Instrumentation and Quality Assurance
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| show | increases contrast but increases patient dose
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| show | rhodium target with rhodium filtration
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| The material used for the exit port of the mammography tube is necessary because | show 🗑
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| The intensity of the x-ray beam from the cathode side of the tube is generally higher because | show 🗑
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| The design of the lip of the compression paddle (both height and angle along the chest wall) affects all of the following | show 🗑
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| The primary goal of compression is to | show 🗑
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| AEC failure, resulting in an underexposed radiograph, can be caused by | show 🗑
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| Most AEC circuitry in modern mammographic imaging has at least three detectors. Three or more detectors are recommended because | show 🗑
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| show | grids used in general radiography have higher ratios
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| As the size of the x-ray field decreases, to maintain a constant image density the exposure will | show 🗑
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| The chest wall edge of the compression paddle should be aligned just beyond the chest wall edge of the IR to | show 🗑
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| Which of the following affects focal spot size? | show 🗑
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| show | 0.3 mm
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| Which of the following characteristics are unique to mammography cassettes? | show 🗑
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| Two main disadvantages of extended processing are | show 🗑
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| show | a detector and electronic system
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| The greatest difference between digital technology and conventional mammography imaging is | show 🗑
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| All of the following are characteristics of double emulsion film/screens combination. Which characteristic makes these systems undesirable in mammography use? | show 🗑
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| Film fog is best demonstrated on the characteristic curve as | show 🗑
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| The characteristic curve, obtained by plotting density values from a sensitometer, can be used to assess all of the following exvept: | show 🗑
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| show | -film A is faster than film B
-at any optical density, film A will require less exposure than film B
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| show | visual checklist
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| Adequate "air bleed time" refers to the | show 🗑
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| show | screen cleanliness
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| The criteria to pass the ACR Mammography Accreditation on conventional phantom imaging require a minimum of ___ masses. | show 🗑
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| In establishing processing quality control operating levels, the speed index is designated as the density | show 🗑
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| For the daily quality control testing, the base-plus-fog level should remain within | show 🗑
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| show | a mammographer notices dust artifacts on the image
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| Before processing the sensitometric strip each day, the mammographer should | show 🗑
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| show | less than 1.20
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| In the darkroom fog test, the optical density difference between fogged and unfogged areas of the film should not exceed | show 🗑
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| show | using the same film emulsion batch
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| show | return the cassette to clinical use
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| One of the two reasons towels are used in the compression test is to | show 🗑
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| For the repeat analysis to be meaningful, a patient volume of at least ___ patients is needed. | show 🗑
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| show | using the sensitometer to measure the densities on the strip
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| Proving that a darkroom fog failure is a result of safelight problems involves | show 🗑
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| The darkroom fog test is performed | show 🗑
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| show | -determine the film speed
-check the film contrast
-check the stability of the processor
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| If, after examining a phantom image, the number of visualized fibers of masses has changed significantly, the next step is to | show 🗑
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| Repeated films are | show 🗑
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| If the patient volume at a mammography site is 200 patients per week, the repeat/reject analysis should be done every | show 🗑
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| All the fluorescent tubes in the mammography view box should be replaced at the same time because | show 🗑
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| In imaging the phantom, the technical factors used should be the same as those used clinically for a __-cm-thick breast of medium glandularity. | show 🗑
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| Mammography facilities can receive certification from | show 🗑
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| show | 3 years
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| show | correct or replace the item
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| show | dry laser technology
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| Hardcopy viewing of the digital imaging describes | show 🗑
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| The grid ratio can vary in modern mammography units. A common grid ratio used is | show 🗑
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