Title :
Optimization of filtered back-projection for a Rayleigh task
Author :
Sanchez, Adrian A. ; Sidky, Emil Y. ; Xiaochuan Pan
Author_Institution :
Dept. of Radiol., Univ. of Chicago, Chicago, IL, USA
fDate :
Oct. 27 2013-Nov. 2 2013
Abstract :
We consider the performance of the Hotelling Observer (HO) on a Rayleigh task in order to characterize the resolution properties of alternative implementations of the filtered back-projection (FBP) algorithm. Two alternative strategies, Hanning filtering in the reconstruction and Gaussian smoothing post-reconstruction, are considered. We find that use of the HO provides insight into the properties of these alternatives that would be lost through subjective image quality evaluation.
Keywords :
Gaussian processes; computerised tomography; filtering theory; image reconstruction; optimisation; FBP algorithm; Gaussian smoothing post-reconstruction; Hanning filtering; Rayleigh task; filtered back-projection algorithm; filtered back-projection optimization; hotelling observer; image quality evaluation; Computed tomography; Covariance matrices; Detectors; Image reconstruction; Image resolution; Observers; Smoothing methods;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4799-0533-1
DOI :
10.1109/NSSMIC.2013.6829354
