You may know about medication in medicine, surgery in surgery, and radiation therapy in radiotherapy …… but you may not have heard of interventional therapy. What is interventional therapy? Interventional therapy is a minimally invasive treatment using modern high-tech means – that is, under the guidance of medical imaging equipment (such as X-ray fluoroscopy, CT localization, B-mode ultrasound, etc.), special catheters, guide wires and other precision instruments are introduced into the human body to diagnose and locally treat internal pathologies. Interventional therapy applies digital technology to expand the doctor’s field of vision, with the help of catheters and guide wires to extend the doctor’s hands, and its incision (puncture point), which is only the size of a grain of rice, without having to cut through the human body’s tissues, can treat many diseases that could not be treated in the past, and which must be operated on or have poor efficacy of internal medicine treatments, such as tumors, hemangiomas, and various kinds of bleeding. At present, interventionalists have been able to “intervene” catheters or instruments into almost all the branches of blood vessels, the digestive tract and other specific parts of the human body, and apply them to the treatment of diseases. It is one of the emerging medical disciplines with the fastest speed of development and popularization and the widest application.