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Related Concept Videos

Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

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Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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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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Related Experiment Video

Updated: Mar 14, 2026

Quantification of Mouse Heart Left Ventricular Function, Myocardial Strain, and Hemodynamic Forces by Cardiovascular Magnetic Resonance Imaging
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Cloud-processed 4D CMR flow imaging for pulmonary flow quantification.

Raluca G Chelu1, Kevin W Wanambiro2, Albert Hsiao3

  • 1Department of Radiology, Erasmus MC, Rotterdam, The Netherlands; Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands.

European Journal of Radiology
|September 27, 2016
PubMed
Summary
This summary is machine-generated.

Cloud-based cardiac magnetic resonance (CMR) four-dimensional (4D) flow imaging accurately quantifies pulmonary flow. This advanced technique shows strong correlation with traditional 2D phase-contrast methods for flow and regurgitation measurements.

Keywords:
4D CMR flow imagingEddy current correctionFlow visualizationPhase contrastPulmonary regurgitant fraction

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Area of Science:

  • Cardiovascular Imaging
  • Medical Physics
  • Computational Biology

Background:

  • Cardiac magnetic resonance (CMR) four-dimensional (4D) flow imaging offers advanced visualization of blood flow dynamics.
  • Accurate quantification of pulmonary artery flow is crucial for diagnosing and managing various cardiovascular conditions.
  • Correction for imaging artifacts like eddy currents and magnetic field non-linearity is essential for reliable flow measurements.

Purpose of the Study:

  • To evaluate a cloud-based platform for CMR 4D flow imaging with integrated artifact correction.
  • To assess the accuracy of this platform in quantifying pulmonary artery forward flow, regurgitation, and peak systolic velocity.
  • To compare the results obtained from 4D flow imaging with conventional 2D phase-contrast (PC) measurements.

Main Methods:

  • Prospective recruitment of 52 adult patients.
  • Acquisition of both 4D flow and 2D PC data during the same scanning session.
  • Semi-automatic correction of eddy currents using web-based software integrated into the cloud platform.

Main Results:

  • Strong correlation between 4D flow and 2D PC for forward flow (r=0.82) and regurgitant fraction (r=0.85).
  • Mean forward flow: 92 ml/cycle (4D flow) vs. 86 ml/cycle (2D PC).
  • Mean peak systolic velocity showed a higher correlation (r=0.93) but a notable difference, with 4D flow measuring lower (92 cm/s vs. 108 cm/s).

Conclusions:

  • The cloud-based 4D flow imaging platform provides accurate quantification of pulmonary artery flow and regurgitation.
  • The system demonstrates good agreement with established 2D PC techniques.
  • A potential underestimation of peak systolic velocity by 4D flow imaging warrants further investigation.