PURPOSE: To assess the prevalence and pattern of myocardial late gadolinium enhancement (LGE) and its functional impact on patients with left ventricular hypertrophy caused by aortic valve stenosis. MATERIALS AND METHODS: Cardiac magnetic resonance imaging of 40 patients (17 female, 23 male, mean age: 76.6 +/- 22.5 years) with known aortic valve stenosis (mean aortic valve area: 89.8 +/- 19.2 mm(2)) and without coronary artery disease was performed at 1.5 T using steady-state free precession sequences for aortic valve planimetry and for the assessment of left ventricular (LV) volumes and mass. Ten to 15 minutes after injection of 0.2 mmol Gd-DTPA per kilogram body weight, inversion-recovery prepared spoiled gradient echo images were acquired in standard long and short axis views to detect areas of LGE. RESULTS: LGE was observed in 32.5 % (13/40) of our patients. LGE was mainly located in the basal septal and inferior LV segments, and showed a non-ischemic pattern with sparing of the subendocardial region. Patients with LGE showed lower LV ejection fractions (55.5 +/- 13.8 % vs. 69.1 +/- 10.7 %, p = 0.0014), higher LV end-systolic volumes (59.8 +/- 33.3 ml vs. 36.6 +/- 16.0 ml, p = 0.0048), and LV masses (211.0 +/- 13.8 vs. 157.9 +/- 37.5 g, p = 0.0002) compared to patients without LGE. CONCLUSION: LGE is frequent in patients with hypertrophic left ventricles due to aortic valve stenosis and is associated with worse LV function.
|Journal||RöFo : Fortschritte auf dem Gebiete der Röntgenstrahlen und der Nuklearmedizin|
|Number of pages||5|
|Publication status||Published - 01.01.2009|