Computed Tomography Principles
Learning Objectives
A Little Bit History
X-ray Interactions - Photoelectric Effect
X-ray Interactions - Compton Scatter
Source and Detectors
Exponential Attenuation of X-ray
Ray-Sum of X-ray Attenuation
Projection & Sinogram
Completeness Condition
First Generation
Second Generation
Third Generation
Fourth Generation
Third & Fourth Generations
Spiral/Helical Scanning
Cone-Beam Geometry
Scanning modes
Spiral CT Scanner
Data Acquisition System (DAS)
E-Beam CT Scanner
Computed Tomography
Reconstruction Idea
Algebraic Reconstruction Technique (ART)
Fourier Transformation
Fourier Slice Theorem
From Projections to Image
Filtered Backprojection
Example: Projection
Example: Backprojection
Example: Filtering
Example: Filtered Backprojection
References
Home Page: http://dolphin.radiology.uiowa.edu/ge
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