Abstract #1885

Circadian change of cardiovascular function: a cardiovascular magnetic resonance perspective

Qiming Liu¹, Qifan Lu², Chenxu Zhao³, Chen Zhang⁴, and Qi Yang¹

¹Department of Radiology, Beijing Chaoyang Hospital, Beijing, China, ²High School Affiliated to Shanghai Fudan University, Shanghai, China, ³Division of Cardiology, Department of Medicine and Therapeutics, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, China, ⁴MR Research Collaboration, Siemens Healthineers, Beijing, China

Synopsis

Keywords: Myocardium, Cardiovascular

Motivation: Circadian change of cardiovascular function may present and affect the reliability of cardiac MR examination results.

Goal(s): This study aims to evaluate the circadian change of cardiovascular function in volunteers using CMR.

Approach: 78 volunteers were scheduled to receive three CMR scans at 7:00, 15:00, and 23:00 in one day. Biventricular function and myocardial tissue level characteristics were compared.

Results: Overall, there were circadian changes of T2 mapping, LVEF, RVEF, LVCI, and RVCI, but no circadian change of T1 mapping was observed.

Impact: The circadian change of cardiovascular function could lead to the potential mis-interpretation of patients' cardiovascular function, understanding and adjusting CMR results according to examination time could be beneficial for clinicians.

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