Title :
Uniform CR bound: implementation issues and applications
Author :
Usman, M. ; Hero, A.O. ; Fessler, J.A.
Author_Institution :
Michigan Univ., MI, USA
fDate :
30 Oct-5 Nov 1994
Abstract :
The authors apply a uniform Cramer-Rao (CR) bound (A.O. Hero, 1992) to study the bias-variance trade-offs in single photon emission computed tomography (SPECT) image reconstruction. The uniform CR bound is used to specify achievable and unachievable regions in the bias-variance trade-off plane. The image reconstruction algorithms considered here are: 1) space alternating generalized EM and 2) penalized weighted least-squares
Keywords :
image reconstruction; medical image processing; single photon emission computed tomography; SPECT image reconstruction; bias-variance trade-offs; diagnostic nuclear medicine; medical diagnostic imaging; penalized weighted least-squares; space alternating generalized expectation maximization; uniform Cramer-Rao bound; Chromium; Computed tomography; Fluctuations; Government; Image processing; Image reconstruction; Maximum likelihood estimation; Parameter estimation; Single photon emission computed tomography; US Department of Energy;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record
Conference_Location :
Norfolk, VA
Print_ISBN :
0-7803-2544-3
DOI :
10.1109/NSSMIC.1994.474584
