Exam (elaborations)
AFMAN 41-210.
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Exam of 1 pages for the course 126 MTTC English as a Second Language at 126 MTTC English as a Second Language (AFMAN 41-210.)
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Contrast Resolution, MTF, Bit depthContrast resolution - ANS-ability to distinguish between differences in intensity in an
image.
Bit depth - ANS-the number of bits determines the accuracy with which exit radiation is
recorded.
Increasing the bit depth= - ANS-increase in gray tone= increased resolution
Formula to find bit depth - ANS-2^x
Modulation Transfer Function (MTF) - ANS-ability of an imaging system to deliver
objects of different sizes into an image.
1.0 MTF - ANS-image is exactly the same as object (100%)
.5 MTF - ANS-50% of anatomy recorded
MTF determining factors - ANS-1. SNR
2. Latitude
3. DQE
Signal to Noise Ration - ANS-(SNR)
Noise is useless data.
High SNR= low noise
Increased noise= decreased contrast
Exposure Latitude - ANS-range of acceptable exposure values that can be converted.
DQE - ANS-measure of xray absorption
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