Feasibility of endocardial edge detection by using an inversion recovery artifact

✍ Scribed by Eric Laffon; Christelle Cassen; Valérie Latrabe; Michel Montaudon; François Laurent; Philippe Massot; Dominique Ducassou; Jean-Louis Barat

• Book ID: 102372537
• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 179 KB
• Volume: 13
• Category: Article
• ISSN: 1053-1807
• DOI: 10.1002/jmri.1067

✦ Synopsis

Abstract

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.