Chapter 26 Radiology
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Created by:
DGarcia401 on February 12, 2012
Subjects:
Principles of health and science
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16 terms
Terms | Definitions |
|---|---|
 Angiogram | A radiologic image of both arteries and veins filled with contrast media |
| Arteriogram | A radiologic image of arteries filled with contrast media |
| Atheroma | A fat deposit on the inside of the arterial wall |
| Brachytherapy | One typed of radiation therapy performed by radiation oncologists. It involves using radionuclide sources to treat tumors inside the body |
| Contrast Media | substance that allow internal radiologic images to be view |
| External beam therapy | One type of radiation therapy performed by radiation oncologists. This treatment is usually delivered in daily doses for several weeks. Cobalt 60 is an example of this treatment |
| Fluoroscopy | A radiologic imaging process that projects an X-ray image onto fluorescent screens. it makes possible real-time visual examination of the anatomy. |
| Invasive imaging | Radiologic studies taken from inside the body. It applies to a type of diagnostic test or procedure that requires entry into the body. Virtually every internal organ and blood vessel can be imaged. |
| Modalities | A method of technology. For example, in radiologic imaging, the modalities include general and digital radiography, fluoroscopy, computer tomography, and magnetic resonance. |
| Noninvasive imaging | Radiologic studies taken from outside the body. Noninvasive imaging does not require the use of a contract medium. Examples are images of the chest, skull, fingers, pelvis, extremities, and spine. |
| Radiograph | A two dimensional image on X-ray film |
| Radiopaque | The quality of a substance that prevents the passage of X-rays to a film emulsion or digital imaging plate. Contrast media are radioplaque substances that make the viewing of body parts easier. |
| X-ray | an electromagnetic wave that has a wavelength much shorter than visible light. This shorter wavelength allows X-rays to penetrate objects. |
| Transposition | In radiology, an anatomic abnormality in which organs normally on the left side of the body are present on the right side, and vice versa. |
| Inverse square law | A guide used in determining the safe distance from the source of radiation when radiographs are performed. According to this law, radiation intensity from an X-ray tube or radionuclide varies in inverse proportion to the square of the distance from the source. |
| Collimator | A beam restricting device permanently mounted under an X-ray tube housing. It is an aid to precision when radiograph are performed. |
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