Directional analysis of cardiac motion field from gated fluorodeoxyglucose PET images using the Discrete Helmholtz Hodge Decomposition

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Arquivos
art_SIMS_Directional_analysis_of_cardiac_motion_field_from_gated_2018.PDF (3.41 MB)
Citações na Scopus
5
Tipo de produção
article
Data de publicação
2018
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
PERGAMON-ELSEVIER SCIENCE LTD
Autores
SIMS, J. A.
Citação
COMPUTERIZED MEDICAL IMAGING AND GRAPHICS, v.65, Special Issue, p.69-78, 2018
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Objectives: Extract directional information related to left ventricular (LV) rotation and torsion from a 4D PET motion field using the Discrete Helmholtz Hodge Decomposition (DHHD). Materials and methods: Synthetic motion fields were created using superposition of rotational and radial field components and cardiac fields produced using optical flow from a control and patient image. These were decomposed into curl-free (CF) and divergence-free (DF) components using the DHHD. Results: Synthetic radial components were present in the CF field and synthetic rotational components in the DF field, with each retaining its center position, direction of motion and diameter after decomposition. Direction of rotation at apex and base for the control field were in opposite directions during systole, reversing during diastole. The patient DF field had little overall rotation with several small rotators. Conclusions: The decomposition of the LV motion field into directional components could assist quantification of LV torsion, but further processing stages seem necessary.
Palavras-chave
Discrete Helmholtz Hodge Decomposition, Cardiac motion field analysis, Positron emission tomography, Optical flow
URI
https://observatorio.fm.usp.br/handle/OPI/27158
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Coleções
Artigos e Materiais de Revistas Científicas - HC/InCor