获取途径

作者

Shiqin Yu, Xiuyu Chen, Kai Yang, Jiaxin Wang, Kankan Zhao, Wenhao Dong, Weipeng Yan, Guohai Su, Shihua Zhao

作者单位

Department of Cardiology, Jinan Central Hospital, Shandong First Medical University and Shandong Academy of Medical Sciences, No. 105 Jiefang Road, Jinan, 250013, Shandong, China. gttstg@16 MR Center, Fuwai Hospital, Stata Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases of China, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167, Beilishi Road, Xicheng District, Beijing, 100037, China. MR Center, Fuwai Hospital, Stata Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases of China, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167, Beilishi Road, Xicheng District, Beijing, 100037, China. cjrzhaoshihua2009@16 Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen, 518055, China. Affiliations com.

刊名

European radiology

年份

2021

ISSN

1432-1084

关键词

Fractals Isolated noncompaction of the ventricular myocardium Left ventricle Magnetic resonance imaging Strain.

摘要

Objectives: To investigate the correlation between the extent of excessive trabeculation assessed by fractal dimension and myocardial contractility assessed by cardiac MRI feature tracking in patients with left ventricular noncompaction and normal left ventricular ejection fraction . Methods: Forty-one LVNC patients with normal LVEF and 41 healthy controls were retrospectively included. All patients fulfilled three available diagnostic criteria on MRI. Cardiac MRI feature tracking was perform...更多

Objectives: To investigate the correlation between the extent of excessive trabeculation assessed by fractal dimension and myocardial contractility assessed by cardiac MRI feature tracking in patients with left ventricular noncompaction and normal left ventricular ejection fraction . Methods: Forty-one LVNC patients with normal LVEF and 41 healthy controls were retrospectively included. All patients fulfilled three available diagnostic criteria on MRI. Cardiac MRI feature tracking was performed on cine images to determine left ventricular peak strains in three directions: global radial strain , global circumferential strain , and global longitudinal strain . The complexity of excessive trabeculation was quantified by fractal analysis on short-axis cine stacks. Results: Compared with controls, patients with LVNC had impaired GRS, GCS, and GLS . The global, maximal, and regional FD values of the LVNC population were all significantly higher than those of the controls . Global FD was positively correlated with the end-diastolic volume index, end-systolic volume index, and stroke volume index , but negatively correlated with GRS and GCS . Moreover, apical FD was also weakly associated with LVEF and GLS . Conclusion: In patients with LVNC, LV systolic dysfunction was detected early by cardiac MRI feature tracking despite the presence of normal LVEF and was associated with excessive trabecular complexity assessed by FD. Key points: • Left ventricular global strain was already impaired in patients with extremely prominent excessive trabeculation but normal left ventricular ejection fraction. • An increased fractal dimension was associated with impaired deformation in left ventricular noncompaction.收起

文献类型

期刊

浏览量

1