Hepatic artery embolization hepatic artery. The percutaneous Seldinger technique introduces a catheter, which is a thin flexible tube made of medical grade material, into the hepatic artery under radiological control. This approach was developed for metastatic neuroendocrine tumors in the early 1970s. Tumor cells get over 90% of their nutrients from the hepatic artery, while the normal cells of the liver get about 70-80 percent of their nutrients and 50% their oxygen supply from the portal vein, and thus can survive with the hepatic artery effectively blocked. Once the catheter is carefully placed in the artery or in a selected branch, the blood
Adjective in context. Determiners generally do this by indicating definiteness (as in "a" vs. "the"), quantity (as in "one" vs. "some" vs. "many"), or another such property. An adjective acts as the head of an "adjective phrase" or "adjectival phrase" (AP). In the simplest case, an adjective phrase consists solely of the adjective; more complex adjective phrases may contain one or more adverbs modifying the adjective (""very" strong"), or one or more complements (such as "worth "several dollars"", "full "of toys"", or "eager "to please""). In English, attributive adjective phrases that include complements typically follow the noun that they qualify ("an