Even More X-ray Machines

Question 1

Two types of anode targets

Answer 1

Stationary or rotating

Question 2

Which x-ray machines use stationary anodes

Answer 2

Dental or portables (small)

Question 3

Rotating anode targets have a focal track for what purpose

Answer 3

Heat dissipation

Question 4

99% of the energy produced during X-ray photon production is heat. This results in temperatures as high as ________ degrees Celcius on the Anode target.

Answer 4

2200

Question 5

In order to dissipate the heat on the Anode target, the tungsten is surrounded by what metal that is a great heat conductor?

Answer 5

Copper

Question 6

What are the 3 factors that, together, help to dissipate the intense heat from the tungsten that the anode in made of?

Answer 6

1. Copper (heat conductor)
2. Rotation
3. Oil (surrounds tube)
   *Heat Exchangers

Question 7

Which focal spot is larger giving it greater heat capacity?

Answer 7

The actual focal spot (perpendicular)

Question 8

Which focal spot (as seen from the table) is smaller, providing more clarity

Answer 8

The effective focal spot

Question 9

Electrons bounce and return outside of the focal spot

Answer 9

Off focus radiation/ Penumbra

Question 10

A larger focal spot makes photons outside of collimation creating a….

Answer 10

Penumbra/ blurred halo