Unusual MR metallic artifact due to steel threads

Area of Science:

• Medical Imaging
• Radiology
• Materials Science

Background:

• Metallic objects are known sources of artifact in Magnetic Resonance Imaging (MRI).
• Artifacts can degrade image quality and potentially lead to misdiagnosis.
• Standard protocols often involve screening for metallic implants and accessories.

Observation:

• A patient undergoing MRI examination presented with unexpected and severe image artifacts.
• The artifacts were traced to metallic fibers incorporated into the fabric of surgical scrub pants worn by the patient.
• The metallic fibers, though not overtly visible, interacted with the MRI's magnetic field.

Findings:

• The metallic fibers in the surgical scrub pants generated significant signal distortions and geometric inaccuracies in the MRI scans.
• The pattern of artifacts was consistent with those produced by metallic foreign bodies.
• The presence of these fibers, even when not in direct contact with the skin, was sufficient to cause substantial image degradation.

Implications:

• Patient clothing should be considered a potential source of MRI artifacts, in addition to implants and accessories.
• Radiology departments may need to update screening protocols to include inquiries about clothing materials.
• Awareness of this artifact source can improve diagnostic accuracy and patient safety in MRI examinations.