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Titolo:
A multivariate approach to registration of dissimilar tomographic images
Autore:
Andersson, JLR; Thurfjell, L;
Indirizzi:
Inst Neurol, Wellcome Dept Cognit Neurol, London WC1N 3BG, England Inst Neurol London England WC1N 3BG nit Neurol, London WC1N 3BG, England Uppsala Univ, PET Ctr, Uppsala, Sweden Uppsala Univ Uppsala SwedenUppsala Univ, PET Ctr, Uppsala, Sweden Uppsala Univ, Ctr Image Anal, Uppsala, Sweden Uppsala Univ Uppsala Sweden psala Univ, Ctr Image Anal, Uppsala, Sweden
Titolo Testata:
EUROPEAN JOURNAL OF NUCLEAR MEDICINE
fascicolo: 7, volume: 26, anno: 1999,
pagine: 718 - 733
SICI:
0340-6997(199907)26:7<718:AMATRO>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; PRINCIPAL COMPONENT ANALYSIS; MR BRAIN IMAGES; 3-DIMENSIONAL REGISTRATION; AUTOMATED ALGORITHM; MUTUAL INFORMATION; PET IMAGES; VALIDATION; DOPAMINE; ACCURACY;
Keywords:
registration; positron emission tomography; multivariate; mutual information;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
45
Recensione:
Indirizzi per estratti:
Indirizzo: Andersson, JLR Inst Neurol, Wellcome Dept Cognit Neurol, Queen Sq, London WC1N 3BG, England Inst Neurol Queen Sq London England WC1N 3BG 3BG, England
Citazione:
J.L.R. Andersson e L. Thurfjell, "A multivariate approach to registration of dissimilar tomographic images", EUR J NUCL, 26(7), 1999, pp. 718-733

Abstract

We devised a method to allow for retrospective registration of tomographicimages with very different information content, the main emphasis being onsets of positron emission tomography images obtained with different tracers. A multivariate cost-function based on information theory was used as an index of "goodness-of-alignment". The cost-function makes no assumptions regarding the form of the relationship between the two image sets, and is hence very general. Image volumes, with known relative spatial orientation, were simulated for tracers with different uptake patterns and the method was validated by assessing its ability to recover these known orientations. Themethod was able to recover the known transformations with an accuracy of about 1 mm and 1 degrees along and around all axes, even for tracer combinations with radically different uptake patterns and with large initial misalignment. With the suggested method it is feasible to retrospectively align examinations obtained with different tracers and/or modalities.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 18:25:40