Evaluate Digital Image Characteristics
ARRT Radiography Exam · Flashcards · Application
ARRT RADIOGRAPHY EXAM · FLASHCARDS
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QUESTION
If detected photons increase from
N
N
N
to
4
N
4N
4
N
, how does SNR change (quantum-limited)?
QUESTION
How many gray levels are available with a 10-bit system?
QUESTION
How many gray levels are available with a 12-bit system?
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ANSWER
2
12
=
4096
2^{12}=4096
2
12
=
4096
gray levels. A 12-bit system provides 4096 discrete values, enabling finer gradations in image intensity for improved contrast.
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