thank you for your attention!
Author: Nick Keat
E-mail: nick@impactscan.org
Homepage: http://www.impactscan.org/