Interventional radiology is a series of techniques for diagnosis and treatment of various diseases using catheters, guidewires and other devices under the guidance of medical imaging equipment, based on diagnostic imaging and clinical diagnostics, combined with the principles of clinical therapeutics. That is: under the guidance of imaging medicine (DSA, ultrasound, CT, MRI), special catheters or instruments are inserted into the lesion site for diagnostic imaging and treatment or tissue collection for cytology, bacteriology and biochemical examination through the percutaneous puncture route or through the body’s original orifice. FD-20 is the eighth generation of Philips flat panel vascular machine, compared with previous generations, in addition to inheriting its classic 2K*2K image chain, comprehensive dose protection system of forward-looking design, but also integrated many high-tech elements, in the cardiac, neurological, peripheral and joint operating room launched a corresponding tailor-made solutions, these intraoperative practical real-time technology has become the most powerful interventional doctors These intraoperative practical and real-time technologies have become the most powerful helpers for interventionalists. Interventional treatment scope: 1) Angiography of various parts of the body; 2) Treatment of various malignant tumors: liver cancer, gynecological tumors, lung cancer, esophageal cancer, kidney cancer, pancreatic cancer, various metastatic tumors and bone tumors; 3) Embolization of hepatic hemangioma and aspiration and sclerosis of liver and kidney cysts and abscesses; 4) Embolization of various aneurysms and vascular malformations and PTA or stent placement for vascular occlusive diseases; 5) Non-vascular vascular stenosis: esophageal cysts and abscesses Vascular lumen stenosis: benign and malignant esophageal stenosis, gastrointestinal anastomotic stenosis, biliary obstruction stent placement; 6, uterine fibroids, ectopic pregnancy, infertility due to tubal obstruction; 7, percutaneous fine needle aspiration biopsy of various systemic lesions; 8, other: acute hemorrhage in obstetrics and gynecology, bronchial dilatation hemoptysis, femoral head necrosis, hypersplenism, gastrointestinal bleeding, vena cava filter implantation (prevention or treatment of pulmonary infarction). . Contraindications to interventional procedures There are a number of conditions for which interventional therapy is not indicated. These conditions include: severe liver and kidney dysfunction; severe cardiovascular disease; impaired coagulation mechanisms; allergy to contrast agents and anesthetics.