radio NBDE II random Word Scramble
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Question | Answer |
x-ray has the ______ wavelength and the _____ energy | shortest, highest |
what happens when mA is doubled? | Intensity of the beam doubles |
What controls the penetrating characteristic of an x-ray? | kVp |
What influences resolution? | focal spot size |
What is the first sign of acute radioation exposure? | erythema |
What is the most radioresistant tissue? | nerve and muscle cell |
What is the most sensitive tissue? | hematopoetic cells |
What four factors will affect density? | Increase mA, increase exposure time, decrease object-thickness, decrease target-object distance |
What is the best imaging film for viewing internal derangement of the TMJ? | MRI |
Intensifying screens (increase or decrease) exposure time and (increase or decrease) radiation exposure | decrease, decrease |
How many shades of gray does an 8-bit image have? | 256 |
what are coin tests used for? | detecting light leakage |
T/F. A light radiograph is caused by long processing time. | False |
What is the filter in an x-ray machine made of? | aluminum |
What is the effective dose? | comparison of the radiation risk in humans from different radiographic exams and doses |
collimating an xray beam will increase or decrease penetration? | increase |
Ionizing radioation causes what major biologic damage? | Radiolysis of water molecules |
Electrons flow from anode to cathode or from cathode to anode? | cathode to anode |
What is the penumbra? | Geometric unsharpness with a fuzzy area surrounding the contours of the teeth and osseous tissues |
T/F. An intensifying screen with external x-ray will decrease radiation exposure | True |
What is the function of an oil unit of an x-ray tube housing? | To dissipate heat from the target |
Created by:
xeenie
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