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Feasibility of endocardial edge detection by using an inversion recovery artifact
Author(s) -
Laffon Eric,
Cassen Christelle,
Latrabe Valérie,
Montaudon Michel,
Laurent François,
Massot Philippe,
Ducassou Dominique,
Barat JeanLouis
Publication year - 2001
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.1067
Subject(s) - snapshot (computer storage) , artifact (error) , ejection fraction , pixel , computer science , nuclear magnetic resonance , artificial intelligence , computer vision , nuclear medicine , physics , medicine , cardiology , heart failure , operating system
An inversion recovery (IR) artifact was used to delineate the blood/wall boundary in left ventricles. The artifact consisted of a hypointensity signal in pixels located at the boundary of two contiguous tissues with different T 1 relaxation times. The feasibility of measuring the ejection fraction using the artifact was tested in ten healthy volunteers, with two IR snapshot‐FLASH sequences possessing different times of repetition (TR = 11msec and TR = 3.5msec) and appropriate times of inversion. The comparison with a cine‐MRI sequence showed that ejection fraction measurements are feasible when performed with a snapshot‐FLASH sequence that has a sufficiently short TR (3.5msec). J. Magn. Reson. Imaging 2001;13:461–466. © 2001 Wiley‐Liss, Inc.