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Left ventricular function: MRI assessment.

E Di Cesare1, A Catalucci, C Masciocchi

  • 1Cattedra di Radiologia, Università di L'Aquila, Italy.

Rays
|June 8, 1999
PubMed
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Magnetic resonance imaging (MRI) offers superior cardiac volume and ejection fraction (EF) assessment compared to biplane left ventricular (LV) angiography. Faster MRI techniques like echoplanar imaging (EPI) reduce scan times for essential cardiac function evaluation.

Area of Science:

  • Cardiovascular Imaging
  • Medical Physics
  • Diagnostic Radiology

Background:

  • Biplane left ventricular (LV) angiography is the traditional standard for measuring LV volumes and ejection fraction (EF), relying on geometric models from 2D data.
  • Magnetic resonance imaging (MRI) provides superior contrast resolution and direct, non-geometric analysis of ventricular volumes and mass.
  • Standard cine MRI acquisition and measurement can be time-consuming, necessitating faster methods for clinical utility.

Purpose of the Study:

  • To analyze modalities for evaluating LV measurements and functional parameters.
  • To compare the efficacy of different cardiac MRI acquisition techniques, including echoplanar imaging (EPI).
  • To assess the role of MRI in evaluating cardiac linear parameters, areas, volumes, and mass for diagnosing heart diseases.

Related Experiment Videos

Main Methods:

  • Review and analysis of various MRI techniques for cardiac assessment.
  • Comparison of MRI with biplane left ventricular (LV) angiography as the standard of reference.
  • Evaluation of accelerated MRI sequences, including breath-hold cine MRI and non-gated echoplanar imaging (EPI).

Main Results:

  • MRI offers direct, non-geometric analysis of cardiac volumes and mass with high contrast resolution, surpassing traditional angiography.
  • Accelerated MRI techniques, such as breath-hold cine MRI and EPI, significantly reduce acquisition time from minutes to seconds.
  • Accurate assessment of LV linear parameters, areas, volumes, and mass is crucial for diagnosing cardiac diseases and evaluating ventricular function.

Conclusions:

  • MRI is the preferred modality for accurate cardiac volume and mass assessment, overcoming the geometric assumptions of angiography.
  • Faster MRI sequences like EPI enhance clinical feasibility by reducing scan times.
  • Comprehensive cardiac MRI evaluation is essential for diagnosing heart conditions and assessing ventricular function.