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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «R»:

  1. Radiologic Radiologic
    Radiologic: Having to do with radiology. ...
  2. Radiologist Radiologist
    Radiologist: A physician specialized in radiology, the branch of medicine that uses ionizing and nonionizing radiation for the diagnosis and treatment of disease. Like other physicians, a radiologist must have graduated from an accredited medical school or school of osteopathy, passed a licensing...
  3. Radiology Radiology
    Radiology: The branch of medicine that uses ionizing and nonionizing radiation for the diagnosis and treatment of disease. Historically, radiology involved the use of ionizing radiation including X rays for the diagnosis of disease and X rays and gamma rays for the treatment of disease. More re...
  4. Radiology, interventional Radiology, interventional
    Radiology, interventional: The use of image guidance methods to gain access to the deepest interior of most organs and organ systems. Through a galaxy of techniques, interventional radiologists can treat certain conditions through the skin (percutaneously) that might otherwise require surgery....
  5. Radiolucent Radiolucent
    Radiolucent: Anything that permits the penetration and passage of X-rays or other forms of radiation. Radiolucent is as opposed to radiopaque (which refers to anything that blocks the penetration of X-rays). Plastic is usually radiolucent. If a child swallows a radiolucent plastic paperclip, that...
  6. Radiomimetic Radiomimetic
    Radiomimetic: Imitating radiation. A radiomimetic drug is one that imitates the effects of radiation as in the case of chemicals such as nitrogen mustards which are used in cancer chemotherapy. The "mimetic" part of "radiomimetic" comes from the Greek verb "mimeisthai" meaning "to imitate" and from...
  7. Radionuclide Radionuclide
    Radionuclide: An unstable form of a chemical element that radioactively decays, resulting in the emission of nuclear radiation. Also called a radioisotope....
  8. Radionuclide scan Radionuclide scan
    Radionuclide scan: An examination that produces pictures of internal parts of the body. The patient is given an injection or swallows a small amount of radioactive material (a radionuclide). A scanner machine then measures the radioactivity in certain organs. Also called an isotope scan....
  9. Radionuclide stress test Radionuclide stress test
    Radionuclide stress test: A procedure that involves injecting a radioactive isotope, typically thallium or cardiolyte, into the patient's vein after which an image of the patient's heart becomes visible with a special camera. The radioactive isotopes are absorbed by the normal heart muscle. Nucle...
  10. Radiopaque Radiopaque
    Radiopaque: Anything that does not let X-rays or other types of radiation penetrate. Radiopaque objects block radiation. They are opaque to radiation. A metal object, for example, is typically radiopaque. If a child swallows a coin and it goes down into the stomach, it is easily visible in the ...
  11. Radiosensitive Radiosensitive
    Radiosensitive: Sensitive to X-rays and other forms of radiant energy. For example, a tumor may be radiosensitive, and therefore potentially treatable with radiation therapy. The opposite is radioinsensitive....
  12. Radiotherapy Radiotherapy
    Radiotherapy: The treatment of disease with ionizing radiation. Also called radiation therapy. In radiotherapy, high-energy rays are often used to damage cancer cells and stop them from growing and dividing. A specialist in the radiation treatment of cancer is called a radiation oncologist. Like ...
  13. Radiotherapy, stereotactic Radiotherapy, stereotactic
    Radiotherapy, stereotactic: Radiation therapy in which a number of precisely aimed beams of ionizing radiation coming from different directions meet at a specific point, delivering the radiation treatment to that spot....
  14. Radium Radium
    Radium: The celebrated radioactive element discovered by Marie and Pierre Curie in 1898....
  15. Radius Radius
    Radius: In anatomy, the radius is the smaller of the two bones on the thumb side of the forearm. (The bigger one is the ulna). The word "radius" comes unchanged from the Latin meaning a spoke in a wheel which this bone was thought to resemble. The word "radiation" is derived from the same Latin wo...