Clinical Applications of MRA 4D-Flow

Area of Science:

• Cardiovascular Imaging
• Medical Physics
• Hemodynamics

Background:

• Four-dimensional Flow cardiovascular magnetic resonance (4D-Flow CMR) is a volumetric, time-resolved, three-directional velocity-encoded MRI technique.
• It captures detailed flow velocity data throughout the cardiac cycle within a defined region.

Purpose of the Study:

• To review current clinical applications of 4D-Flow CMR.
• To provide an overview of its underlying physics and expert consensus.
• To present recent advancements and compare its pros and cons with existing methods.

Main Methods:

• Review of current literature and expert consensus documents on 4D-Flow CMR.
• Analysis of clinical applications across various cardiovascular pathologies.
• Comparison with standard and gold-standard cardiovascular assessment techniques.

Main Results:

• 4D-Flow CMR provides unique insights into cardiac and circulatory physiology.
• It quantifies advanced hemodynamic parameters in aortic diseases, valvular heart disease, congenital heart disease, and more.
• Recent studies show its clinical impact on disease management and prognosis.

Conclusions:

• 4D-Flow CMR offers significant qualitative and quantitative flow dynamics information.
• Its impact on cardiac chambers, vessel walls, and myocardium is substantial.
• Simplifying acquisition and post-processing will expand its clinical and investigational utility.