"[F704AA2527BE]" . . "RIV/67985556:_____/04:00106412!RIV/2005/AV0/A16005/N" . "Proceedings of the Irish Signals and Systems Conference" . "1"^^ . . "3"^^ . "Pln\u011B pravd\u011Bpodobnostn\u00ED model pro funk\u010Dn\u00ED anal\u00FDzu medic\u00EDnsk\u00FDch obrazov\u00FDch dat"@cs . . . "Fully probabilistic model for functional analysis of medical image data" . "Pln\u011B pravd\u011Bpodobnostn\u00ED model pro funk\u010Dn\u00ED anal\u00FDzu medic\u00EDnsk\u00FDch obrazov\u00FDch dat"@cs . "RIV/67985556:_____/04:00106412" . "Physiological factor images and associated time activity curves are inferred in functional medical imaging, using Bayesian techniques. Specifically, the Variational Bayes (VB) framework is employed, leading to an iterative scheme of the Expectation-Maximization (EM) kind. Positivity constraints are imposed to reflect the physiological nature of the problem. Accelerated convergence is achieved by initializing the VB recursions with appropriately rotated principal components." . . "Physiological factor images and associated time activity curves are inferred in functional medical imaging, using Bayesian techniques. Specifically, the Variational Bayes (VB) framework is employed, leading to an iterative scheme of the Expectation-Maximization (EM) kind. Positivity constraints are imposed to reflect the physiological nature of the problem. Accelerated convergence is achieved by initializing the VB recursions with appropriately rotated principal components."@en . "Fully probabilistic model for functional analysis of medical image data"@en . . "564990" . . "\u0160m\u00EDdl, V\u00E1clav" . . "University of Belfast" . . "201;206" . "Maniouloux, Y." . "factor analysis;functional medical imaging;Variational Bayes (VB)"@en . . "Fzyiologick\u00E9 faktorov\u00E9 obrazy a s nimi spojen\u00E9 \u010Dasov\u00E9 pr\u016Fb\u011Bhy zobrazovan\u00E9 aktivity zna\u010Dkuj\u00EDc\u00EDho radionuklidu jsou odhadov\u00E1ny pomoc\u00ED bazesovsk\u00FDch technik. Konkr\u00E9tn\u011B, je pou\u017Eit tzv. varia\u010Dn\u00ED bayesovsk\u00FD algoritmus, vedouc\u00ED k itera\u010Dn\u00EDmu postupu bl\u00EDzk\u00E9mu obecn\u00E9 metodice zn\u00E1m\u00E9 jako EM algoritmus. Probl\u00E9m je formulov\u00E1n a \u0159e\u0161en s omezen\u00EDmi na nez\u00E1pornost odhad\u016F. Tato omezen\u00ED plynou \u00A8z fyzik\u00E1ln\u00ED podstaty vy\u0161et\u0159ovan\u00FDch jev\u016F. Konvergence itera\u010Dn\u00EDho postupu je velmi podstatn\u011B urychlena startem vyu\u017E\u00EDvaj\u00EDc\u00EDm vhodn\u011B nato\u010Den\u00E9 hlavn\u00ED komponenty rozkladu analyzovan\u00FDch dat"@cs . "Quinn, A." . "Z(AV0Z1075907)" . . "2004-06-30+02:00"^^ . "6"^^ . "Fully probabilistic model for functional analysis of medical image data"@en . "Belfast" . "Belfast" . . . . . "Fully probabilistic model for functional analysis of medical image data" . .