cr/dr

Question 1

what is the plate called in Computed Radiography

Answer 1

Phosphor plate

Question 2

describe Phosphorescence

Answer 2

Energy absorbed is slowly released as light

Question 3

state the 5 steps to CR ?

Answer 3

1.X-rays interact on the phosphor plate and causeexcitation of the electrons within the phosphorlayer (0.1-0.3mm thick

2.Electrons get “trapped” in the phosphor crytals iestay in an excited state

3.A laser (lower frequency photons) is used tostimulate the trapped electrons, enabling themto release the trapped energy as blue lightphotons

4.Emitted photons and location are recorded andconverted into an image

5.Plates are “erased” using intense light so theycan be used again