Brainscape's Knowledge GenomeTM

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


See full index

Xray > Radiation > Flashcards

Radiation Flashcards

1
Q

Bergonie& tribondeau law

A

States all sensitivity to radiation. Exposure depends on 4 characteristics of the cell

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

Differentiation

A

Simple cells are more sensitive than high complex ones

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

Metabolic rate

A

cells that use energy rapidly are more sensitive than those that replicate slowly

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

MAs modifications

A

Deviation 🆙
Mas X 1.3

deviation ⬇️
Mas x 0.8

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

15% rule

A

Hard tissue
To increase contrast
Kvp x 0.85 , then más x2

Soft tissue
To decrease contrast
Kvp x1.15 n then MAs / 2

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

The study of diseases that cause abnormal changes in the structure or function of body tissues and organs is

A

Pathology

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

Which of the following is not an example if a tissue

A

Stomach

Neuron, muscle, skin

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

Bone tissue that has a honeycomb or trabecular structure is called

A

Cancellous tissue

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

Elbow joint is an example of what type of joint

A

Diarthrodial joint

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

When a limb is moved away from central part of the body this motion is called

A

Abduction

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

Technical term for a grainy or spotty image is

A

Quantum mottle

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

Milliamperage(mA) affects the

A

Number of photons produced per second or quantity of X-ray

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

The unit used to indicate the Total quantity of X-ray in an exposure

A

MAs

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

How is the energy of the X-ray beam affected when kvp is adjusted

A

Energy of the X-ray beam increases when KVp is increased ; vice versa

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

Which technique factors , if adjusted upward will increase density

A

mA , exposure time , MAs KVp

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

The primary controller of radiographic density is

A

MAs

17
Q

A doubling in kvp will result in how many more photons being emitted

A

Four times more photon will be emitted

18
Q

Modulation transfer function (MTF)

A

Is used to measure the capacity or accuracy of the digital detector to pass its spatial resolution characteristics to the final image

19
Q

Signal - to noise ratio (SNR)

A

Describe the ability of the digital system to convert the X-ray input electric signal into a useful radiographic image

Signal refers to the useful info in the image and noise refers to the amount of info that is not useful can be caused by quantum mottle

20
Q

Histogram

A

A graph of the minimum and maximum signals in the image

21
Q

Moire pattern

A

This artifact occurs when grid lines are not Alignex with the laser scanning frequency of the cr reader

22
Q

Light spot

A

Caused by dust or other foreign materials on up

23
Q

Phantom or ghost images

A

May appear as a results dog incomplete up erasur this artifact requires troubleshooting of both the cr plate preparation system and the display system

24
Q

DICOM DIGITAL IMAGING AND COMMUNICATION

A

is universally accepted standard for exchanging medical radiographic images.

25
Q

Grid radius

A

The distance at which the primary X-ray beam is parallel to the focused lead strip of the grid

26
Q

Erythema

A

Radiation burn

27
Q

Outer portion of bones is a layer of hard compact bone called

A

Cortex

28
Q

Milliamperes ( mA )

A

*controls radiographic density
*controls quantity of X-ray produced
*controlled by adjusting the mA
* quantity of exposure is directly proportional to mA

29
Q

Exposure time (sec)

A
  • controls radiographic density
    *controls quantity of X-ray produced
  • controlled by adjusting the timer in the X-ray circuit
    *quantity of exposure is directly proportional to exposure time
30
Q

Kilovolts (kvp)

A

*Controls radiographic contrast
*Controls the X-ray penetration
*Controls the quantity and quality of the X-ray beam
*Increased kvp results in increased quantity of photons
* increased kvp results in increased penetration of the body Part

31
Q

Source image receptor distance (SID)

A

Affects the density and intensity of the X-ray beam
Quantity of exposure is inversely proportional to the square of the distance

32
Q

Principle factors that affect X-ray quantity

A

MAs, kvp, SID, and filtration

33
Q

Factors that affect X-ray quality are

A

Kvp and filtration

34
Q

The unit MAs is the primary controller of

A

Radiographic density

35
Q

The kvp is the primary controller of the

A

Penetration of X-rays

36
Q

Primary controller of the radiographic contrast

A

Kvp

37
Q

Source image receptor distance

A

Affects the intensity of the X-ray beam and quantity of the X-rays

38
Q

Density

A

Photographic property that refers to the overall blackness or darkness of the radiographic image

39
Q

Distortion is primarily controlled by the

A

OID, Sid, cr angle, part position, ir position

Xray (8 decks)

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