Introduction | p. 1 |
Some Words About the History of Computed Tomography | p. 7 |
References | p. 19 |
Technical Concepts of X-ray Computed Tomography Scanners | p. 21 |
Data Acquisition Systems | p. 22 |
First-Generation Scanners | p. 24 |
Second-Generation Scanners | p. 25 |
Third-Generation Scanners | p. 25 |
Fourth-Generation Scanners | p. 27 |
Spiral Scanners | p. 31 |
X-ray Sources | p. 32 |
The Physics of X-ray Sources | p. 33 |
X-ray Tubes | p. 37 |
Electrical Aspects of X-ray Tubes | p. 43 |
X-ray Detectors | p. 45 |
Detector Matrices | p. 48 |
Detector Parameters | p. 48 |
Imaging in Computed Tomography Devices | p. 52 |
Luminance of the Image | p. 52 |
Discretisation and Quantisation of the Image | p. 53 |
The Display of Reconstructed Images | p. 56 |
References | p. 60 |
The Physics of Data Acquisition | p. 63 |
X-ray Propagation Through Matters | p. 63 |
The Radon Transform | p. 68 |
X-ray Collimators | p. 72 |
Physical Causes of Artefacts in the Reconstructed Image | p. 73 |
Spectral Nonlinearities | p. 74 |
Beam-width Nonlinearities | p. 77 |
Scatter Nonlinearities | p. 78 |
Metal Artefacts | p. 79 |
Measurement Noise | p. 80 |
References | p. 81 |
Reconstruction from Parallel-beam Projections | p. 83 |
Geometry of the Parallel-beam Scanner | p. 83 |
Geometry of the Discrete Parallel-beam Scanner | p. 86 |
Image Reconstruction from Projections: Problem Formulation | p. 93 |
Reconstruction Methods by Convolution/Filtration and Back-Projection | p. 97 |
Choice of the Filter Forms | p. 101 |
Reconstruction Method by Convolution and Back-Projection | p. 110 |
Discrete Implementation of the Reconstruction Method by Convolution and Back-Projection | p. 113 |
Reconstruction Method by Filtration and Back-Projection | p. 117 |
Discrete Implementation of the Reconstruction Method by Filtration and Back-Projection | p. 121 |
References | p. 125 |
Reconstruction from Fan-beam Projections | p. 127 |
Geometry of the Fan-beam Scanner | p. 127 |
Geometry of the Discrete Projection System | p. 129 |
Reconstruction Method with Rebinning | p. 131 |
Discrete Implementation of the Reconstruction Method with Rebinning | p. 133 |
Direct Fan-beam Reconstruction Method | p. 135 |
Discrete Implementation of the Direct Fan-beam Reconstruction Method | p. 141 |
References | p. 147 |
Spiral Tomography | p. 149 |
Single Slice Computed Tomography-SSCT | p. 150 |
The Geometry of the Scanner | p. 151 |
The Geometry of the Discrete Scanner | p. 153 |
The 360° LI Reconstruction Algorithm | p. 155 |
Discrete Implementation of the 360° LI Reconstruction Method | p. 158 |
The 180° LI Reconstruction Algorithm | p. 160 |
Discrete Implementation of the 180° LI Reconstruction Method | p. 166 |
Multi-Slice Computed Tomography-MSCT | p. 170 |
The Geometry of the Scanner | p. 170 |
The Geometry of the Discrete Scanner | p. 173 |
The z-Filtering Reconstruction Algorithm | p. 176 |
Discrete Implementation of the z-filtering Reconstruction Method | p. 181 |
Cone-Beam Spiral Computed Tomography-CBCT | p. 185 |
The Geometry of the Cone-Beam Scanner | p. 187 |
The Geometry of the Discrete Cone-Beam Scanner | p. 190 |
The Feldkamp Algorithm | p. 192 |
Discrete Implementation of the Feldkamp Algorithm | p. 197 |
The Advanced Single-Slice Rebinning Algorithm-ASSR | p. 201 |
Discrete Implementation of the ASSR Algorithm | p. 224 |
References | p. 228 |
Algebraic Reconstruction Techniques | p. 233 |
Formulation of the Algebraic Problem of Image Reconstruction from Projections | p. 234 |
Algebraic Reconstruction Algorithms | p. 237 |
Basic ART Algorithm | p. 237 |
Practical Approach to the Basic ART Algorithm | p. 242 |
ART Algorithm with Relaxation | p. 244 |
Practical Approach to the ART Algorithm with Relaxation | p. 244 |
Chaotic ART Algorithm | p. 245 |
Practical Approach to the Chaotic ART Algorithm | p. 247 |
Iterative Coordinate Descent Algorithm | p. 248 |
The Geometry of the Projection System in 3D Space | p. 248 |
Formulation of the Reconstruction Problem in Terms of Probability | p. 253 |
Solving the Problem of Optimisation | p. 260 |
Practical Approach to the Iterative Coordinate Descent Algorithm | p. 262 |
References | p. 264 |
Evaluation of CT Devices | p. 267 |
Technical Parameters of CT Devices | p. 267 |
Phantoms | p. 270 |
ATS Phantom | p. 271 |
Moström's Phantom | p. 271 |
Low-contrast Resolution Phantom | p. 271 |
Spatial Resolution Phantom | p. 272 |
CT Linearity Phantom | p. 273 |
Slice Thickness Phantom | p. 274 |
Phantom Simulating a Skull Bone | p. 275 |
Phantom Sets | p. 276 |
Start-up and Test Procedures | p. 277 |
References | p. 278 |
Computer-Generated Projections for Simulations | p. 281 |
Mathematical Model for Parallel-beam Projections | p. 282 |
Mathematical Model for Fan-beam Projections | p. 287 |
Mathematical Model for Cone-beam Spiral Projections | p. 288 |
Introduction of Noise to the Projections | p. 294 |
References | p. 295 |
Functions and their Properties | p. 297 |
Sample Code for Selected Functions | p. 307 |
Index | p. 313 |
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