ECT exams are performed using radionuclides, so there is some radiation exposure to family members after the exam because the radionuclides remain in the body. However, if you are around an adult, there is usually no problem and no major harm will occur. Because the radiation dose of the radionuclide used in ECT is now small, but for safety reasons, it is generally recommended that the patient be isolated from others for about two days after the ECT test. It is safer to wait until all the nuclide drugs have been metabolized before contacting others, especially for pregnant women and children who are growing and developing, and to avoid contact with ECT patients. Patients can also drink plenty of water after the test to promote the elimination of radionuclides.