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Med Term Ch 20
Vocabulary
| Question | Answer |
|---|---|
| Cineradiography | Use of motion picture techniques to record a series of x-ray images during fluoroscopy. |
| Comuted tomography | Diagnostic x-ray procedure whereby a cross-section image of a specific body segment is produced; also known as computed axial tomography. |
| Contrast studies | Materials are injected to obtain contrast with surrounding tissue when shown on the x-ray film. |
| Flourescence | Emission of glowing loght that results from exposure to and absorption of radiation from x-rays. |
| Fluoroscopy | process of using x-rays to produce a fluprescent image on an image intensifier. |
| Gamma camera | Machine to detect radiopharmaceuticals in the body for diagnostic purposes. |
| Gamma rays | High-energy rays emitted by radioactive substances. |
| Half-life | Time required for a radioactive substance to lose half its radioactivity by disintegration. |
| Interventional radiology | Therapeutic procedures that are performed by radiologist. |
| In vitro | A process, test, or procedure in which something is measured or observed outside a living organism. |
| In vivo | A process, test, or procedure in which something is measured or observed in a living organism. |
| Ionization | Transformation of electronically neutral substances into electrically charged ones. |
| Labeled compound | Radiopharmaceutical. |
| Magnetic Resonance (MR) | A magnetic field and radio waves are used to form sagittal, coronal, and axial images of the body. |
| Nuclear medicine | Medical specialty that studiesthe uses of radioactive substances (radionuclides) in diagnosis of disease. |
| Radioimmunoassay | Test that combines the use of radioactive chemicals and antibodies to detect minute quantities of substances in a patient’s blood. |
| Radioisotope | Radioactive form of a substance; radionuclide. |
| Radiology | Medical specialty concerned with the study of x-rays and their use in the diagnosis of disease; includes other forms of energy, such as ultrasound and magnetic waves. |
| Radiolucent | Permitting the passage of most x-rays, appears black on x-ray film. |
| Radionuclide | Radioactive chemical element that gives off energy in the form of radiation. |
| Radiopaque | Obstructing the passage of x-rays, appears white on the x-ray film. |
| Radiopharmaceutical | Radioactive drug that is administered safely for diagnostic purposes. |
| Roentgenology | Study of x-rays; radiology |
| Scintigraphy | Production of two-dimensional images of the distribution of radioactivity in tissues after the administration of a radiopharmaceutical imaging agent. |
| Single-photon emission computed tomography (SPECT) | Radio tracer substance is injected intravenously and a computer is used to create a three-dimensional image. |
| Tagging | Attaching a radionuclide to a chemical and following its course in the body. |
| Tracer studies | Radionuclides are used as tags, or labels, attached to chemicals and followed as they migrate through the body. |
| Transducer | Handheld device that sends and receives ultrasound signals. |
| Uptake | Rate of absorption of a radionuclide into an organ or tissue. |
| Ventilation/perfusion studies | Radiopharmaceutical is inhaled and injected and its passage thorough the respiratory tract is imaged. |
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