Magnetic resonance imaging in children with implants.

Area of Science:

• Radiology
• Medical Imaging
• Biomedical Engineering

Background:

• Increasing access to pediatric MRI necessitates understanding of associated safety protocols.
• Interactions between MRI components (magnetic fields, gradient systems, RF coils) and implants can cause severe patient harm.
• Radiologists must be proficient in identifying implant safety classifications: MRI-safe, conditional, unsafe, or unknown.

Purpose of the Study:

• To review essential MRI safety principles for pediatric patients with medical and non-medical implants.
• To guide radiologists in the risk triage and management of various pediatric implants during MRI examinations.
• To highlight critical considerations for ensuring patient safety in complex pediatric MRI scenarios.

Main Methods:

• Review of established MRI safety guidelines and principles.
• Analysis of interactions between MRI systems and common pediatric implants.
• Discussion of risk assessment strategies and management protocols for implants.
• Identification of high-yield considerations for challenging patient populations and implant scenarios.

Main Results:

• Categorization of implants into MRI-safe, conditional, unsafe, or unknown is the primary risk triage step.
• Strict adherence to manufacturer specifications for MRI-conditional implants is paramount.
• Unknown implants should be treated as MR-unsafe to ensure patient safety.
• Common pediatric implants reviewed include VP shunts, orthopedic hardware, pacemakers, and cochlear implants.

Conclusions:

• A thorough understanding of MRI safety is essential for radiologists performing pediatric imaging.
• Systematic risk assessment and adherence to guidelines are critical for managing patients with implants.
• Special considerations are needed for non-communicative patients and unknown implants to prevent adverse events.