The difference between cT and ECT

CT is the abbreviation of computer X-ray tomography camera, ECT is the abbreviation of isotope emission computer-aided tomography, CT scans a certain part of human body according to a certain thickness, and the difference between ECT and ordinary CT is that the radiation source is in the imaging body. E-CT imaging is to let the human body receive some radioactive drugs, which gather in an organ of the human body or participate in a metabolic process in the body, and then image the concentration distribution and metabolism of radionuclides in organs and tissues.