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Related Experiment Videos

Single-breathhold 3D-trueFISP cine cardiac imaging.

Bernd A Jung1, Jürgen Hennig, Klaus Scheffler

  • 1Section of Medical Physics, Department of Diagnostic Radiology, University of Freiburg, Germany. bajung@ukl.uni-freiburg.de

Magnetic Resonance in Medicine
|November 6, 2002
PubMed
Summary

This study demonstrates a new 3D TrueFISP cardiac MRI technique for single breathhold volumetric measurements. This method provides accurate cardiac function evaluation, including wall motion and ejection fraction, without contrast agents.

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Area of Science:

  • Cardiovascular Imaging
  • Magnetic Resonance Imaging
  • Cardiac Physiology

Background:

  • Cardiac MRI function measurements traditionally rely on multiple 2D breathhold sequences.
  • Acquiring images of the entire heart often requires several breathholds, limiting patient comfort and data acquisition efficiency.

Purpose of the Study:

  • To demonstrate the feasibility of a cine 3D TrueFISP technique for complete cardiac volumetric measurements within a single breathhold.
  • To evaluate the potential of this technique for rapid and accurate cardiac assessment.

Main Methods:

  • Implementation of an ECG-gated 3D cine TrueFISP sequence.
  • Achieved a repetition time of 2.4-2.8 ms, enabling imaging of the complete heart within a single breathhold.
  • Acquired 8-13 volumes per cardiac cycle with a spatial resolution of approximately 1.5 x 3.5 x 3.5 mm³.

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Main Results:

  • The 3D TrueFISP sequence provided excellent contrast between myocardium and intraventricular cavity without contrast agents.
  • Demonstrated the ability to obtain several complete volumetric measurements during a single breathhold.
  • Acquired complete heart imaging within 20-46 heartbeats.

Conclusions:

  • Breathhold volumetric cine imaging using the 3D TrueFISP technique is feasible.
  • This technique shows promise for rapid and accurate evaluation of cardiac regional wall motion.
  • It facilitates precise calculation of cardiac volume and ejection fraction.