Effects of Intensity (3)

Question 1

What does intensity represent?

Answer 1

the ionizing effect of the radiation on a small volume of air.

Question 2

In gamma ray sources, what is directly proportional to the intensity?

Answer 2

Activity, more rays = more ionization.

Question 3

How do we adjust the intensity of an x-ray?

Answer 3

adjusting the amount of amperage (current) being supplied to the cathodes filament.

Question 4

Characteristic Intensity

Answer 4

Intensity diminishes over time based on the decay process, but is often determined based on a fixed rate of intensity per unit amount of radioactivity at a fixed distance.

Question 5

Intensity will determine the amount of ____ for the exposure needed to produce the image.

Answer 5

intensity determines the amount of exposure time needed.

Question 6

The lower the source activity the ______.

Answer 6

longer the exposure duration.

Question 7

How do we increase or decrease radiation energy for an x-ray?

Answer 7

Kilovoltage

- adjusts wavelength (penetration power) and intensity.

Question 8

How do we increase or decrease radiation intensity for an x-ray?

Answer 8

Milli-amperage

Question 9

What are “hard x-rays”?

Answer 9

Short wavelength x-rays with the most penetration power

Question 10

Characteristic x-ray graph

Answer 10

explains the effects of tube voltage and current on the overall radiation beam intensity on a graph.