Dictionary

Iinterleukins [in ter lou´ kinz] Interleukins are biologicalresponse modifiers. There are many naturally occurringinterleukins, including IL-1 through IL-35. Commonlyabbreviated IL.intern A medical doctor who has completed medical school andis in the first year of additional training.internal radiation Also called interstitial radiation therapyor brachytherapy.interstitial radiation therapy [in ter stish´ al] Sources ofradiation energy are implanted directly into or next to a tumor.Interstitial radiation is a local therapy. Also calledbrachytherapy, intracavitary radiation, radiationimplants, radiation seeding or radioactive pellets.interventricular foramen [in ter ven trik´ you lur • foe ray´ men]The opening through which cerebrospinal fluid flows from thelateral ventricles to the third ventricle. Also called the foramenof Monro.intra-arterial [in trah ar teer’ ee al] Injection into an artery(that supplies a tumor). Commonly abbreviated IA.intracavitary [in trah cav´ ih tair ee] The administration duringsurgery of radiation or chemotherapy directly into a tumor orthe space created when the tumor was removed.intracerebral [in trah seh ree´ bral] Located within the cerebralhemispheres (cerebrum).intracranial [in trah kra´ nee al] Within the skull.intradural [in trah du´ ral] Within the dura mater.intramural research, NCI Research performed by employees ofthe National Cancer Institute at the National Institutes ofHealth. As opposed to extramural research, which is performedby scientists employed by facilities other than NCI, such asuniversities, private clinics and laboratories.intramuscular injection [in trah mus´ ku lar] Injection into amuscle. Abbreviated IM.intra-operative [op´ er-ah-tiv] Occurring during a surgicaloperationintraoperative radiation therapy Radiation treatment aimeddirectly at a tumor during surgery. Abbreviated IORT.intraoperative ultrasound imaging Ultrasonic waves usedduring surgery to determine the depth of the tumor and itsdiameter. Pulsed waves are sent into the brain which thenreflect back to the device. The time it takes for the “echoes” toreturn is measured by a computer and displayed as a TV image.intrathecal injection [in trah thee´ kal] Injection into thesubarachnoid space of the meninges. Usually done by lumbarpuncture.intratumoral injection [in trah too more´ al] Injection into atumor, usually performed during surgery.intravenous injection, IV [in trah vee´ nus] Injection into avein.intraventricular injection [in trah ven trik´ u lar] Injection intoa ventricle.intrinsic brain stem glioma [glee o´ ma] A brain stem gliomagrowing totally within the brain stem. These are diffuse tumors,often a fibrillary or anaplastic astrocytoma or a glioblastoma.invasive [in vay´ siv] Refers to a tumor that infiltrates ordiffuses into healthy tissues.investigator A researcher in a clinical treatment study.investigational new drug A drug approved by the FDA(Food and Drug Administration) for investigational use only.Commonly abbreviated IND.I6263