Title :
Experimental determination of CT point spread function
Author :
Doré, Sylvie ; Kearney, Robert E. ; de Guise, Jacques
Author_Institution :
McGill Univ., Montreal, Que., Canada
Abstract :
An approach is presented to the experimental identification of the noise power spectrum (NPS) of a computed tomography (CT) scanner, using a method based on the Weiner-Hopf equation. Simulations show that the identification process is very robust in the presence of noise but quite sensitive to subpixel misregistration. This situation can be easily corrected if the relative shift between input and output images can be quantified
Keywords :
computerised tomography; CT point spread function; Weiner-Hopf equation; computed tomography; identification process; input image; medical diagnostic imaging; noise power spectrum; output image; subpixel misregistration; Biological system modeling; Biomedical engineering; Computed tomography; Equations; Fabrication; Filters; Image reconstruction; Medical simulation; Sequences; Shape;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95902
