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Biopsy markers
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Biopsy site marker clips are placed in the tissue to mark the biopsy site after an MRI (Magnetic Resonance Imaging) scan. The marker clip is most frequently made from Nitinol. Nitinol is an elastic alloy made from titanium and nickel. Nickel allergy is well recognised in medicine and its use is tightly controlled. Titanium dioxide provides a coating, which protects the patient from nickel but does expose patients to titanium.

 

Nitinol is visible on MRI scans and the clips are not removed.

 

There have been reports of patients developing allergies to these clips

 

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