Xray Production Flashcards

1
Q

Electrons have

A

Same mass

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

Electron KE is increased by

A

Raising kVp

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

Increased electron KE will result to

A

Increased in both the intensity and energy of the X-ray beam

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

Distance bet the filament and X-ray tube target

A

Approx. 1cm

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

Accelerating force needs to raise the velocity of electrons from

A

Zero to half the speed of light in a short distance

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

Electrons travelling from cathode to anode

A

Projectile electrons

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

When projectile electrons travels

A

Hit the target

Transfer their kinetic energy to the target atoms

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

Most kinetic energy of projectile electrons is

A

Converted into heat

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

Interact with the outer-shell electrons but do not transfer sufficient energy

A

Projectile electrons

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

Responsible for most of the heat generated in the X-ray tube

A

Constant excitation

Return of outer-shell electrons

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

Approx. 99% of KE of projectile electrons is

A

Converted into heat

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

Tube current and anode heat is

A

Directly proportional

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

Efficiency of X-ray production increases

A

Increasing kVp

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

Emitted when an outer-shell electron fills an inner shell void

A

Characteristic radiation

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

Result when the interaction is sufficiently violent to ionize the target atom through removal of inner shell electron

A

Characteristic radiation

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

Ejection if an inner shell electron resulted to

A

Void in the k-shell

17
Q

Only shell that is useful in imaging

A

K-characteristic X-rays of tungsten

18
Q

LMNO shell

A

Less energy due to lower binding energy

19
Q

Type of x-radiation is called characteristic because it is

A

Characteristics of the target element

20
Q

Higher the atomic number of the target

A

Higher the energy of characteristic X-ray

21
Q

Bremsstrahlung is also known as

A

General
White radiation
Polychromatic
Continuous

22
Q

Electromagnetic radiation generated when

A

Negatively charged electrons in motion are deflected by positively charged atomic nuclei

23
Q

Interaction bet projectile electron and the nuclear force field of a target atom

A

Bremsstrahlung radiation

24
Q

Attraction bet projectile electron that may come close the nucleus

A

Electrostatic force of attraction

25
Loss of kinetic energy reappears as an X-ray
Bremsstrahlung X-rays
26
Bremsstrahlung is a German word that means
"Slowed down radiation" "braking radiation"
27
Bremsstrahlung refers to the
Deceleration of electrons as the cause of radiation
28
Low energy bremsstrahlung results when
The projectile electron is barely influenced by the nucleus
29
High energy X-rays occurs when
The projectile electrons loses all its kinetic energy and simply drifts away from the nucleus
30
Greater the change in direction
the more energy loss of energy, | Higher energy photon
31
At 100 kVp,
Approx 15% of the X-ray bean is characteristic | Remaining is bremsstrahlung
32
Energy of motion
Kinetic energy