Term
| sensory evoked potentials |
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Definition
| method of testing the function of sense organs |
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Definition
| visual examination of the interior of a body cavity or organ utilizing a lighted scope |
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Term
| magnetic resonance imaging (MRI) |
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Definition
| use of electromagnetic energy and radio frequencies for identifying abnormalities in anatomical structures |
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Definition
| use of sound vibrations to study alterations of anatomical structures |
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Term
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Definition
| continuous x-ray similar to x-ray generator except has additional screen composed of fluorescent crystals |
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Term
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Definition
| x-ray tube mounted on a portable electic or battery-powered generator that may be moved from room to room |
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Term
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Definition
| amplifies the fluoroscopic optical image projected onto a television screen; is directly under the x-ray tube |
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Term
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Definition
| a table that can be permeable to x-ray |
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Term
| characteristics of CT scans |
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Definition
| 1. uses an x-ray beam in conjuction with computer graphics technology 2. produces a sequential series of positive images of transverse cross sections of organs and anatomical structures 3. x-ray tube and photomultiplier detectors rotate around the patient 180 degrees 4. differences in tissue density are shown in different shades of gray or colors depending on the monitor 5. CT scans present a hazard to the patient from ionizing radiation 6. the procedure is performed under the supervision of the radiologist |
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Term
| characteristics of ultrasonography |
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Definition
| 1. use high frequency electromagnetic waves to produce an image or photograph of an organ or tissue 2. ultrasonic echoes are recorded as they strike tissues of different densities and elasticities 3. the basic component is a specialized transducer 4. water soluble gel is applied to the skin to maintain airtight contact between transducer and skin |
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Term
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Definition
| used for visualization of midiastinum and lymph nodes or tumors |
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Term
| common features of angiographic procedures |
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Definition
| 1. all procedures may be performed under local or general anesthesia 2. a percutaneous puncture may be used to gain access to the vessel(or cutdown) 3. contrast medium doses are calculated according to pt's weight 4. contrast medium may be warmed to body temp 5. pt should be kept informed as the procedure progresses (if local is used)6. an automatic high-pressure injector correlates the injection of the contrast medium and the x-ray exposure 6. automatic seriogram equipment takes rapid multiple exposures while the contrast medium is in sufficient concentration to visualize the vessels |
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