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

Details

Serval ID
serval:BIB_F1EA756D01A9
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Real-time MR imaging of myocardial regional function using strain-encoding (SENC) with tissue through-plane motion tracking.
Journal
Journal of Magnetic Resonance Imaging
Author(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]
Publication state
Published
Issued date
2007
Volume
26
Number
6
Pages
1461-1470
Language
english
Notes
Publication types: Journal Article ; Research Support, N.I.H., Extramural Publication Status: ppublish
Abstract
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.
Keywords
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
Yes
Create date
02/03/2010 17:04
Last modification date
20/08/2019 17:19
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