Premium
Contrast‐enhanced MRI index of diffuse myocardial fibrosis is increased in primary aldosteronism
Author(s) -
Su MaoYuan M.,
Wu VinCent,
Yu HsiYu,
Lin YenHung,
Kuo ChinChi,
Liu KaoLang,
Wang ShuoMeng,
Chueh ShihChieh,
Lin LianYu,
Wu KwanDun,
Tseng WenYih I.
Publication year - 2012
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.23592
Subject(s) - medicine , myocardial fibrosis , primary aldosteronism , ventricle , magnetic resonance imaging , nuclear medicine , fibrosis , cardiology , radiology , aldosterone
Purpose: To assess the degree of myocardial fibrosis in patients with primary aldosteronism (PA). Materials and Methods: Twenty‐five patients with PA and 12 age‐matched healthy volunteers underwent cine and late gadolinium enhancement (LGE) magnetic resonance imaging (MRI) on a 1.5 T MR system. From volume–time curves of cine MRI, the time for deceleration (Tdec) was determined to assess the left ventricle (LV) chamber stiffness. Based on phase‐sensitive reconstructed LGE images, a fibrosis index called enhancement value (EV) was computed as the signal intensity change in the myocardium over blood before and after contrast. Both Tdec and EV were compared between patients and controls. The association between Tdec and EV was investigated. Results: Patients showed a significantly higher EV (0.43 ± 0.05 vs. 0.36 ± 0.07; P = 0.002) and a significantly shorter Tdec (11.5 ± 3.5 %RR vs. 15.3 ± 2.4 %RR; P = 0.004) than controls. Significant correlations between EV and Tdec were observed in patients ( r = −0.46, P = 0.018), in controls ( r = −0.68, P = 0.015) and in all subjects ( r = −0.63, P < 0.001). Conclusion: The fibrosis index is increased in patients with PA and the increase imposes an adverse effect on LV diastolic function. J. Magn. Reson. Imaging 2012;35:1349–1355. © 2012 Wiley Periodicals, Inc.