Screens Flashcards
1
Q
Conversion Efficiency (CE)
A
measure of how efficient the phosphor is at converting xray photon energy to light
2
Q
Absorption Efficiency
A
measure of how effective the phosphor is at absorbing xray photons
3
Q
Detective Quantum Efficiency (DQE)
A
A measure of a receptor’s ability to create an output signal that accurately represents the input signal (x-ray beam)
4
Q
Image Receptor
A
medium that transforms x-ray beam into visible image
5
Q
Useful beam
A
Emerges from tube housing, uniformly distributed
6
Q
Remnant beam
A
X-rays that remain after useful beam exits the patient
7
Q
Image Forming X-rays
A
Those that interact with the image receptor to form an image
8
Q
What materials can the phosphor layer be made out of?
A
- CaW (original material)
- Gadolinium, Lanthanum, Yttrium, Barium, and Cesium Iodide
