Impact of the Advisa MRI pacing system on the diagnostic quality of cardiac MR images and contraction patterns of cardiac muscle during scans: Advisa MRI randomized clinical multicenter study results.

Details

Serval ID
serval:BIB_E4FD4BB2ACD8
Type
Article: article from journal or magazin.
Collection
Publications
Title
Impact of the Advisa MRI pacing system on the diagnostic quality of cardiac MR images and contraction patterns of cardiac muscle during scans: Advisa MRI randomized clinical multicenter study results.
Journal
Heart Rhythm
Author(s)
Schwitter J., Kanal E., Schmitt M., Anselme F., Albert T., Hayes D.L., Bello D., Tóth A., Chang Y., van Osch D., Sommer T.
Working group(s)
Advisa MRI System Study Investigators
ISSN
1556-3871 (Electronic)
ISSN-L
1547-5271
Publication state
Published
Issued date
2013
Volume
10
Number
6
Pages
864-872
Language
english
Notes
Publication types: Journal ArticlePublication Status: ppublish
Abstract
BACKGROUND: The Advisa MRI system is designed to safely undergo magnetic resonance imaging (MRI). Its influence on image quality is not well known.
OBJECTIVE: To evaluate cardiac magnetic resonance (CMR) image quality and to characterize myocardial contraction patterns by using the Advisa MRI system.
METHODS: In this international trial with 35 participating centers, an Advisa MRI system was implanted in 263 patients. Of those, 177 were randomized to the MRI group and 150 underwent MRI scans at the 9-12-week visit. Left ventricular (LV) and right ventricular (RV) cine long-axis steady-state free precession MR images were graded for quality. Signal loss along the implantable pulse generator and leads was measured. The tagging CMR data quality was assessed as the percentage of trackable tagging points on complementary spatial modulation of magnetization acquisitions (n=16) and segmental circumferential fiber shortening was quantified.
RESULTS: Of all cine long-axis steady-state free precession acquisitions, 95% of LV and 98% of RV acquisitions were of diagnostic quality, with 84% and 93%, respectively, being of good or excellent quality. Tagging points were trackable from systole into early diastole (360-648 ms after the R-wave) in all segments. During RV pacing, tagging demonstrated a dyssynchronous contraction pattern, which was not observed in nonpaced (n = 4) and right atrial-paced (n = 8) patients.
CONCLUSIONS: In the Advisa MRI study, high-quality CMR images for the assessment of cardiac anatomy and function were obtained in most patients with an implantable pacing system. In addition, this study demonstrated the feasibility of acquiring tagging data to study the LV function during pacing.
Pubmed
Web of science
Open Access
Yes
Create date
04/07/2013 19:45
Last modification date
20/08/2019 16:08
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