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