Helical structure of the cardiac ventricular anatomy assessed by diffusion tensor magnetic resonance imaging with multiresolution tractography

Ferran Poveda, Debora Gil, Enric Martí, Albert Andaluz, Manel Ballester, Francesc Carreras

Research output: Contribution to journalArticleResearchpeer-review

45 Citations (Scopus)

Abstract

Introduction and objectives Deeper understanding of the myocardial structure linking the morphology and function of the heart would unravel crucial knowledge for medical and surgical clinical procedures and studies. Several conceptual models of myocardial fiber organization have been proposed but the lack of an automatic and objective methodology prevented an agreement. We sought to deepen this knowledge through advanced computer graphical representations of the myocardial fiber architecture by diffusion tensor magnetic resonance imaging. Methods We performed automatic tractography reconstruction of unsegmented diffusion tensor magnetic resonance imaging datasets of canine heart from the public database of the Johns Hopkins University. Full-scale tractographies have been built with 200 seeds and are composed by streamlines computed on the vector field of primary eigenvectors at the diffusion tensor volumes. We also introduced a novel multiscale visualization technique in order to obtain a simplified tractography. This methodology retains the main geometric features of the fiber tracts, making it easier to decipher the main properties of the architectural organization of the heart. Results Output analysis of our tractographic representations showed exact correlation with low-level details of myocardial architecture, but also with the more abstract conceptualization of a continuous helical ventricular myocardial fiber array. Conclusions Objective analysis of myocardial architecture by an automated method, including the entire myocardium and using several 3-dimensional levels of complexity, reveals a continuous helical myocardial fiber arrangement of both right and left ventricles, supporting the anatomical model of the helical ventricular myocardial band described by F. Torrent-Guasp. © 2013 Sociedad Española de Cardiología. Published by Elsevier España, S.L. All rights reserved.
Original languageEnglish
Pages (from-to)782-790
JournalRevista Espanola de Cardiologia
Volume66
Issue number10
DOIs
Publication statusPublished - 1 Oct 2013

Keywords

  • Diffusion magnetic resonance imaging
  • Diffusion tractography
  • Heart
  • Helical heart
  • Myocardial ventricular band

Fingerprint Dive into the research topics of 'Helical structure of the cardiac ventricular anatomy assessed by diffusion tensor magnetic resonance imaging with multiresolution tractography'. Together they form a unique fingerprint.

Cite this