Tissue to Air Ratio — Tissue Air Ratio (TAR) is a term used in radiotherapy treatment planning to help calculate absorbed dose to water in conditions other than those directly measured. Definition The TAR at a point in a water phantom irradiated by a photon beam is… … Wikipedia
Monte Carlo method for photon transport — Modeling photon propagation with Monte Carlo methods is a flexible yet rigorous approach to simulate photon transport. In the method, local rules of photon transport are expressed as probability distributions which describe the step size of… … Wikipedia
Linear no-threshold model — The linear no threshold model (LNT) is a method for predicting the long term, biological damage caused by ionizing radiation and is based on the assumption that the risk is directly proportional to the dose at all dose levels. In other words, the … Wikipedia
i|so|dose — «Y suh DOHS», adjective, noun. –adj. of, having to do with, or representing surfaces or areas receiving equal doses of radiation: »The radiologist is aided in his calculations by an isodose chart superimposed over the patient s body section… … Useful english dictionary
radiation injury — Tissue damage caused by exposure to ionizing radiation. Structures with rapid cell turnover (e.g., skin, stomach or intestinal lining, and bone marrow) are most susceptible. High dose irradiation of the last two causes radiation sickness. Nausea… … Universalium
radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… … Universalium
Radiation poisoning — Radiation poisoning, also called radiation sickness or a creeping dose , is a form of damage to organ tissue due to excessive exposure to ionizing radiation. The term is generally used to refer to acute problems caused by a large dosage of… … Wikipedia
Neutron Capture Therapy of Cancer — Neutron Capture Therapy (NCT) is a noninvasive therapeutic modality for treating locally invasive malignant tumors such as primary brain tumors and recurrent head and neck cancer. It is a two step procedure: first, the patient is injected with a… … Wikipedia
Copper peptide GHK-Cu — IUPAC name 6 amino 2 [[2 [(2 aminoacetyl)amino] 3 (1H imidazol 5 yl)propanoyl]amino]hexanoic acid; copper … Wikipedia
Acute radiation syndrome — Classification and external resources A Japanese girl recovering from the effects of radiation sickness ICD 10 T … Wikipedia
meat processing — Introduction preparation of meat for human consumption. Meat is the common term used to describe the edible portion of animal tissues and any processed or manufactured products prepared from these tissues. Meats are often classified… … Universalium