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242- chapters 8-10 questions
Terms in this set (30)
Which of the following is not normally part of an image intensifier tube?
Which material is most often used in the input phosphor of an image intensifier?
Which of the following terms best describes the increase in image brightness resulting from the difference in size between the input and output phosphors?
Which of the following increases the brightness of a fluoroscopic image: (1) an increase in kVp, (2) an increase in mA, or (3) an increase in pulse width?
(all of the above) 1, 2, and 3
Which of the following is the main advantage of using a multifield image intensifier?
magnification option is available
Which of the following terms best describes the type of image intensifier artifact that results from projecting an image onto a flat surface?
Which of the following is not a "tube" type of television camera?
The primary beam should be restricted to the diameter of the input phosphor to within ±_____% of the SID
The video monitor of a fluoroscopic system should be evaluated with a test pattern created by which of the following organizations?
The intensity of the x-ray beam at tabletop should not exceed ____R/min for units that are equipped with ABS
Which of the following is found inside the image receptor used for a CR system?
Which of the following is an advantage of CR vs conventional radiography?
(all of the above)
lower patient dose, higher-contrast resolution, edge enhancement
Which of the following is true in comparing CR vs conventional radiography
collimation and part centering are critical for CR images
Which of the following identifies the fluoroscopic scan mode by which the x-ray tube delivers radiation in short, high-intensity pulses?
pulsed, interlaced scan mode
The standard black-and-white television monitor scans ____ horizontal lines per frame
Types of DSA include (1) temporal mask subtraction, (2) time-interval difference subtraction, and/or (3) dual-energy subtraction
1, 2, and 3
Which of the following devices transfers a hard-copy image from a CRT onto a hard-copy film?
When the framing rate of a cine camera exceeds ____ frames per second, the human eye perceives the images as continuous
The laser used in most CR reader units emits light in this portion of the color spectrum
Which of the following are components of a CR system: (1) image receptors, (2) reader unit, or (3) workstation?
1, 2, and 3
In departments with a quality management program in place, the greatest number of repeat images is due to which of the following?
If a department performs 1160 views during a 1-month period and 132 are repeated, the department repeat rate is which of the following?
Any repeat rate exceeding ____ should be seriously examined.
Which of the following processing artifacts run in the same direction as film travel?
guide shoe marks
Which of the following artifacts can occur in both CR and film/screen radiography?
The types of static artifacts include (1) tree, (2) crown, or (3) smudge:
1, 2, and 3
Which of the following terms best describes the likelihood of obtaining a positive diagnosis in a patient with the disease actually present?
Data for determining repeat rates should include at least ____ patients to obtain a statistical sample large enough for valid results.
Which of the following terms is also referred to as the TP fraction?
Which of the following artifacts occurs as a result of patient motion during exposure?
an exposure artifact
THIS SET IS OFTEN IN FOLDERS WITH...
Film Darkrooms, Processing, and Intro to QA
Equipment operation & quality control
Quality control of radiographic equipment & access…
Digital Radiography (chps 6-12)
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