Related Experiment Video
Updated: Sep 10, 2025
11:16
In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
Published on: February 25, 2022
3.4K
4D Flow MRI Velocity and Turbulence Mapping in Mild Valvular Heart Disease
Tamara Bianchessi1,2, Chiara Trenti1,2, Carl-Johan Carlhäll1,2,3,4
1Division of Diagnostics and Specialist Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
Journal of Magnetic Resonance Imaging : JMRI
|August 20, 2025
Summary
Turbulent kinetic energy (TKE) measured by 4D flow MRI is elevated in mild valvular heart disease (VHD). TKE may be a more discriminative hemodynamic marker for early VHD than velocity alone.
Area of Science:
- Cardiovascular Imaging
- Biomedical Engineering
- Hemodynamics
Background:
- Valvular heart disease (VHD) often causes turbulent blood flow.
- Turbulent kinetic energy (TKE) measured by 4D flow MRI may aid in early VHD detection.
- Current VHD metrics may be complemented by TKE analysis.
Purpose of the Study:
- To investigate TKE as a potential marker for VHD.
- To correlate TKE with flow velocity and cardiovascular geometry.
- To assess TKE's discriminative potential in VHD.
Main Methods:
- Retrospective observational cross-sectional study.
- 106 VHD patients and 20 controls underwent 4D flow MRI.
- Analysis included TKE, velocity, and diameter measurements.
Main Results:
- TKE significantly correlated with flow velocity and less strongly with diameters.
- Elevated TKE was observed in aortic stenosis, aortic regurgitation, mitral regurgitation, tricuspid regurgitation, and pulmonary regurgitation compared to controls.
- Specific elevations noted in aortic, left ventricular, left atrial, right atrial, and right ventricular TKE.
Conclusions:
- TKE is elevated even in mild VHD.
- TKE shows potential as a more discriminative hemodynamic marker for early VHD.
- TKE provides complementary information to velocity for VHD assessment.
