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Real-time magnetic resonance imaging (RT-MRI) captures dynamic body processes without synchronization. This advanced MRI technique is crucial for diagnosing conditions in moving organs and guiding interventions.

Keywords:
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Area of Science:

  • Medical Imaging
  • Radiology
  • Biomedical Engineering

Background:

  • Real-time magnetic resonance imaging (RT-MRI) enables imaging of dynamic physiological processes as they happen.
  • Modern MRI advancements like fast-switching gradients and parallel imaging are key enablers for RT-MRI.
  • RT-MRI is compatible with various MRI sequences, including spoiled gradient echo and balanced steady-state free precession.

Purpose of the Study:

  • To review the historical development of RT-MRI.
  • To discuss the fundamental trade-offs and enabling technologies of RT-MRI.
  • To explore established applications and current trends in RT-MRI for diagnostics and interventional guidance.

Main Methods:

  • Review of existing literature and technological advancements in RT-MRI.
  • Analysis of RT-MRI's compatibility with different imaging sequences.
  • Evaluation of RT-MRI's utility in diagnostic imaging and image-guided procedures.

Main Results:

  • RT-MRI plays a significant role in diagnostic imaging and image guidance for invasive procedures.
  • Its diagnostic value is particularly high for body parts with significant, irregular motion (heart, GI tract, vocal tract, joints).
  • RT-MRI is beneficial for interventional guidance requiring diverse soft-tissue contrast and flow information.

Conclusions:

  • RT-MRI is a valuable tool for imaging dynamic processes without synchronization.
  • Established applications span diagnostics in moving organs and guidance in interventional procedures.
  • Ongoing technological trends continue to expand the capabilities and applications of RT-MRI.