Abstract
Although the tomographic reconstruction technique assumes that the projections correspond to sets of line integrals, the measurements are, in fact, made with beams having a finite width and height. This has important implications for the design of tomography systems. Artifacts may be generated by variations in the beam profile across the slice [1]. Furthermore, the spatial resolution that can be achieved with a given beam geometry is limited to the full-width at half-maximum (FWHM) of the beam profile [1]. (Image restoration can improve spatial resolution but only at the expense of contrast discrimination [2].) Therefore, a detailed knowledge of the spatial response associated with various beam geometries is essential for the design of tomography scanners.
© 1984 Optical Society of America
PDF ArticleMore Like This
C.J. Allan
MA2 Industrial Applications of Computed tomography and NMR Imaging (IACT) 1984
Shunichi Sato, Susumu Kikuchi, Hiromasa Ito, Humio Inaba, Yoshio Taguchi, and Morio Kasai
THI9 Conference on Lasers and Electro-Optics (CLEO:S&I) 1984
Fredrick H. Seguin, Paul Burstein, Paul J. Bjorkholm, F. Homburger, and Richard A. Adams
MC5 Industrial Applications of Computed tomography and NMR Imaging (IACT) 1984