Related Experiment Video
Updated: Aug 5, 2026
11:16
In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
Published on: February 25, 2022
Investigating Biventricular Intracardiac Flow Remodeling in Marathon Athletes With 4D Flow Cardiac MRI
Mingsong Tang1, Wenjing Ren1,2, Guangyao Liu1,2
1Department of Magnetic Resonance, The Second Hospital & Clinical Medical School, Lanzhou University, Lanzhou, China.
Journal of Magnetic Resonance Imaging : JMRI
|July 27, 2026
Summary
Marathon runners show altered heart blood flow patterns, with decreased direct flow and increased residual volume, linked to cardiac remodeling. This study used 4D Flow MRI to assess these hemodynamic changes in athletes versus controls.
Area of Science:
- Cardiovascular Imaging
- Physiology
- Sports Medicine
Background:
- Exercise-induced cardiac remodeling (EICR) can mimic early cardiomyopathy, posing diagnostic challenges.
- Novel imaging biomarkers are needed to differentiate EICR from pathological conditions.
- Intracardiac hemodynamics is linked to EICR and may offer important clinical insights.
Purpose of the Study:
- To characterize biventricular intracardiac flow components in marathon athletes.
- To investigate the association between these flow components and cardiac structural remodeling.
Main Methods:
- Prospective study involving 51 marathon athletes and 51 sedentary controls.
- Utilized 4D Flow MRI at 3.0T to quantify ventricular volumes, mass, function, and intracardiac flow parameters.
- Employed exploratory path modeling to analyze relationships between hemodynamics and cardiac structure.
Main Results:
- Athletes demonstrated significantly lower direct flow and higher residual volume in both ventricles compared to controls.
- Significant associations were found between biventricular flow components and cardiac structural/functional metrics.
- Path modeling confirmed significant relationships, even after adjusting for age and sex.
Conclusions:
- Exercise-induced cardiac remodeling (EICR) is associated with a distinct hemodynamic profile: reduced direct flow and elevated residual volume.
- These hemodynamic alterations are intrinsically coupled with cardiac structural remodeling in athletes.
