| Left atrial volume and function assessment by magnetic resonance imaging. | |
| | |
MedLine Citation:
|
PMID: 20487121 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
INTRODUCTION: In patients with atrial fibrillation undergoing catheter ablation, magnetic resonance imaging (MRI) can determine left atrial (LA) volume and function before and after ablation. The most accurate, but time consuming, method to determine LA volume is the multiple slice method (MSM), which involves manual tracing of LA area on each slice. The area length method (ALM) offers a simplified, but unvalidated, alternative for LA volume assessment by MRI. The aim of this study was to compare LA volume and function assessment by ALM with MSM. METHODS AND RESULTS: MRI was performed before and after catheter ablation in 40 patients with atrial fibrillation (30 male, mean age 57 years). All patients had sinus rhythm during imaging. In total, 72 MRI scans were available. LA end-diastolic and end-systolic volumes (EDV, respectively ESV) were measured by both methods. LA function was determined by calculating LA ejection fraction (EF = (EDV-ESV)/EDV). Measured by ALM, mean LA EDV and ESV were significantly lower than using MSM (102 mL and 49 mL vs 111 mL and 65 mL, respectively, P < 0.001) with a larger difference in mean ESV than EDV (16 mL vs 9 mL). This resulted in an overestimation of LA EF by ALM with a mean of 11% (54% by ALM and 42% by MSM, P < 0.001). ALM correlated well with MSM for LA EDV and ESV (r = 0.77, respectively 0.85), and showed no significant difference in intraobserver and interobserver variability. CONCLUSION: ALM significantly underestimates LA volumes and overestimates LA function, but correlates well with the more accurate MSM. |
| | |
Authors:
|
Irene E Hof; Birgitta K Velthuis; Vincent J Van Driel; Fred H Wittkampf; Richard N Hauer; Peter Loh |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of cardiovascular electrophysiology Volume: 21 ISSN: 1540-8167 ISO Abbreviation: J. Cardiovasc. Electrophysiol. Publication Date: 2010 Nov |
Date Detail:
|
Created Date: 2010-11-02 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9010756 Medline TA: J Cardiovasc Electrophysiol Country: United States |
Other Details:
|
Languages: eng Pagination: 1247-50 Citation Subset: IM |
Copyright Information:
|
© 2010 Wiley Periodicals, Inc. |
Affiliation:
|
Department of Cardiology Department of Radiology, University Medical Center, Utrecht, The Netherlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Autonomic dysfunction and new-onset atrial fibrillation in patients with left ventricular systolic d...
Next Document: Long-term mechanical consequences of permanent right ventricular pacing: effect of pacing site.