Production Of Xrays

Question 1

2 physical characteristics of electromagnetic radiation

Answer 1

Particles & waves

Question 2

Wavelength

Answer 2

Measured from peak to peak

Question 3

Frequency

Answer 3

Longer wavelength = lower frequency

Question 4

Energy

Answer 4

Short wavelength = higher frequency = more penetration / stronger energy

Question 5

X-rays are produced when:

Answer 5

Fast moving electrons or particulate radiation collide with matter

Question 6

To produce X-rays we need:

Answer 6

• source of electrons
• method of accelerating electrons
• a directed path
• a target
• a tube

Question 7

Focusing cup is made from

Answer 7

Molybdenum

Question 8

Stationary anodes:

Answer 8

Can’t withstand high heat, common in dental / mobile units

Question 9

Rotating anode:

Answer 9

Common in small animal, allows anode to run cooler, disc spins

Question 10

Heel effect

Answer 10

Intensity of X-ray beams are greater towards cathode side

Question 11

Advantages of three phase generators

Answer 11

More power available
X-ray intensity is higher
Greater quality
More efficient

Question 12

What are the three controls on the control panel?

Answer 12

KVP, ma & time.

Question 13

High KVP =

Answer 13

High speed of electrons = higher energy = shorter wavelength = more penetrating power

Question 14

Higher mA =

Answer 14

Hotter filament = more electrons = more X-rays produced