External fixators are medical devices used to stabilize fractured bones or to correct orthopedic deformities. The compatibility of external fixators with magnetic resonance imaging (MRI) depends on the materials used in their production.
Traditionally, external fixators are made of materials such as stainless steel alloys, titanium alloys, aluminium alloys, composite materials, plastic materials which are generally considered MRI-compatible. Except stainless steel alloys, these materials are not ferromagnetic and do not pose a risk of heating or displacement during an MRI procedure. AISI 304 stainless steel materials are not accepted as MRI Compatible especially for over 2,0 tesla MRI devices. Beside external fixators the screws and pins placed during surgical procedure shall also be evaluated before MRI imaging. However, it’s important to note that the specific design and components of an external fixator can vary, so it’s essential to check with the manufacturer or the healthcare professionals who placed the fixator to confirm its compatibility with MRI.
In some cases, certain components of an external fixator, such as pins or wires, may be made of materials that could cause artifacts in the MRI images. Additionally, the presence of any metal in the body can affect the quality of the MRI images in the surrounding area.
Before undergoing an MRI with an external fixator in place, it’s crucial to inform the healthcare professionals and the MRI technician about the presence of the external fixator and provide details about its materials and components. They can then determine whether the specific external fixator is safe for MRI and take appropriate precautions to ensure the patient’s safety and the quality of the imaging.
Always consult with healthcare professionals and follow their guidance regarding the compatibility of external fixators with MRI to ensure patient safety and the integrity of the diagnostic imaging process.
