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Table of contents

Basic Principles of CT Scanning

Basic principles of CT scanning

Why CT?

Theory (1)

Construction of a CT scanner

In practice

Theory (2)

Data acquisition

What are we measuring?

Projections

Theory (3)

Back projection

Back Projection (2)

Filtered back projection

Filtered back projection (2)

Filtered back projection (3)

Filtered back projection (4)

Re-binning fan beam data

m to CT number

CT number flexibility

CT number window

CT number window (2)

CT image

Variations (1)

First generation CT scanner

Second generation CT scanner

Third generation CT scanner

Fourth generation CT scanners

Variations (2)

Detector type

Xenon detectors

Ceramic scintillators

Xenon vs. solid state

Variations (3)

Number of detectors and projections

Variations (4)

Gantry Rotation

Stop-start gantry

Slip rings

Slip rings (2)

Slip ring capabilities

Author: ImPACT

E-mail: impact@impactscan.org

Homepage: http://www.impactscan.org/

ImPACT course presentation index: http://www.impactscan.org/impactcourseslides.htm