The CMI MCG device has been approved as safe for patients. It is FDA approved for the noninvasive detection and display of the heart's magnetic field created by the electrical currents, and is awaiting FDA approval for the detection of ischemia in chest pain patients. A similar SQUID technology utilized in magnetically shielded rooms has already been FDA approved for localization of epileptic focus. When utilized in this matter it is referred to as MEG (magnetoencephalogram).