核医学成像也称放射性核素计算机处理断层摄影或称发射型电脑断层扫描术,简称为E—CT,实际上是应用放射性核素示踪方法的一种数学和物理学技术。它与X—CT不同,X—CT是以X线为外照射源,称穿透显影;E—CT是以注入人体的放射性药物或正电子为放射源、称为放射显影。故可分 Nuclear medicine imaging, also known as radionuclide computerized tomography or emission computed tomography, or E-CT for short, is actually a mathematical and physical technique that uses radionuclide tracing methods. It is different from X-CT, X-CT is the X-ray source of external radiation, said penetrating development; E-CT is injected into the human body of radiopharmaceuticals or positrons as a radioactive source, known as radiographic imaging. It can be divided