Image quality Flashcards
1
Q
The most important lesion characteristic
A
Atomic number of the lesion
2
Q
K-edge of Barium
A
37kEV
3
Q
Content of an image that limits the ability to visualize lesions or pathology
A
Noise
4
Q
Presence of anatomical structures that cen inhibit the visibility of lesions
A
Fixed noise
5
Q
Random variations in intensity are known as?
A
mottle
6
Q
random fluctiaions that have a Gaussian-like distribution
A
White noise
7
Q
The dominant source of random noise in most x-ray imaging
A
Quantum mottle
8
Q
The ability of an imaging system to display two adjacent objects as discrete entities
A
Resolution
9
Q
Limiting spatial resolution is half the sampling frequency is reffered to as
A
Nyquist frequency
10
Q
Caused by insufficient sampling and are ubiquitous in digintal medical imaging
A
Aliasing artifacts
