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Cardiovascular MR imaging: pressure-gating using the arterial pressure signal from a conventional ferromagnetic

P M Pattynama1, E T van der Velde, P Steendijk

  • 1Department of Radiology, University Hospital Leiden, The Netherlands.

Magnetic Resonance Imaging
|January 1, 1994
PubMed

Insights

Arterial pressure waves reliably synchronize magnetic resonance (MR) imaging to the cardiac cycle. This safe method, using micromanometer-tip catheters, offers flexibility in timing while preserving pressure-gating benefits.

Area of Science:

  • Cardiovascular imaging
  • Medical physics

Background:

  • Cardiac cycle synchronization is crucial for accurate Magnetic Resonance (MR) imaging.
  • Conventional triggering methods may have limitations or safety concerns.

Purpose of the Study:

  • To evaluate the arterial pressure wave as a novel trigger for cardiac-gated MR imaging.
  • To assess the safety and efficacy of this approach compared to ventricular pressure triggering.

Main Methods:

  • Utilized arterial pressure waveforms to synchronize MR imaging acquisition to the cardiac cycle.
  • Employed a conventional ferromagnetic micromanometer-tip catheter for pressure monitoring.
  • Ensured MR images and pressure readings remained undistorted.

Main Results:

  • The arterial pressure wave served as a reliable trigger for MR imaging synchronization.
  • Micromanometer-tip catheter measurements were undistorted, indicating compatibility with MR imaging.
  • The method allowed for adjustable timing between the trigger and cardiac cycle.

Conclusions:

  • Arterial pressure wave triggering is a safe and effective alternative for cardiac-gated MR imaging.
  • This technique maintains the advantages of pressure-gating while offering enhanced temporal control.
  • Further research can explore its clinical applications in cardiovascular MR.

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