Real-time MR imaging of myocardial regional function using strain-encoding (SENC) with tissue through-plane motion tracking.

Détails

ID Serval
serval:BIB_F1EA756D01A9
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Real-time MR imaging of myocardial regional function using strain-encoding (SENC) with tissue through-plane motion tracking.
Périodique
Journal of Magnetic Resonance Imaging
Auteur(s)
Ibrahim el S.H., Stuber M., Fahmy A.S., Abd-Elmoniem K.Z., Sasano T., Abraham M.R., Osman N.F.
ISSN
1053-1807[print], 1053-1807[linking]
Statut éditorial
Publié
Date de publication
2007
Volume
26
Numéro
6
Pages
1461-1470
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, N.I.H., Extramural Publication Status: ppublish
Résumé
PURPOSE: To implement real-time myocardial strain-encoding (SENC) imaging in combination with tracking the tissue displacement in the through-plane direction. MATERIALS AND METHODS: SENC imaging was combined with the slice-following technique by implementing three-dimensional (3D) selective excitation. Certain adjustments were implemented to reduce scan time to one heartbeat. A total of 10 volunteers and five pigs were scanned on a 3T MRI scanner. Spatial modulation of magnetization (SPAMM)-tagged images were acquired on planes orthogonal to the SENC planes for comparison. Myocardial infarction (MI) was induced in two pigs and the resulting SENC images were compared to standard delayed-enhancement (DE) images. RESULTS: The strain values computed from SENC imaging with slice-following showed significant difference from those acquired without slice-following, especially during systole (P < 0.01). The strain curves computed from the SENC images with and without slice-following were similar to those computed from the orthogonal SPAMM images, with and without, respectively, tracking the tag line displacement in the strain direction. The resulting SENC images showed good agreement with the DE images in identifying MI in infarcted pigs. CONCLUSION: Correction of through-plane motion in real-time cardiac functional imaging is feasible using slice-following. The strain measurements are more accurate than conventional SENC measurements in humans and animals, as validated with conventional MRI tagging.
Mots-clé
Animals, Humans, Imaging, Three-Dimensional, Magnetic Resonance Imaging/instrumentation, Magnetic Resonance Imaging/methods, Movement, Myocardial Contraction, Myocardial Infarction/diagnosis, Phantoms, Imaging, Swine
Pubmed
Web of science
Open Access
Oui
Création de la notice
02/03/2010 17:04
Dernière modification de la notice
09/05/2019 3:20
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