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Contrast-enhanced magnetic resonance imaging identifies focal regions of intramyocardial fibrosis in patients with severe aortic valve disease: Correlation with quantitative histopathology.

Publication ,  Journal Article
Nigri, M; Azevedo, CF; Rochitte, CE; Schraibman, V; Tarasoutchi, F; Pommerantzeff, PM; Brandão, CM; Sampaio, RO; Parga, JR; Avila, LF ...
Published in: American Heart Journal
February 2009

Chronic aortic valve disease (AVD) is characterized by progressive accumulation of interstitial myocardial fibrosis (MF). However, assessment of MF accumulation has only been possible through histologic analyses of endomyocardial biopsies. We sought to evaluate contrast-enhanced magnetic resonance imaging (ce-MRI) as a noninvasive method to identify the presence of increased MF in patients with severe AVD.Seventy patients scheduled to undergo aortic valve replacement surgery were examined by cine and ce-MRI in a 1.5-T scanner. Cine images were used for the assessment of left ventricular (LV) volumes, mass, and function. Delayed-enhancement images were used to characterize the regions of MF. In addition, histologic analyses of myocardial samples obtained during aortic valve replacement surgery were used for direct quantification of interstitial MF. Ten additional subjects who died of noncardiac causes served as controls for the quantitative histologic analyses.Interstitial MF determined by histopathologic analysis was higher in patients with AVD than in controls (2.7% +/- 2.0% vs 0.6% +/- 0.2%, P = .001). When compared with histopathologic results, ce-MRI demonstrated a sensitivity of 74%, a specificity of 81%, and an accuracy of 76% to identify AVD patients with increased interstitial MF. There was a significant inverse correlation between interstitial MF and LV ejection fraction (r = -0.67, P < .0001). Accordingly, patients with identifiable focal regions of MF by ce-MRI exhibited worse LV systolic function than those without MF (45% +/- 14% vs 65% +/- 14%, P < .0001).Contrast-enhanced MRI allows for the noninvasive detection of focal regions of MF in patients with severe AVD. Moreover, patients with identifiable MF by ce-MRI exhibited worse LV functional parameters.

Published In

American Heart Journal

DOI

EISSN

1097-6744

ISSN

0002-8703

Publication Date

February 2009

Volume

157

Issue

2

Start / End Page

361 / 368

Related Subject Headings

  • Myocardium
  • Middle Aged
  • Male
  • Magnetic Resonance Imaging
  • Humans
  • Heart Valve Diseases
  • Fibrosis
  • Female
  • Contrast Media
  • Chronic Disease
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Nigri, M., Azevedo, C. F., Rochitte, C. E., Schraibman, V., Tarasoutchi, F., Pommerantzeff, P. M., … Grinberg, M. (2009). Contrast-enhanced magnetic resonance imaging identifies focal regions of intramyocardial fibrosis in patients with severe aortic valve disease: Correlation with quantitative histopathology. American Heart Journal, 157(2), 361–368. https://doi.org/10.1016/j.ahj.2008.09.012
Nigri, Marcelo, Clerio F. Azevedo, Carlos Eduardo Rochitte, Vladimir Schraibman, Flavio Tarasoutchi, Pablo M. Pommerantzeff, Carlos Manuel Brandão, et al. “Contrast-enhanced magnetic resonance imaging identifies focal regions of intramyocardial fibrosis in patients with severe aortic valve disease: Correlation with quantitative histopathology.American Heart Journal 157, no. 2 (February 2009): 361–68. https://doi.org/10.1016/j.ahj.2008.09.012.
Nigri M, Azevedo CF, Rochitte CE, Schraibman V, Tarasoutchi F, Pommerantzeff PM, et al. Contrast-enhanced magnetic resonance imaging identifies focal regions of intramyocardial fibrosis in patients with severe aortic valve disease: Correlation with quantitative histopathology. American Heart Journal. 2009 Feb;157(2):361–8.
Nigri, Marcelo, et al. “Contrast-enhanced magnetic resonance imaging identifies focal regions of intramyocardial fibrosis in patients with severe aortic valve disease: Correlation with quantitative histopathology.American Heart Journal, vol. 157, no. 2, Feb. 2009, pp. 361–68. Epmc, doi:10.1016/j.ahj.2008.09.012.
Nigri M, Azevedo CF, Rochitte CE, Schraibman V, Tarasoutchi F, Pommerantzeff PM, Brandão CM, Sampaio RO, Parga JR, Avila LF, Spina GS, Grinberg M. Contrast-enhanced magnetic resonance imaging identifies focal regions of intramyocardial fibrosis in patients with severe aortic valve disease: Correlation with quantitative histopathology. American Heart Journal. 2009 Feb;157(2):361–368.
Journal cover image

Published In

American Heart Journal

DOI

EISSN

1097-6744

ISSN

0002-8703

Publication Date

February 2009

Volume

157

Issue

2

Start / End Page

361 / 368

Related Subject Headings

  • Myocardium
  • Middle Aged
  • Male
  • Magnetic Resonance Imaging
  • Humans
  • Heart Valve Diseases
  • Fibrosis
  • Female
  • Contrast Media
  • Chronic Disease