Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Radiology > Quiz 1 Radiation Characteristics Chapter 3 > Flashcards

Quiz 1 Radiation Characteristics Chapter 3 Flashcards

savannah

1
Q

Define the key terms associated with radiation characteristics.

A

Quality
Quantity
Intensity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

X-Ray Beam Quality

A

mean energy or penetrating ability of the x-ray beam. The quality, or wavelength and energy of the x-ray beam, is controlled by kilovoltage.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Variations in the ____ of the x ray beam influence the quality of the resulting images

A

character

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Voltage

A

measurement of force that refers to the potential difference between two electrical charges.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

____ determines the speed with which electrons move

A

Voltage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When voltage is increased

A

the speed of electrons is increased

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

kilovoltage

A

is the maximum voltage, or peak voltage of an alternating current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

____is the overall darkness or blackness of an image

A

Density

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

If kVp is increased and other factors stay the same the image will

A

increase density and appear darker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

If kVp is decreased the resulting image

A

decrease in density and appears lighter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

____

A

refers to how sharply dark and light areas are differentiated or separated on an image

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Lower kVp settings are used a ___ image will result

A

high contrast: many black areas, many white areas, few shades of gray

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

For detecting dental caries would you want to use lower kVp or high Kvp

A

low kVp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

For detecting periodontal or periapical disease you would use lower or high kVp

A

high kVP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Exposure time refers to the interval of time during which x-rays are produced.

A

refers to the interval of time during which x-rays are produced.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Kilovoltage and exposure time are ___ related

A

inversely

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

___of the x-ray beam refers to the number of x-rays produced in the dental x-ray unit.

A

Quantity

18
Q

Amperage

A

Determines the amount of electrons passing through the cathode filament

19
Q

An increase in the number of electrons available to travel from the cathode to the anode results in production of an ___number of xrays

A

increased number of x rays

20
Q

The ___ of the xrays produced is controlled by milliamperage

A

quantity

21
Q

unit of measure used to describe the number of electrons, or current flowing through the cathode filament.

A

Ampere

22
Q

Regulates the temperature of the cathode filament

A

mA

23
Q

A higher mA setting ___ the temperature of the ____ filament and consequently increases the number of electrons produced

A

increases

cathode

24
Q

unit of measure used to describe the number of electrons, or current flowing through the cathode filament.

A

mA

25
Q

___ controls the amperage of the filament current and the amount of electrons that pass through the filament

A

mA

26
Q

increase in mA increases the overall ___ and results in a darker image

A

mA

27
Q

mA and exposure time are ___ related

A

inversely

28
Q

it is recommended to only adjust what on the xray control panel

A

exposure time

29
Q

____ refers to the energy or penetrating ability of the xray beam, ___ refers to the number of xray photons in the beam

A

Quality and Quantity

30
Q

is defined as the product of the quantity (number of x-ray photons) and quality (energy of each photon) per unit of area per unit of time of exposure, as follows:

A

Intensity

31
Q

___ controls the penetrating power of the xray beam by controlling the number of electrons produced in the x ray tube and the number of xrays produced.

A

mA

32
Q

The distance traveled by the x-ray beam affects the ___ of the beam

A

intensity

33
Q

The distance from the source of radiation (tungsten target in anode) to the patients skin

A

Target-surface distance

34
Q

Target-object distance

A

The distance from the source of radiation (tungsten target in anode) to the tooth

35
Q

Target-receptor distance

A

The distance from the source of radiation (tungsten target in anode) to the receptor

36
Q

The ___ ____ law is used to explain how distance affects the intensity of the xray beam

A

inverse square

37
Q

The ___ of ____ is inversely proportional to the square of the distance from the source of radiation

A

Intensity of radiation

38
Q

Inverse square law: When the target recetpor distance is doubled the resulting beam is

A

one fourth as intense

39
Q

Inverse square law: when the target receptor distance is reduced by half, the resulting beam is

A

four times as intense

40
Q

To reduce the intensity of the xray beam ___ filters are placed in the path of the beam inside the dental xray tubehead

A

aluminum

41
Q

Aluminium filters are used to remove the ____________ wavelength xrays.

A

low energy less penetrating longer

42
Q

Half value layer HVL

A

When aluminum or material is placed in path of the xray beam the intesnity is reduce d by half

Radiology (22 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions