Chapter 36 Flashcards
The assumed constant Kilovolt Peak for diagnostic imaging is?
100kVp
How tall must primary protective barriers be?
7’
The maximum variation in linearity is:
10%
Reproducibility of output intensity should be accurate to within:
5%
T/F: The quality control area of an imaging department would be considered an uncontrolled area.
False
The exposure switch for portable x-ray machines should be on a cord that is at least ___ long.
6’
Radiologic Technologists receive most of their occupational dose from:
fluoroscopic exams
The light localized variable aperture collimator must be accurate to within
2% of the SID.
Which type of dosimeter uses Lithium Fluoride (LiF) as its phosphor?
Thermoluminescent Dosimeter (TLD)
Primary protective barriers must consist of ______ “ of lead or _____ “ of masonry:
1/16
4
T/F: The two types of primary radiation are scatter and leakage.
False
T/F: In fluoroscopy, the x-ray beam intensity at the tabletop should not exceed 2.1 mR/min for each mA of operation at 80 kVp
True
The bucky slot cover should have a total lead equivalent of:
.25mm
T/F: A secondary barrier always has a use factor (U) of 1:
True
A cumulative timer in fluoroscopy should produce an audible or visual signal when _______ of cumulative beam on time has been reached.
5 minutes
