Interaction

Question 0

The reduction in radiation intensity as a result of absorption and scattering

Answer 0

Attenuation

Question 1

X-ray disappears

Answer 1

Absorption

Question 2

Partial absorption

Answer 2

Attenuation

Question 3

Absorbs many x-rays

Answer 3

Radiopaque

Question 4

Absorbs few x-rays

Answer 4

Radiolucent

Question 5

What are the 2 factors that determine attenuation?

Answer 5

Atomic number(Z#) - number of protons in the nucleus

Tissue Density

Question 6

Produced whenever x-rays interact with any type of matter

Answer 6

Secondary radiation

Question 7

Completely absorbed and energy emitted

Answer 7

Secondary radiation

Question 8

A type of secondary radiation that only loses some energy and continues in another direction

Answer 8

Scatter radiation

Question 9

Primary radiation has what type of energy?

Secondary?

Answer 9

High

Low

Question 10

Occurs within the patient

Answer 10

Secondary radiation

Question 11

Results in higher patient dose

Answer 11

Secondary radiation

Question 12

What type of radiation happens to technologists?

Answer 12

Scatter radiation

Question 13

Passes through the tube housing

Answer 13

Leakage radiation

Question 14

Passes through the window

Answer 14

Primary radiation

Question 15

Produced when primary interacts with matter

Answer 15

Secondary radiation

Question 16

Primary and secondary rays which exit the patient and interacts with technologist

Answer 16

Remnant radiation

Question 17

Occurs anytime radiation interacts with matter

Answer 17

Secondary radiation

Question 18

Increases with the use of increased kVp

Answer 18

Secondary radiation

Question 19

Travels at the speed of light

Answer 19

Secondary radiation

Question 20

Occurs at lower kVp

Answer 20

Secondary radiation

Question 21

Increases patient dose

Answer 21

Secondary radiation

Question 22

What are the five types of interaction energies?

Answer 22

1. Classical/Coherent/Thompson
2. Photoelectric
3. Compton
4. Pair production
5. Photodisintegration

Question 23

kVp is lower than 10

Answer 23

Classical interaction

Question 24

No ionization occurs

Answer 24

Classical interaction

Question 25

Has low kVp's

Answer 25

Photoelectric interaction

Question 26

Interacts with the K shell

Answer 26

Photoelectric interaction

Question 27

Absorption at the inner K shell

Answer 27

Photo electric interaction

Question 28

Where secondary radiation occurs

Answer 28

Photoelectric interaction

Question 29

Is used a lot in mammography

Answer 29

Photoelectric interaction

Question 30

High contrast

Answer 30

Photoelectric interaction

Question 31

Dependent on the atomic number

Answer 31

Photoelectric interaction

Question 32

As atomic number increases, photoelectric absorption ________.

Answer 32

Increases

Question 33

Deals with higher kVp

Answer 33

Compton interaction

Question 34

Interacts with the outershell electron

Answer 34

Compton interaction

Question 35

Results in scatter radiation

Answer 35

Compton interaction

Question 36

Not useful for images but we have to have it

Answer 36

Compton interaction

Question 37

Electron diverges at any direction or angle

Answer 37

Compton interaction

Question 38

Occurs throughout diagnostic range

Answer 38

Compton interaction

Question 39

Knocks out outershell electrons

Answer 39

Compton interaction

Question 40

Attenuation

Answer 40

Compton interaction

Question 41

Increases radiographer dose

Answer 41

Compton interaction

Question 42

Energies greater than 1.02 MeV

Answer 42

Pair production

Question 43

Used in nuclear medicine and PET's

Answer 43

Pair production

Question 44

What type of atomic number does barium have?

Answer 44

High

Question 45

Has two positrons and one electron

Answer 45

Pair production

Question 46

Used in radiation therapy

Answer 46

Photodisintegration

Question 47

Energies above 10 MeV

Answer 47

Photodisintegration

Question 48

Interacts with nuclear force field and then disappears

Answer 48

Pair production

Question 49

Interacts with nucleus

Answer 49

Photodisintegration

Question 50

Photon absorbed by nucleus and nuclear fragment is emitted

Answer 50

Photodisintegration

Question 51

Unimportant in diagnostic radiation

Answer 51

Pair production & Photodisintegration