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9 Cards in this Set

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medical imaging
procedures that allow visualization of strutures inside our bodies
radiograpy
a single barrage of x rays passes through the body, producing an image of interior structures on x ray sensitive film--x ray; inexpensive, quick, simple to perform; bones appear white, hollow structures appear black (examining soft tissues-mamography; bone density-bone densitometry)
magnetic resonance imaging (MRI)
body is exposed to a high-energy magnetic field, which causes protons in body fluids and tissues to arrange themselves in relation to the field; pulse of radio waves "reads" ion patterns & a color-coded image is assembled -- 2 or 3 dimensional blueprint of cellular chemistry. safe--cannot be used on paitiens with metal in their bodies, best for differentiating soft tissues
ultrasound scanning
high-frequency sound waves produced by a handheld wand reflect off body tissues and are detected by the same instrument; image is called a sonogram--noninvasive & painless
radionuclide scanning
a radioactive substance is introduced intravenously into the body and carried by the blood to the tissue to be imaged; gamma rays emitted are detected by a gamma camera outside the subject and fed into a computer--study activity of a tissue or organ
endoscopy
visual examination of the inside of body organs or cavities using a lighted instrument with lenses called an endoscope
colonoscopy
used to examine the interior of the colon
laparoscopy
used to examine the organs within the abdominopelvic cavity
arthroscopy
used to examine the interior of a joint, usually the knees