MRI-compatible ezPad single-electrodes 4-pack These single electrodes can be used for patients when fixed pads cannot be applied - for example, patients with open wounds. Each pouch contains 4 single electrodes typically needed during an MRI examination with standard MRI monitors. Because they are packed in individual pouches, the electrodes do not dry out like the ones offered in bulk. This allows the facility to reduce electrode waste without compromising electrode quality and monitoring results.