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CR Exposure Indicator System
Game Code: 427996
English
15
Public
EI Numbers
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(T or F) Each manufacturer has their own system for the Exposure Indication.
True
15
(T or F) The EI Indicates how much radiation (or exposure) reached the receptor.
True
15
EI numbers are not able to distinguish between exposure amounts being from kVp or mAs
True
15
Outside the manufacturers ranges, an image is under or over exposed, regardless of appearance on screen
True
15
S numbers are (Inversely or proportionally) related to the amount of exposure to the image receptor in mR
inversely
15
Changing your mAs by a factor of 2 (multiply or divide) will change the S# by a factor of _____.
2
15
Properly exposed IP should have S number of 15 - 25.
False (150 - 250)
15
Kodak uses an exposure system, which is the (DI, EI, S or LgM ?) number
EI (Exposure Index)
15
(T or F) Properly exposed images should have an EI ranging from 1,700 – 2,200
True
15
Changing your mAs by a factor of 2 will change the EI by _______.
300
15
LgM stands for _____________.
log median exposure
15
The Higher the LgM #, the ( more or less ) exposure.
more
15
Any changes by a factor of 2, will cause a_____ change in the LgM
0.3
15
(T or F) LgM numbers are typically 1.95 – 2.5
True
15
(T or F) Exposure of the CR plate to light will NOT increase density & may have a minimal impact on the image.
True
15
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