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Spiral MR myocardial tagging.

Salome Ryf1, Kraig V Kissinger, Marcus A Spiegel

  • 1Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland.

Magnetic Resonance in Medicine
|February 3, 2004
PubMed
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This study introduces an advanced cardiac MRI technique, complementary spatial modulation of magnetization (CSPAMM) with spiral imaging, for clearer heart imaging. This method achieves high-quality, persistent myocardial tags for better cardiac function assessment.

Area of Science:

  • Cardiovascular Imaging
  • Magnetic Resonance Imaging
  • Biomedical Engineering

Background:

  • Myocardial tagging is crucial for assessing cardiac function.
  • Existing techniques face limitations in spatial or temporal resolution.
  • Complementary spatial modulation of magnetization (CSPAMM) offers potential for improved tagging.

Purpose of the Study:

  • To enhance CSPAMM myocardial tagging using an interleaved spiral imaging sequence.
  • To evaluate the feasibility of achieving high spatial and temporal resolution in cardiac tagging.
  • To assess the persistence and quality of tags throughout the cardiac cycle.

Main Methods:

  • Implementation of an interleaved spiral imaging sequence with CSPAMM.
  • Acquisition of grid-tagged cardiac images in healthy subjects.

Related Experiment Videos

  • Evaluation of tagline distance and temporal resolution trade-offs.
  • Assessment of tag persistence and image quality.

    • Main Results:

    • Achieved grid-tagged images with a tagline distance as low as 4 mm in a single breath-hold.
    • Obtained high temporal resolution of 77 frames per second with 8-mm grid spacing.
    • Demonstrated high-quality images with tags persisting throughout the entire cardiac cycle.
    • Successfully studied ten healthy adult subjects.

    Conclusions:

    • The novel CSPAMM with interleaved spiral imaging is a feasible and effective technique for cardiac MRI.
    • This approach allows for flexible optimization between spatial resolution and temporal dynamics.
    • High-quality, persistent myocardial tags can be obtained, aiding in detailed cardiac function analysis.