MT__Chapter_20 - Medical Terminology Chapter 20 Radiology...

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Unformatted text preview: Medical Terminology Chapter 20 Radiology and Nuclear Medicine Radiology The study of X-rays X-rays are invisible waves of energy that are produced by an energy source Nuclear Medicine Studies the characteristics and uses of radioactive substances in the diagnosis of disease Alpha particles Beta particles Gamma rays Characteristics of X-rays Can cause exposure of a photographic plate Can penetrate substances to varying degrees Invisible Travel in a straight line Scattering of radiation Ionization Radiolucentpermits passage of most the x-rays, appears black on image, eg, air in lungs Radioopaquesubstances that absorb most of the x-rays they are exposed to, appear white on image, eg, bone CT or CAT X-rays are beamed at multiple angles through the body, a computer is used to create a cross sectional picture of the body section examined Contrast studies Contrast medium is injected so that 2 structures of similar density side by side can be visualized and distinguished Barium Sulfate Upper GI series Barium enema Angiography...
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MT__Chapter_20 - Medical Terminology Chapter 20 Radiology...

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