MRI images and clinical characteristics of right ventricular outflow tract obstruction in patients with hypertrophic cardiomyopathy
10.3969/j.issn.1002-1671.2025.07.012
- VernacularTitle:累及右心室流出道梗阻的肥厚型心肌病MRI影像和临床特征
- Author:
Wei LI
1
;
Kai YANG
;
Di ZHOU
;
Fengkai LI
;
Shaojun LI
;
Mingyuan YUAN
;
Minjie LU
Author Information
1. 中国医学科学院北京协和医学院 国家心血管病中心 阜外医院磁共振影像科,北京 100037;上海浦东新区周浦医院放射科,上海 201318
- Publication Type:Journal Article
- Keywords:
hypertrophic cardiomyopathy;
right ventricle;
ventricular outflow tract obstruction;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2025;41(7):1134-1138
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the MRI images and clinical characteristics of right ventricular outflow tract obstruction(RVOTO)in hypertrophic cardiomyopathy(HCM)patients.Methods The clinical and imaging data of 30 patients with RVOTO and 55 randomly selected patients with simple left ventricular outflow tract obstruction(LVOTO)were retrospectively analyzed,and the data between the two groups were statistically analyzed.Results The N-terminal pro-B type natriuretic peptide(NT-proBNP)value,the average thickness of left ventricular basal end diastolic anterior wall and anterior septum,the proportion of"scallop sign"on imaging,and the mass percentage of myocardial late gadolinium enhancement(LGE)in RVOTO group were significantly higher than those in LVOTO group(P<0.01).Conclusion RVOTO is the result of multiple factors,including the thickening of interventricular septum,as well as the right ventricular free wall.When the"scallop sign"appears in MRI examinations of HCM patients,it is necessary to be highly vigilant for the presence of RVOTO.
