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11 Cards in this Set
- Front
- Back
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What was the first form of medical imaging?
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X-rays.
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How were "soft structures" in the body first viewed?
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By having the patient ingest vascular/GI contrast media (like barium).
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What are some advantages of ultrasound? Disadvantages?
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Detailed cross-sectional imaging, real-time imaging, good spatial and contrast resolution, no radiation used, low cost/widespread availability, and versatility are all advantages. No major disadvantages (others just have higher resolution).
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What are some advantages of CT scans? Disadvantages?
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Advantages - Great anatomical detail within one breath hold, can now do low-dose screenings.
Disadvantages - Great detail comes at the expense of increased radiation dosage, and cost is an issue. |
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What are some advantages of MRI? Disadvantages?
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Advantages - Great contrast between tissues, better than CT or ultrasound at distinguishing pathologic and normal tissues, and no radiation used.
Disadvantages - Cost. |
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What does "PACS" stand for, and what are they?
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Picture archiving and communication systems. They allow for retrieval of large amounts of digital imaging data.
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What are some advantages of radiographs? Disadvantages?
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Advantages - High resolution, low cost, widely available, familiar technique, good at distinguishing tissues of different densities.
Disadvantages - Difficulty distinguishing between adjacent structures without contrast media. |
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What is fluoroscopy?
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A live image created by an ongoing beam of x-rays.
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What is "angiography," and how is this used?
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It is the imaging of vessels, and is used in imaging and treatment of disease processes.
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What does "nuclear medicine" involve?
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Injecting radioactive, gamma-emitting chemicals into the bloodstream, and using a gamma camera to detect physiological and metabolic function.
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What are some areas where MRI is important?
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Imaging soft tissue around joints, neuroimaging, cardiac, vascular, and abdominal imaging, obstetrical and mammographic imaging.
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