A Novel Explicit 2D+t Cyclic Shape Model Applied to Echocardiography

Autor:	Ramón Casero, J. Alison Noble
Rok vydání:	2008
Předmět:	Data set Mathematical optimization Point distribution model Principal component analysis Multidimensional scaling Extension (predicate logic) Algorithm Displacement (vector) Kernel principal component analysis Mathematics Variable (mathematics)
Zdroj:	Medical Image Computing and Computer-Assisted Intervention – MICCAI 2008 ISBN: 9783540859871 MICCAI (1)
DOI:	10.1007/978-3-540-85988-8_63
Popis:	In this paper, we propose a novel explicit 2D+t cyclic shape model that extends the Point Distribution Model (PDM) to shapes like myocardial contours with cyclic dynamics. We also propose an extension to Procrustes alignment that removes pose and subject size variability while maintaining dynamic effects. Our model draws on ideas from Principal Component Analysis (PCA), Multidimensional Scaling (MDS) and Kernel PCA (KPCA) and solves 3 shortcomings of previous implicit models: 1) cardiac cycles in the data set do not each need to have the same number of frames, 2) the required number of subjects for statistically significant results is substantially reduced and 3) the displacement of contour points incorporates time as an explicit variable. We illustrate our method by computing models of the myocardium in the 4 principal planes of 2D+t echocardiography data.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2dd83368646e72ea42382d086c1c47d3 https://doi.org/10.1007/978-3-540-85988-8_63 Zobrazit plný text záznamu