PT  - JOURNAL ARTICLE
AU  - R L Becker
AU  - J F Norfray
AU  - G P Teitelbaum
AU  - W G Bradley, Jr
AU  - J B Jacobs
AU  - L Wacaser
AU  - R L Rieman
TI  - MR imaging in patients with intracranial aneurysm clips.
DP  - 1988 Sep 01
TA  - American Journal of Neuroradiology
PG  - 885--889
VI  - 9
IP  - 5
4099  - http://www.ajnr.org/content/9/5/885.short
4100  - http://www.ajnr.org/content/9/5/885.full
SO  - Am. J. Neuroradiol.1988 Sep 01; 9
AB  - Four patients with intracranial aneurysm clips made from a variety of alloys were studied without incidence by MR imaging at field strengths ranging from 0.35 to 0.6 T. Knowledge of the type of alloy used in the manufacturing of an aneurysm clip is important in determining whether the clip will or will not deflect in a magnetic field. Ferromagnetic clips show deflection and torque in a magnetic field and have the potential to dislodge from the aneurysm. Nonferromagnetic or weakly ferromagnetic aneurysm clips such as the Sugita (Elgiloy), Yasargil (316 LVM stainless steel), Heifetz (Elgiloy), Yasargil (Phynox), and Vari-Angle McFadden (MP35N) do not deflect or deflect weakly in the magnetic field and therefore would not be expected to dislodge during MR. The option of imaging many patients with intracranial aneurysm clips with MR extends the usefulness of the technique to a previously excluded population.