Fluoroscopy operators should use the acquisition, or cine, mode sparingly because
about how many times more radiation per frame is needed to obtain diagnostic
quality images than the fluoroscopy mode?
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15 times more
Older, damaged cells of the corneal epithelium are shed from the eye during blinking
or tearing. The cells is this layer are repopulated how often?
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, 1-2 weeks
What 3 principles are used to manage radiation exposure to patients and healthcare
personnel?
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1. Duration
2. Distance
3. Protection
Which of the following steps usually occurs first in digital subtraction angiography?
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Acquiring the mask image
During fluoroscopy, the image intensifier should be as close to the patient as possible
for what reasons?
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1. Improve image quality
2. Reduce magnification
3. Reduce patient dose
, What are characteristics of a high-quality radiographic image?
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Maximum recorded detail
Optimum patient positioning
Excellent penetration, contrast and density
No motion or removable artifacts
The most common radiography/fluoroscopy (R/F) system configuration contains
what?
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An undertable x-ray tube
When using digital systems, operators tend to increase dose to avoid image noise, a
concept called what?
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Dose Creep
Which factors does the generator alter to maintain the appropriate entrance exposure
at the image receptor that minimizes patient entrance dose?
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about how many times more radiation per frame is needed to obtain diagnostic
quality images than the fluoroscopy mode?
Give this one a try later!
15 times more
Older, damaged cells of the corneal epithelium are shed from the eye during blinking
or tearing. The cells is this layer are repopulated how often?
Give this one a try later!
, 1-2 weeks
What 3 principles are used to manage radiation exposure to patients and healthcare
personnel?
Give this one a try later!
1. Duration
2. Distance
3. Protection
Which of the following steps usually occurs first in digital subtraction angiography?
Give this one a try later!
Acquiring the mask image
During fluoroscopy, the image intensifier should be as close to the patient as possible
for what reasons?
Give this one a try later!
1. Improve image quality
2. Reduce magnification
3. Reduce patient dose
, What are characteristics of a high-quality radiographic image?
Give this one a try later!
Maximum recorded detail
Optimum patient positioning
Excellent penetration, contrast and density
No motion or removable artifacts
The most common radiography/fluoroscopy (R/F) system configuration contains
what?
Give this one a try later!
An undertable x-ray tube
When using digital systems, operators tend to increase dose to avoid image noise, a
concept called what?
Give this one a try later!
Dose Creep
Which factors does the generator alter to maintain the appropriate entrance exposure
at the image receptor that minimizes patient entrance dose?
Give this one a try later!
