Exam 1 - 4. Radiation Physics

Question 1

3

The intensity of the X-ray beam is the _________.

Question 2

3

What is the formula for the intensity of the X-ray beam?

Question 3

3

The quantity of the x-ray beam is the number of _____. It is primarily realted to the ______ and ______.

Question 4

3

Quantity of the X-ray beam is expressed as ______.

Question 5

4

What is the quality of the X-ray beam?

Question 6

4

The quality of the X-ray beam is controlled primarily by the ____.

Question 7

4

X-ray of beam is _____, meaning there is a _____ of energies.

Question 8

5

What are 6 factors that control the X-ray beam intensity?

Question 9

6

As tube voltage increases, what happens to the number of photons generated?

Question 10

6

As tube voltage increases, what happens to the mean energy of photons?

Question 11

6

As tube voltage increases, what happens to the maximum energy of photons?

Question 12

7

As exposure time increases, what happens to the number of photons generated?

Question 13

7

As exposure time increases, what happens to the mean energy of photons?

Question 14

7

As exposure time increases, what happens to the maximum energy of photons?

Question 15

8

As tube current (mA) increases, what happens to the number of photons?

Question 16

8

As tube current increases, what happens to the mean energy of photons?

Question 17

8

As tube current increases, what happens to the maximum energy of photons?

Question 18

9

What does filtration selectively remove?

Question 19

10

What are the 4 components of inherent filtration?

Question 20

10

What is the component for added filtration?

Question 21

10

What is the formula for total filtration?

Question 22

10

What is the mm of filtration for 50 kVp to 70 kVp?

Question 23

10

What is the filtration for 70 kVp and greater?

Question 24

11

As filtration increases, what happens to the number of photons?

Question 25

11

As filtration increases, what happens to the mean energy of photons?

Question 26

11

As filtration increases, what happens to the maximum energy of photons?

Question 27

12

What does collimation do?

Question 28

12

What effect does collimation have on the number of photons?

Question 29

12

What effect does collimation have on the mean energy of photons?

Question 30

12

What effect does collimation have on the maximum energy of photons?

Question 31

13

What is the Inverse Square Law?

Question 32

13

What is the formula for the Inverse Square Law?

Question 33

14

The Inverse Square Law is one method of calculating the new beam intensity when changing the ______ to ______.

Question 34

14

What is the intensity when the source to receptor distance is doubled?

Question 35

14

What is the new intensity when the source to receptor distance is tripled?

Question 36

14

What is the intensity when the source to receptor distance is halved?

Question 37

15

As the source to receptor distance increases, what happens to the number of photons?

Question 38

15

As the source to receptor distance increses, what happens to the mean energy of photons?

Question 39

15

As the source to receptor distance increases, what happens to the maximum energy of photons?

Question 40

17

What alters density?

Question 41

17

What alters contrast?

Question 42

18

What is density?

Question 43

18

Density is related to _____ reach the receptor.

Question 44

18

Density is primarily controlled by ____ and less so by _____.

Question 45

18

Why is density primarily controled by mAs and somewhat by kVp?

Question 46

19

What is the relationship between mA and exposure time?

Question 47

20

What is contrast?

Question 48

20

Contrast is primarily controlled by ____.

Question 49

22

High contrast will have a ____ kVp.

Question 50

22

In high contrast, the density differences between adjacent areas are ____. There are ____ shades of grey.

Question 51

23

Low contrast has _____ kVp.

Question 52

23

In low contrast, the density differences between adjacent areas are ______; there are ____ shades of grey.

Question 53

25

High contrast is best for visualizing ___.

Question 54

25

Low contrast is best for visualizing ______.