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[Safety aspects in interventional MRI]

Arnulf Oppelt1, Ioannis Delakis

  • 1Siemens Medical Solutions, Erlangen.

Zeitschrift Fur Medizinische Physik
|May 11, 2002
PubMed

Insights

Magnetic Resonance Imaging (MRI) enhances minimally invasive surgeries. However, intravascular procedures require careful consideration of MR compatibility and potential risks like burning lesions due to resonant currents.

Area of Science:

  • Medical Imaging
  • Neurosurgery
  • Interventional Radiology

Context:

  • Magnetic Resonance Imaging (MRI) offers superior soft-tissue contrast, driving its increased use in guiding minimally invasive and neurological surgical procedures.
  • Emerging intravascular interventional MRI applications involve introducing guidewires, catheters, and coils into blood vessels.
  • Standard MRI precautions must be augmented with specific attention to MR compatibility, accurate localization of tools, and geometrical distortions.

Purpose:

  • To highlight the growing application of interventional MRI in surgical guidance.
  • To identify critical safety considerations for intravascular interventional MRI procedures.
  • To address the potential risks associated with electrical phenomena in interventional MRI.

Summary:

  • Interventional Magnetic Resonance Imaging (iMRI) is increasingly utilized for surgical guidance due to its excellent soft-tissue contrast.
  • New intravascular procedures using iMRI necessitate careful evaluation of device compatibility, precise tool localization, and potential geometrical distortions.
  • High electric fields and resonant currents at conductor ends in intravascular iMRI pose a risk of thermal injury (burning lesions).

Impact:

  • Enhances the safety and efficacy of minimally invasive and neurological surgeries guided by MRI.
  • Informs the development of safer interventional tools and protocols for intravascular MRI procedures.
  • Contributes to a better understanding of the physics and potential hazards of interventional MRI, particularly in vascular applications.

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