[Intracranial artifact un magnetic resonance caused by embolization of microscopic metallic fragment]

Area of Science:

• Medical Imaging
• Neurology
• Cardiology

Background:

• Magnetic resonance imaging (MRI) artifacts are common findings with various causes.
• Understanding artifact origins is crucial for accurate diagnosis and patient management.

Observation:

• A 72-year-old male presented with left lower limb weakness.
• MRI revealed an acute right posterior cerebral artery infarction.
• A distinct metallic artifact with central signal void and high signal rim was noted in the right frontal lobe.

Findings:

• The metallic artifact was attributed to a small metallic fragment.
• The fragment was likely embolized during aortic valve replacement surgery 12 years prior.

Implications:

• This case underscores the importance of considering prior surgical interventions when interpreting MRI findings.
• Identifying metallic artifacts aids in differentiating them from actual pathology, improving diagnostic accuracy.
• Awareness of potential metallic emboli is vital for neuroimaging specialists and cardiothoracic surgeons.