Implantable devices and magnetic resonance imaging

Area of Science:

• Cardiology
• Radiology
• Biomedical Engineering

Background:

• Cardiovascular implantable electronic devices (CIEDs) are increasingly used.
• Magnetic resonance imaging (MRI) offers significant diagnostic advantages without ionizing radiation.
• Traditionally, CIEDs were an absolute contraindication for MRI, limiting patient care.

Purpose of the Study:

• To evaluate the evolving safety of MRI in patients with CIEDs.
• To challenge the traditional paradigm of MRI exclusion in CIED patients.
• To inform clinical practice regarding MRI in the context of modern CIEDs.

Main Methods:

• Review of studies investigating MRI safety in patients with CIEDs.
• Analysis of data regarding 'MR conditional' devices.
• Assessment of safety parameters at 1.5T MRI.

Main Results:

• Studies demonstrate the relative safety of MRI at 1.5T under specific conditions.
• The development and approval of 'MR conditional' CIEDs have advanced safety protocols.
• Evidence suggests CIEDs are no longer an absolute contraindication for MRI.

Conclusions:

• The absolute contraindication of CIEDs for MRI is being redefined.
• MRI can be safely performed in patients with specific CIEDs.
• Clinical practice should adapt to incorporate MRI in CIED patients when appropriate.