Embolisation is when substances are injected into the liver to try to block the blood flow to the cancer cells. This reduces the supply of oxygen and food to the cancer, which can make it shrink or stop it from growing. In HCC, embolisation is usually given in combination with chemotherapy and is called chemoembolisation. You need to be reasonably well to have this done, and the part of your liver that’s not affected needs to have a good blood supply.
Less commonly, embolisation is done with radiation, called radioembolisation or SIRT. These treatments can be used when the cancer has spread throughout the liver and cannot be removed with surgery or treated with ablation. They are not used if the cancer has spread outside the liver.