X-Ray Tube

Question 1

Which material lines the inside of the protective tube housing?

Answer 1

Lead

Question 2

What helps to keep the x-ray tube cool inside the protective tube housing?

Answer 2

Cooling fans & oil bath

Question 3

X-Ray tube leakage radiation can be no more than what amount?

Answer 3

100 mR per hour at a distance of one meter

Question 4

The positive end of the x-ray tube.

Answer 4

Anode

Question 5

The negative end of x-ray tube.

Answer 5

Cathode

Question 6

What is the name of the area of the envelope where x-rays exit the tube?

Answer 6

Target Window

Question 7

What are the two types of anode designs?

Answer 7

Stationary & Rotating

Question 8

What material is the core made of in a rotating anode design which uses a disc?

Answer 8

Molybdenum

Question 9

Where is copper found in a rotating anode?

Answer 9

In the shaft

Question 10

What is the atomic number of tungsten?

Answer 10

74

Question 11

Where is the rotor located?

Answer 11

Inside the envelope

Question 12

What material is the rotor made of?

Answer 12

An iron core

Question 13

What is the advantage of using a larger actual focal sport?

Answer 13

Higher exposures can be used

Question 14

Most x-ray tube target angles range between _.

Answer 14

7 and 18 degrees

Question 15

The smaller the anode angle, the _ the effective focal spot.

Answer 15

Smaller

Question 16

What material is the filament primarily made of?

Answer 16

Tungsten

Question 17

What material is the focusing cup made of?

Answer 17

Nickel

Question 18

What material is added to the tungsten of the filament to improve thermionic emission?

Answer 18

Thorium

Question 19

What material used in x-ray production, is boiled off the filament?

Answer 19

Electrons

Question 20

T/F. The oil surrounding the tube helps to dissipate the heat produced during x-ray production

Answer 20

True