3D analysis of transmural myocardial strain from sonomicrometric crystals in the open chest dog

G. Saracino, A. Ragnoni, Z. Popovic, C. Corsi, N. Greenberg, C. Lamberti, J. D. Thomas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Interest in left ventricular (LV) mechanics has recently focused on detailed 3D analysis of LV deformations. Our goal is to investigate transmural strain variability within the normal ventricle and during the early stages of ischemia using sonomicrometric crystals implanted into canine LV wall. In this study 3 open chest dog models were implanted in a two-tetrahedron configuration with three crystals on the epicardial surface, three on the endocardial surface and one in the LV midwall. Our algorithm numerically reconstructs local ventricular 3D geometry and mechanics including radial, longitudinal and circumferential strain. Along with EKG, pressure-volume signals were acquired using a catheter introduced to LV from the femoral artery. Results obtained clearly illustrate a difference in strain across the myocardium. This study shows that the method can disclose important information regarding transmural variability in animal model and further investigation with different pacing and conditions could enhance understating of LV Mechanics.

Original languageEnglish (US)
Title of host publicationComputers in Cardiology 2008, CAR
Pages1097-1100
Number of pages4
DOIs
StatePublished - Dec 1 2008
EventComputers in Cardiology 2008, CAR - Bologna, Italy
Duration: Sep 14 2008Sep 17 2008

Publication series

NameComputers in Cardiology
Volume35
ISSN (Print)0276-6574

Other

OtherComputers in Cardiology 2008, CAR
CountryItaly
CityBologna
Period9/14/089/17/08

ASJC Scopus subject areas

  • Computer Science Applications
  • Cardiology and Cardiovascular Medicine

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