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4D Flow MRI

Time-resolved three-directional phase-contrast MRI for advanced cardiovascular flow analysis.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Radyoloji department. Book Appointment →

What is 4D Flow MRI?

4D flow MRI is a time-resolved three-directional phase-contrast technique that measures blood velocity within an entire volume across the cardiac cycle. Unlike 2D phase contrast, it provides a comprehensive map of intravascular hemodynamics.

Clinical applications include evaluation of aortic aneurysms and dissection, assessment of valvular regurgitation, congenital heart disease (Fontan circulation, transposition repairs) and pulmonary hypertension.

Postprocessing yields visualization of streamlines, pathlines and quantitative parameters such as wall shear stress, kinetic energy and pulse-wave velocity. Long acquisition times and need for skilled postprocessing remain limitations.

Symptoms

Bicuspid aortic valve with progressive aortic dilation
Postoperative congenital heart disease
Suspected intracardiac shunt
Complex valvular regurgitation
Pulmonary arterial hypertension assessment
Cerebral aneurysm hemodynamics

Risk Factors

Need for repeated cardiovascular imaging
Avoidance of ionizing radiation
Children and young adults
Pregnancy (later trimesters, with caution)
Patients unable to undergo CT angiography

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Dilated aorta in bicuspid aortic valve
  • Pre/postoperative complex congenital heart disease
  • Mixed valvular lesions of unclear severity
  • Suspected pulmonary hypertension etiology
  • Pre-procedural planning for vascular intervention

Treatment Methods

01
Standard MRI safety screening (devices, claudium, GFR)
02
Use of cardiac and respiratory gating
03
Specialized postprocessing software
04
Multidisciplinary interpretation (radiology, cardiology, surgery)
05
Combine with cine and contrast-enhanced sequences
06
Clinical correlation with echocardiography

Which Department to Visit?

You can visit our Radyoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.