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Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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Imaging Studies for Cardiovascular System IV: CMRI01:21

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Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
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Blood Flow01:29

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Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow.
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Related Experiment Video

Updated: Dec 26, 2025

In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging
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In vitro Assessment of Aortic Regurgitation Using Four-Dimensional Flow Magnetic Resonance Imaging

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4D Flow with MRI.

Gilles Soulat1, Patrick McCarthy2, Michael Markl1,3

  • 1Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA;

Annual Review of Biomedical Engineering
|March 11, 2020
PubMed
Summary
This summary is machine-generated.

Magnetic resonance imaging (MRI) is vital for assessing cardiovascular disease. Four-dimensional flow MRI (4D flow MRI) offers comprehensive 3D hemodynamic analysis for improved diagnosis in cardiac and vascular conditions.

Keywords:
4D flowblood flowhemodynamicsmagnetic resonance imaging

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Area of Science:

  • Cardiovascular Imaging
  • Medical Physics
  • Hemodynamics

Background:

  • Magnetic resonance imaging (MRI) is crucial for evaluating cardiac and vascular diseases.
  • Quantitative flow imaging via MRI is a standard for assessing blood flow abnormalities in cardiovascular disease.
  • Recent advancements include 4D flow MRI, offering comprehensive 3D hemodynamic visualization.

Purpose of the Study:

  • To provide an overview of 4D flow MRI applications.
  • To highlight the use of 4D flow MRI in cardiothoracic and cerebrovascular diseases.
  • To demonstrate the comprehensive 3D visualization and quantification of hemodynamics.

Main Methods:

  • Utilizing time-resolved flow imaging with velocity encoding in three directions.
  • Employing three-dimensional (3D) anatomic coverage.
  • Applying 4D flow MRI for hemodynamic assessment.

Main Results:

  • 4D flow MRI enables detailed 3D visualization of blood flow.
  • Quantification of hemodynamics is achievable throughout the circulatory system.
  • The technique is applicable to various cardiac and vascular regions.

Conclusions:

  • 4D flow MRI is a powerful tool for cardiovascular and cerebrovascular disease assessment.
  • It facilitates comprehensive hemodynamic analysis in three dimensions.
  • This technology enhances the understanding and management of circulatory system pathologies.