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Related Experiment Videos

Cardiovascular disease: evaluation with MR phase imaging.

W M Rumancik1, D P Naidich, R Chandra

  • 1Department of Radiology, New York University Medical Center, New York.

Radiology
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

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Magnetic resonance phase imaging differentiates blood flow from thrombosis. Comparing phase and magnitude images accurately identifies cardiovascular abnormalities, unlike magnitude images alone.

Area of Science:

  • Cardiovascular Imaging
  • Medical Physics
  • Radiology

Background:

  • Conventional spin-echo (SE) magnetic resonance (MR) imaging provides magnitude and phase images.
  • Phase images reflect proton movement associated with blood flow.
  • Distinguishing thrombus from flow-related signals using conventional MR can be challenging.

Purpose of the Study:

  • To evaluate the utility of SE magnetic resonance phase imaging in differentiating cardiovascular abnormalities.
  • To compare the diagnostic accuracy of SE magnitude and phase imaging in identifying thrombus versus flow.

Main Methods:

  • Retrospective evaluation of SE magnitude and phase images from 21 patients with potential cardiovascular abnormalities.
  • Analysis of intracardiac and intravascular signals detected in patients.

Related Experiment Videos

  • Comparison of signal characteristics in phase and magnitude images to differentiate thrombus from flow.

    • Main Results:

    • SE phase images successfully differentiated thrombosis (six cases) from flow-related signals (15 cases).
    • Thrombosis showed no phase shift in areas of increased signal intensity on magnitude images.
    • SE magnitude images alone were insufficient for accurate differentiation between thrombus and flow-related enhancement.

    Conclusions:

    • Magnetic resonance phase imaging is a valuable tool for differentiating intravascular thrombus from flow-related signals.
    • Phase imaging enhances diagnostic confidence in evaluating cardiovascular abnormalities.
    • SE phase imaging improves the characterization of intracardiac and intravascular findings.