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Related Experiment Videos

Interleaved echo planar phase contrast angiography

G C McKinnon1

  • 1Department of Radiology, University Hospital, Zurich, Switzerland.

Magnetic Resonance in Medicine
|June 1, 1994
PubMed
Summary
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A new rapid 2D multiplanar phase contrast angiography technique uses echo planar imaging for faster, higher-resolution vascular imaging. While promising for clinical use, further improvements are needed, especially for imaging vessels affected by motion.

Area of Science:

  • Medical Imaging
  • Magnetic Resonance Imaging (MRI)
  • Vascular Imaging

Background:

  • Conventional phase contrast magnetic resonance angiography (PC-MRA) is time-consuming.
  • Echo planar imaging (EPI) offers rapid data acquisition but often at lower resolution.
  • Improving the speed and resolution of MRA is crucial for clinical applications.

Purpose of the Study:

  • To present the technical aspects of a novel rapid 2D multiplanar phase contrast angiographic sequence.
  • To evaluate the potential of combining multiple excitation echo planar imaging (EPI) with phase contrast (PC) for enhanced MRA.
  • To assess the trade-offs between speed, resolution, and clinical applicability.

Main Methods:

  • Development of a 2D multiplanar phase contrast sequence incorporating multiple excitation EPI concepts.

Related Experiment Videos

  • Comparison of resolution capabilities with single-shot EPI.
  • Integration of phase contrast measurements within the EPI framework to reduce acquisition time.

    • Main Results:

    • The novel sequence achieves higher resolution compared to single-shot EPI by utilizing multiple excitations.
    • Combining PC measurements with EPI significantly reduces overall measurement time compared to conventional PC-MRA.
    • The current implementation requires further optimization for routine clinical use.

    Conclusions:

    • The presented rapid 2D multiplanar PC-MRA sequence demonstrates potential for faster and higher-resolution vascular imaging.
    • Further technical development is necessary to overcome limitations and enable clinical translation.
    • Future advancements may allow for successful angiograms of vessels affected by respiratory motion.