Title :
X-ray computed tomography for medical imaging
Author :
Hiriyannaiah, H.P.
Author_Institution :
InfoGrain Inc., Cupertino, CA
fDate :
3/1/1997 12:00:00 AM
Abstract :
The article looks at reconstruction in 2-D and 3-D tomography. We have not dealt with some of the issues in reconstruction such as sampling and aliasing artifacts, finite detector aperture artifacts, beam hardening artifacts, etc., in greater detail since these are beyond the scope of an introductory tutorial. We examine the physical and mathematical concepts of the Radon (1917) transform, and the basic parallel beam reconstruction algorithms are discussed. We also develop the algorithms for fan-beam CT, and discuss the mathematical principles of cone-beam CT
Keywords :
Radon transforms; computerised tomography; image reconstruction; image sampling; medical image processing; 2D tomography; 3D tomography; Radon transform; X-ray computed tomography; aliasing artifacts; beam hardening artifacts; cone-beam CT; fan-beam CT; finite detector aperture artifacts; image reconstruction; mathematical principles; medical imaging; parallel beam reconstruction algorithms; sampling; tutorial; Attenuation; Biomedical imaging; Computed tomography; Detectors; Differential equations; Electromagnetic scattering; Electromagnetic wave absorption; Particle scattering; X-ray imaging; X-ray scattering;
Journal_Title :
Signal Processing Magazine, IEEE
