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pro vyhledávání: '"M.V. Narayanan"'
Akademický článek
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Publikováno v:
IEEE Transactions on Nuclear Science. 53:2769-2777
In this paper, we propose a method for spatio-temporal reconstruction of dynamic image sequences. In a method we proposed previously, temporal smoothing in a Karhunen-Loegraveve (KL) or principal components (PC) transform domain was used prior to rec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee16991e5ba09020390f79d69e1ab26a
https://doi.org/10.1109/tns.2006.882738
https://doi.org/10.1109/tns.2006.882738
Publikováno v:
IEEE Transactions on Nuclear Science. 50:1569-1574
The objective of this study was to determine the impact on detection accuracy of coronary artery disease (CAD) from different combinations of compensation for attenuation, scatter, and resolution using unified normal databases with polar-map quantita
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65e59e5ff2c0aa1ae37a034b23c3cb4b
https://doi.org/10.1109/tns.2003.817401
https://doi.org/10.1109/tns.2003.817401
Autor:
Seth T. Dahlberg, Michael A. King, J. Krasnow, Jeffrey A. Leppo, Naomi F. Botkin, P.H. Pretorius, M.V. Narayanan, Eric C. Frey, W. Berndt
Publikováno v:
IEEE Transactions on Nuclear Science. 50:1522-1527
Human-observer receiver-operating characteristic (ROC) results with clinical patient studies indicate that ordered-subset expectation-maximization (OSEM) reconstructions with a combination of corrections for attenuation, scatter, and distance-depende
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3755776832e1498091bacb1f7b189565
https://doi.org/10.1109/tns.2003.817399
https://doi.org/10.1109/tns.2003.817399
Publikováno v:
IEEE Transactions on Nuclear Science. 49:2304-2308
The objective of this project was to study the impact of local variations in myocardial thickness on SPECT perfusion imaging using segmented high-resolution gated-CT data of the heart to define source distributions. High-resolution breath-hold gated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edf74541a0b1e702a466102c71bed947
https://doi.org/10.1109/tns.2002.803809
https://doi.org/10.1109/tns.2002.803809
Autor:
P.H. Pretorius, Miles N. Wernick, P.P. Bruyant, Howard C. Gifford, Troy Farncombe, M.V. Narayanan, Michael A. King
Publikováno v:
IEEE Transactions on Nuclear Science. 49:2355-2360
In this paper, we investigate the use of a numerical observer to optimize ordered-subset expectation maximization (OSEM) reconstructions for the detection of coronary artery disease (CAD). The parameters optimized were the iteration number and the fu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19cfacf4e710c3f54c5b8ef07ad667b2
https://doi.org/10.1109/tns.2002.803805
https://doi.org/10.1109/tns.2002.803805
Publikováno v:
2001 IEEE Nuclear Science Symposium Conference Record (Cat. No.01CH37310).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ac6277047bf1cea3e9263b4132c2cf5
https://doi.org/10.1109/nssmic.2001.1008629
https://doi.org/10.1109/nssmic.2001.1008629
Publikováno v:
2002 IEEE Nuclear Science Symposium Conference Record.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4852a077479110b758eb947d08ef46f3
https://doi.org/10.1109/nssmic.2002.1239579
https://doi.org/10.1109/nssmic.2002.1239579
Publikováno v:
2002 IEEE Nuclear Science Symposium Conference Record.
In this paper ire present two 4D motion-compensated reconstruction algorithms for gated cardiac SPECT. The algorithms are based on a deformable content-adaptive mesh model, a compact image representation that is well suited for motion tracking of non
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dfb99a66a9d100b756117de9ca089ff
https://doi.org/10.1109/nssmic.2002.1239578
https://doi.org/10.1109/nssmic.2002.1239578
Publikováno v:
1999 IEEE Nuclear Science Symposium. Conference Record. 1999 Nuclear Science Symposium and Medical Imaging Conference (Cat. No.99CH37019).
With three-headed SPECT systems, two heads can aquire truncation-free emission images with parallel-beam (PB) collimators, while the third head acquires transmission images through a fan-beam (FB) collimator. The FB collimator can also be used for em
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fb80205b1dd334768335dd212ecf337
https://doi.org/10.1109/nssmic.1999.842762
https://doi.org/10.1109/nssmic.1999.842762