I. Tumor diseases 1. malignant tumors: liver cancer, lung cancer, kidney cancer, pancreatic cancer, rectal cancer, bone tumors, etc.; 2. benign tumors: hepatic hemangioma, liver and kidney cysts, uterine fibroids, etc.; 3. luminal stenosis due to tumors: benign and malignant esophageal and tracheal stenosis and esophageal fistula; benign and malignant biliary obstruction (obstructive jaundice) Non-tumor diseases 1, bone and joint diseases: lumbar disc herniation, ischemic necrosis of the femoral head, vertebral compression fractures caused by vertebral hemangioma, osteoporosis, etc. and vertebral metastatic tumors, etc. 2, vascular lesions: various causes of vascular stenosis, obstruction, aneurysm, arteriovenous fistula and hemangioma, venous thrombosis, etc. 3, non-vascular diseases: infertility due to tubal incompetence, anastomotic scar stenosis due to post-surgery, etc. 4.Hemorrhagic diseases: arterial gastrointestinal bleeding (vomiting blood, blood in stool), hemoptysis caused by pulmonary diseases, bleeding from liver, spleen, kidney and other organs. 5, neurological diseases: cerebral aneurysm, cerebrovascular malformation (AVM) and carotid cavernous sinus fistula (CCF), etc. 6, other diseases: various abscesses, cysts, hypersplenism caused by thrombocytopenia, etc.