Instrumentation and Quality Assurance
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| In mammography, selecting extremely low kVp values | show 🗑
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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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| show | -prevents the posterior and axillary fat from overlapping the body of the breast
-allows uniform compression of the posterior breast tissue
-helps to increase structural strength of the compression paddle
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| show | allow uniform penetration of structures within the breast.
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| AEC failure, resulting in an underexposed radiograph, can be caused by | show 🗑
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| show | Multiple detectors allow for maximum variations in breast size and tissue density.
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| The major difference between the general radiography grid and the grid used in mammography is that the | show 🗑
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| show | increase
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| show | avoid projecting the chest wall edge of the paddle on the mammogram.
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| show | angle of the anode
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| In mammography, the commonly used focal spot size for routine work is | show 🗑
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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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| In digital mammography, both the film and cassette can be replaced by | show 🗑
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| show | In digital technology, the final image can be manipulated
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| show | The system has a lower spatial resolution than the single emulsion systems.
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| Film fog is best demonstrated on the characteristic curve as | show 🗑
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| show | to compare the x-ray beam quality with different films
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| The characteristic curve of two films is plotted.The curve of film A is positioned to the left of the curve of film B. | show 🗑
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| Which of the following mammographic quality control tests is performed monthly? | show 🗑
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| show | elapsed time between film loading and exposure
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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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| show | +0.03 of the established levels
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| The screen-cleaning test should be carried out whenever | show 🗑
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| show | check the developer temperature
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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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| In viewing phantom image, which of the following viewing conditions need not apply? | show 🗑
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| In the test for screen contact there were multiple points of small areas (<1 cm in diameter) of poor contact. The corrective action is to | show 🗑
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| show | protect the cassette holder
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| show | 250
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| show | using the sensitometer to measure the densities on the strip
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| show | repeating the test with the safelights off
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| The darkroom fog test is performed | show 🗑
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| Daily processor control is used to | show 🗑
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| show | check the mammography unit or the image processor
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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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| show | 4.0-4.5
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| Mammography facilities can receive certification from | show 🗑
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| show | 3 years
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| If any of the visual checks fail, the first step is to | show 🗑
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| Digital images can be viewed on a computer monitor or printed using | show 🗑
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| show | the image that is sent for interpretation
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| show | 4:1
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