With the development of interventional radiology, angiography has become an important clinical diagnostic method, especially in interventional therapy. Angiography plays an important role in the diagnosis and treatment of head and neck diseases, central nervous system diseases, cardiovascular diseases, tumors and peripheral vascular diseases.
Specific operation
In order to complete the examination under the best sanitary conditions, you must lay a disinfection sheet next to the examination bed. Nurses and doctors must be present during the whole examination. After local inguinal anesthesia, insert a fine needle into the artery. The guide wire is inserted into the blood vessel through a fine needle. The function of guide wire is to guide the synthetic catheter to the required position under exposure. By injecting contrast agent containing iodine through catheter, the blood vessels of different organs can be displayed. After taking out the catheter, compress the puncture site with bandages and dressings to stop bleeding.
Angiography usually refers to Digital Subtraction Angiography (DSA), which refers to the technology of using computer to process digital image information, eliminate bone and soft tissue images, and make blood vessels clearly displayed. Nuldelman obtained the first DSA image in 1977, which has been widely used in clinic, replacing the older generation of non-subtraction angiography.
In recent years, the development of flat-panel DSA is getting faster and faster, and the image quality and the safety of doctors and patients are constantly improving. A new generation of diagnostic equipment, represented by Siemens Artis zee series digital flat-panel DSA, has emerged, which provides a new digital technology for clinical cardiovascular diagnosis and treatment.