Part 7386910, the PERU Physiol. ECG/Respiratory Unit, is an MRI part that is compatible with Siemens MRI systems. Some of the models include Magnetom Essenza, Magnetom Trio Tim and Magnetom Espree 8CH. View the complete list below. If you have any concerns regarding this part, or any parts, contact our 24/7 technical support team. We’re here to help and want to make sure your imaging equipment is running.