Percutaneous hepatic perfusion Percutaneous hepatic perfusion Percutaneous hepatic perfusion (PHP) is a regionalized, minimally-invasive approach to cancer treatment currently undergoing Phase II and Phase III clinical testing. PHP treats a variety of hepatic tumors by isolating the liver and exposing the organ to high-dose chemotherapy. As demonstrated in clinical trials, patients treated by PHP can tolerate much higher doses of chemotherapeutic agents than those receiving traditional systemic chemotherapy without increased toxicities. Using a system of catheters and filters, PHP isolates the liver from the circulatory system and infuses a chemotherapeutic agent directly to the liver via the hepatic artery. The venous effluent from
Adjective phrase "private" placed in post-object position only creates one interpretation. The structure of adjective phrases (and of all other phrase types) can be represented using tree structures. There are two modern conventions for doing this, constituency-based trees of phrase structure grammars and dependency-based trees of dependency grammars. Both types of trees are produced here. The important aspect of these tree structures—regardless of whether one uses constituency or dependency to show the structure of phrases—is that they are identified as adjective phrases by the label on the top node of each tree. The following trees illustrate head-final adjective phrases, i.e. adjective phrases