screens

Question 1

How many screens in a cassette

Answer 1

Two

Question 2

Screens contain a phosphorescent later t/f?

Answer 2

T

Question 3

How many emulsion layers does film have?

Answer 3

Two, one on each side of the polyester base.

Question 4

99% of the x ray image is formed by what?

Answer 4

The screen light

Question 5

What is emission of light from a substance bombarded by radiation?

Answer 5

Luminescence

Question 6

Florescence is the process of?

Answer 6

Glowing only while being excited (during irradiation)

Question 7

When will florescence stop glowing?

Answer 7

At the completion of xray exposure.

Question 8

What is phosphoresce?

Answer 8

Afterglow

Question 9

What is radioparent?

Answer 9

Not have a habit of absorbing x rays

Question 10

Reflective later of screens is made of what?

Answer 10

Titanium dioxide

Question 11

Gadolinium, lanthanum, and yttrium are what?

Answer 11

Rare earth phosphors and see about 4x more efficient than old calcium tungstate tech

Question 12

Screen speed of 400 is how many x100

Answer 12

4

Question 13

Thicker phosphors layers and larger crystals in the phosphors create faster screens but result in what?

Answer 13

Lower detail than thinner layers and smaller crystals.

Question 14

Adjusting mas for changing screen speed is done by:

Answer 14

Speed1/speed 2 x mas1=mas2

Question 15

How often should screens be cleaned?

Answer 15

Monthly unless a busy practice then more often.