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Tag: 4D flow MRI

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Study design for a single pegloticase infusion with cardiac and kidney MRI before treatment and one week afterward.

Oct 4, 2026

Rapid Uric Acid Lowering: What Cardiac and Kidney MRI Revealed in a Pegloticase Pilot

A pegloticase pilot found an unfavorable cardiac MRI signal after rapid uric acid lowering, but the small uncontrolled study cannot establish clinical harm.

Flexible and stiff phantom shapes, flow waveforms, cross-correlation alignment, and pulse transit time versus distance

Oct 4, 2026

Same Flow Waveforms, Different PWV? Why the Interpolation Time Step Matters

A methods study examines how the interpolation time step influences cross-correlation-based aortic PWV estimation.

Global and regional body-surface-area-indexed flow comparisons between Fontan participants and biventricular controls

Oct 4, 2026

Beyond Cardiac Output: Mapping Blood Flow and Oxygen Delivery in Fontan Circulation

MRI shows how similar cardiac output can coexist with different systemic and regional blood flow in children and adolescents with Fontan circulation.

Baseline 4D flow MRI visualizations in patients who did and did not subsequently undergo aortic valve replacement

Oct 4, 2026

Aortic Stenosis and 4D Flow MRI: What Can an Aortic Vortex Tell Us?

An exploratory study asks whether baseline aortic vortex volume is associated with later valve replacement in moderate aortic stenosis.

Doppler-gated fetal 4D flow MRI pathlines entering the right atrium, crossing the foramen ovale, and continuing toward the aorta

Sep 30, 2026

Before the First Breath: Following Fetal Blood Flow with 4D Flow MRI

Before a baby takes its first breath, blood already has a route around the lungs. The placenta supplies oxygen, and the foramen ovale, a normal opening between the atria, allows part of…

Mitral valve vortex ring in red and vertical vortex core in blue, with particle traces and velocity vectors from 4D flow MRI. Park et al. 2026 Figure 6, CC BY.

Sep 30, 2026

4D Flow MRI after Myocardial Infarction: Following Two Pigs across 10 Time Points

Ten MRI sessions per animal tracked post-MI remodeling over 11 weeks, revealing changing filling-flow orientation alongside relatively preserved vorticity in two pigs.

Full Figure 1 comparing conventional and compressed sensing 4D flow MRI TKE maps, streamlines, and quantitative analyses in a healthy participant and an aortic stenosis patient

Sep 29, 2026

Compressed Sensing 4D Flow MRI for Turbulent Kinetic Energy in Aortic Stenosis

Compare compressed sensing and conventional 4D flow MRI for turbulent kinetic energy in aortic stenosis, including scan time and regional differences.

Sep 29, 2026

Portal Vein 4D Flow MRI: Vorticity and High-Risk Esophageal Varices

Explore portal venous vorticity and high-risk esophageal varices in our 104-patient 4D flow MRI study of cirrhosis, with methods and key results.

Patient being prepared for a magnetic resonance imaging examination. Photo: National Cancer Institute / Unsplash.

Sep 29, 2026

4D Flow MRI E/A Ratio Reference Values in Healthy Volunteers

Explore 4D flow MRI E/A velocity, flow and kinetic energy reference values in healthy volunteers, with age, LV/RV views and sequence details.

Figure 1 from Park et al., showing mitral valve tracking and left ventricular flow and vorticity analysis using 4D flow CMR.

Sep 28, 2026

4D Flow MRI in Type 2 Diabetes: The E/A Vorticity Ratio

Our study explores E/A vorticity in type 2 diabetes, associations with echocardiographic diastolic indices, and complementary 4D flow MRI measurements.