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 phrase English is that an attributive adjective alone generally precedes the noun, e.g. "a proud man", whereas a head-initial or head-medial adjective phrase follows its noun, e.g. "a man proud of his children". A predicative adjective (phrase), in contrast, appears outside of the noun phrase that it describes, usually after a linking verb, e.g. "The man is proud of his children". There is a tendency to call a phrase an "adjectival phrase" when that phrase is functioning like an adjective phrase, but is not actually headed by an adjective. For example, in "Mr Clinton is a man of wealth", the prepositional