Category: R

Absorbing and blocking radiant energy, e.g. X-rays. Having the property of absorbing, and therefore being opaque to, X-rays. Radio-opaque materials, many of them containing iodine, are used as contrast media in radiography. Barium salts are also radio-opaque and used in barium ‘meals’ and enemas for the investigation of the digestive tract by X-rays. Substances which…

An element which gives out radiation. A type of radioactive substance made up of atoms that disintegrate, emitting electromagnetic radiation. An isotope (or nuclide) that undergoes radioactive decay. A radioactive isotope used in a scanning technique of body tissues. Different types of tissue and normal or abnormal tissues absorb varying amounts of the isotopes; these…

Referring to a drug or chemical which produces similar effects to those of radiation, e.g. the nitrogen mustard group of chemicals used in chemotherapy. Imitating the biological effects of radiation. Alkylating agents are examples of substances with this property.  

The work of examining the internal parts of the body by taking X-ray photographs. General medical term for the use of radiation or X-RAYS, either in still pictures, as in a chest X-ray, or in moving images, as in fluoroscopy, to give a picture of the internal workings of the body. Some kinds of radiography…

A person specially trained to operate a machine to take X-ray photographs or radiographs. Also called diagnostic radiographer. A person specially trained ‘to use X-rays or radioactive isotopes in the treatment of patients. A person trained in the technique of taking X-ray pictures of parts of the body. An allied health professional for whom the…

An X-ray diagnosis.  

Inflammation of the skin caused by exposure to radiation. Inflammation of the skin after its exposure to ionizing radiation. This may occur after a short dose of heavy radiation (radiotherapy or atomic explosions) or to prolonged exposure to small doses, as may happen accidentally to X-ray workers. The skin becomes dry, hairless, and atrophied, losing…

The joint where the radius articulates with the scaphoid, one of the carpal bones. The articular surface that joins the head of the radius and the bones of the wrist.  

The scientific study of radiation and its effects on living things. The branch of biology that deals with the effects of ionizing radiation on living organisms. Within the realm of biological sciences, there exists a specialized field known as radiation biology. This branch of study is concerned with comprehending and examining the impacts of radiation…

A doctor who specialises in radiobiology.