Computed Tomography: Principles, Design, Artifacts, and Recent AdvancesX-ray computed tomography (CT) has experienced tremendous growth in recent years, in terms of both basic technology and new clinical applications. This book provides an overview of the evolution of CT, the mathematical and physical aspects of the technology, and the fundamentals of image reconstruction using algorithms. It examines image display from traditional methods through the most recent advancements, and it discusses key performance indices, theories behind the measurement methodologies, and different measurement phantoms in image quality. General descriptions and different categories of artifacts, their causes, and their corrections are considered at length. |
Common terms and phrases
addition algorithm angle applications approach artifacts attenuation axis backprojection beam calculated cardiac changes channel Chapter clinical collected collimator cone contrast correction CT scanners defined described detection detector discussed distance dose effect electron energy error examine example fact fan beam Figure filtered focal spot formed Fourier transform frequency function gantry helical Illustration image artifacts impact increase intensity interpolation iso-center limited linear measured method mode motion multislice noise Note object obtained operation original parallel path patient performed phantom pitch plane position present produced projection radiation range reconstructed image reduced region represents resolution response result ring rotation samples scan scanner scattered selected shown in Fig shows signal simulation single slice thickness space spatial speed structures techniques tion tomography typical volume weighting width x-ray photons x-ray tube