Fast Methods for Approximation of Resolution and Covariance for SPECT
dc.contributor.author | Stayman, J. Webster | en_US |
dc.contributor.author | Fessler, Jeffrey A. | en_US |
dc.date.accessioned | 2011-08-18T18:21:21Z | |
dc.date.available | 2011-08-18T18:21:21Z | |
dc.date.issued | 2002-11-10 | en_US |
dc.identifier.citation | Stayman, J.W.; Fessler, J.A. (2002). "Fast Methods for Approximation of Resolution and Covariance for SPECT." IEEE Nuclear Science Symposium Conference Record 2: 786-788. <http://hdl.handle.net/2027.42/86005> | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/86005 | |
dc.description.abstract | Resolution and covariance predictors have been derived previously for penalized-likelihood estimators. These predictors can provide accurate approximations to the local resolution properties and covariance functions for tomographic systems given a good estimate of the mean measurements. However, when numerous evaluations are made repeatedly (as in penalty design or calculation of variance images), these predictors still require large amounts of computing time. In, we discussed methods for precomputing a large portion of the predictor for shift-invariant system geometries. In this paper, we generalize the efficient procedure discussed in to shift-variant single photon emission computed tomography (SPECT) systems. This generalization relies on a new attenuation approximation and several observations on the symmetries in SPECT systems. These new general procedures apply to both 2D and fully-3D SPECT models, that may be either precomputed and stored, or written in procedural form. | en_US |
dc.publisher | IEEE | en_US |
dc.title | Fast Methods for Approximation of Resolution and Covariance for SPECT | en_US |
dc.type | article | en_US |
dc.subject.hlbsecondlevel | Biomedical Engineering | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | EECS | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/86005/1/Fessler180.pdf | |
dc.identifier.doi | 10.1109/NSSMIC.2002.1239440 | en_US |
dc.identifier.source | IEEE Nuclear Science Symposium Conference Record | en_US |
dc.owningcollname | Electrical Engineering and Computer Science, Department of (EECS) |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.