Staging and Prognosis of Deep Venous Thrombosis of Lower Extremities

Deep venous thrombosis (DVT) is a venous reflux disorder caused by abnormal coagulation of blood in the deep vein, which usually occurs in the lower extremities. After thrombosis, venous valve function is often destroyed, causing lower limb swelling, ulcers and other congestive diseases, affecting the quality of life of patients; thrombus shedding is also easy to cause pulmonary embolism, serious cases can lead to sudden death. Therefore, the accurate diagnosis and curative effect evaluation of DVT are of great significance to the prognosis of patients. At present, the treatment of DVT includes systematic thrombolysis and catheter contact thrombolysis, among which oral drug thrombolysis has certain advantages in clinical application. However, in the process of thrombosis, the composition of thrombus is different in different periods, thus, defining the staging of thrombus plays an important role in the decision-making of drug treatment. In view of the high resolution of magnetic resonance imaging of soft tissue, thrombus can be directly imaged. Therefore, this project will take the staging diagnosis of deep venous thrombosis as the starting point. Through the development of magnetic resonance imaging, this paper tries to solve the problem of evaluating the therapeutic effect of deep venous thrombosis in clinic.