The Spes Medica Disposable MR/CT EEG Cup Electrodes are intended to be left in place during MR imaging at 1.5T and 3T, as well as during CT scanning. The MR/CT Connection Cable must be disconnected from the electrodes before scanning and MUST remain disconnected throughout the entire MR/CT scan. EEG or EP should not be recorded during the entire MRI or CT scan. Color-coded connectors enable quick disconnection and reconnection of the electrodes, eliminating the need to completely remove electrodes from the patient's skin when the patient goes in for an MRI or CT scan. These electrodes must be used with their dedicated connection cable, which is included.