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  • Title: Placement of a ferromagnetic intracerebral aneurysm clip in a magnetic field with a fatal outcome.
    Author: Klucznik RP, Carrier DA, Pyka R, Haid RW.
    Journal: Radiology; 1993 Jun; 187(3):855-6. PubMed ID: 8497645.
    Abstract:
    Magnetic resonance (MR) imaging may be contraindicated in patients with biomedical devices, among the most dangerous of which are intracranial aneurysm clips, owing to the possibility of torque and dislodgement. A case is presented in which a patient with a reportedly nonferromagnetic clip was placed in a magnetic field. The patient developed an acute intracerebral hemorrhage in the MR unit, with a fatal outcome. Imaging studies strongly suggested a torqued clip as the cause. Autopsy revealed a torn middle cerebral artery from clip movement, and the clip was identified as a ferromagnetic type. This is the first reported case, to the authors' knowledge, of a fatal outcome due to an intracranial aneurysm clip placed in a magnetic field.
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