thrombus is either at the entry of the renal vein or within the inferior vena cava (IVC) < 2 cm from the confluence of the renal vein and the IVC. Level II: Thrombus extends within the IVC > 2 cm above the confluence of the renal vein and IVC but still remains below the hepatic veins. Level III: Thrombus involves the intrahepatic IVC. The size of the thrombus ranges from a narrow tail that extends into the IVC to one that fills the lumen and enlarges the IVC.
What are three main types of rockets that power modern spacecrafts? The three kinds of rockets are solid fuel rockets, liquid fuel rockets, and ion powered rockets. Edit
exists and is an alternate of . The earliest form of rockets can be traced back to 13th century China, when Taoist alchemists used black powder to propel projectiles. Rockets were being used by the Mongols and Genghis Khan in their battles in Russia and Eastern Europe by the mid-1240s. The earliest form of rockets can be traced back to 13th century China, when Taoist alchemists used black powder to propel projectiles.