Module 3 Flashcards
(17 cards)
Which of the following compression pressures is within the range recommended by the Mammography Quality Standards Act (MQSA)?
10 lbs
20 lbs
35 lbs
55 lbs
35 lbs (25-45lbs)
Reciprocity law failure begins to occur when exposure times exceed ________ second(s).
0.5
0.75
1
2
1
To reduce eye strain and prevent glare, a ________ tint is added to the mammographic film base.
green
blue
red
yellow
blue
A reading of _________ keV’s falls within the range of useful x-rays for mammographic imaging.
15
20
25
30
20
Mammography magnification usually is set at a factor of ________.
- 5
- 5
- 5
- 5
1.5
The safelight filter in a mammography darkroom must correspond to ______ light-sensitive film and must be located at least _______ feet above the work space.
red; 4
green; 4
blue; 3
yellow; 3
green; 4
A temperature of _______ degrees F would be safe for a mammographic darkroom.
60
70
80
90
70
Mammographic film processing is controlled by:
- time
- outdoor humidity
- chemical concentration
1 & 2
1 & 3
2 & 3
1, 2, & 3
1 & 3
__________ acts as a hardener in a mammographic processor.
sodium sulfite
potassium bromide
potassium carbonate
glutaraldehyde
glutaraldehyde
The ________ cycle in film processing removes the undeveloped silver halide crystals from the film & hardens the film for storage.
replenishment
fixer
wash
drying
fixer
An advantage of extended processing of mammographic film is that it:
increases contrast
decreases noise
increases resolution
decreases artifacts
increases contrast
_________ most commonly appear on the leading or trailing edge of a mammogram following processing and are spaced about 1” apart.
roller marks
delay streaks
chatter bands
guide-shoe marks
guide-shoe marks
If the wash cycle is not functioning properly, the processed films will generally have a ________ tint.
brown
yellow
red
green
brown
Poor film-screen contact that produces artifacts can be caused by:
- dirty screens or old cassettes.
- air trapped within a cassette.
- film loaded incorrectly into the cassette.
1 & 2
1 & 3
2 & 3
1, 2, & 3
1, 2, & 3
Static artifacts on mammographic film occur when:
darkroom temperature is too low
darkroom humidity is too low
the film is expired
cassettes are dirty
darkroom humidity is too low
The most common technical problem in mammography is:
overexposure of dense tissue
underexposure of dense tissue
overexposure of fatty tissue
underexposure of fatty tissue
underexposure of dense tissue
Noise can be caused by:
- overexposure
- fast image receptors
- extended processing
1 & 2
1 & 3
2 & 3
1, 2, & 3
2 & 3
