Conrad Steven Martin1, Tobias Frauenrath1,
Celal zerdem1, Wolfgang Renz1,2, Thoralf Niendorf1,3
1Berlin Ultrahigh Field
Facility, Max-Delbrueck Center for Molecular Medicine, Berlin, Germany; 2Siemens
Medical Solutions, Siemens, Erlangen, Germany; 3Charit Campus
Buch, Humboldt-University, Experimental & Clinical Research Center
(ECRC), Berlin, Germany
The magnetic forces of fringe magnetic fields of MR systems on ferromagnetic components can impose a severe patient, occupational health and safety hazard. MRI accidents are listed as number 9 of the top 10 risks in modern medicine. With the advent of ultrahigh field MR systems including passively shielded magnet versions, this risk, commonly known as the missile or projectile effect is even more pronounced. A strategy employing magnetic field sensors which can be attached to ferromagnetic objects that are commonly used in a clinical environment is conceptually appealing for the pursuit of reducing the risk of ferromagnetic projectile accidents.
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