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Radiological Technology > CH1 > Flashcards

CH1 Flashcards

1
Q

Radiographer

A

Administers ionizing radiation to preform procedures.

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2
Q

Ethics

A

moral responsibilty and appropriate conduct towards others.

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3
Q

ALARA

A

As low as Reasonably achievable

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4
Q

Privacy

A

Chart, overhearing, undressing

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5
Q

Image Receptor (IR) (aka cassette)

A

Device receives the energy of the x-ray beam and forms body part image.

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6
Q

The 4 types of IR’s are:

A

Cassette w/film, PSP IP, DR, Fluoroscopic IR.

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7
Q

CR

A

Commputed Radiogrphy

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8
Q

DR

A

Digital Radiography

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9
Q

Image recorded by exposing IR to light is called:

A

Radiograph

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10
Q

7 Standpoints necessary for good image

A

Superimposition, Adjacent structures, Optical Denisty, Contrast, Spatial Resolution, Magnification, Shape Distortion

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11
Q

Optical Density in film

A

degree of blackening, controlled by mAs,

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12
Q

Optical Density in digital

A

degree of brightness, automatic, digital more affected by dose &noise

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13
Q

Contrast

A

difference in density, controlled by kV peak

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14
Q

Low contrast

A

density lack

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15
Q

High Contrast

A

density overload

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16
Q

mA (miliamperage)

A

current quantity of x rays -> Density (blackness of image)

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17
Q

s

A

length of exposure

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18
Q

(kv) kilovoltage

A

force quality => shades of density (it is the controlling factor of contrast)

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19
Q

As KV increases

A

more image density

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20
Q

Weaker kv

A

low contrast image lack of density

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21
Q

Light grays are produced by

A

weaker or low kv

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22
Q

Dark grays are produced by

A

stronger or high kv

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23
Q

High contrast is due to

A

low kvp

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24
Q

Low contrast is due to

A

high kvp

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25
Q

Spatial Resolution or recorded detail

A

ability to visualize small structures, detail seen in image or clarity

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26
Q

Long scale contrast leads to

A

low contrast

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27
Q

Short scale contrast leads to

A

high contrast

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28
Q

Magnification

A

Controlled by OID or SID

29
Q

OID

A

Object to Image Receptor Distance

30
Q

SID

A

Source to Image Receptor Distance

31
Q

INC OID

A

Magnification inc

32
Q

Dec SID

A

Magnification inc

33
Q

Shape distortion is caused by

A

elongation and foreshortening

34
Q

Size Distortion

A

caused by magnification

35
Q

There are 2 types of motion:

A

Voluntary, Involuntary

36
Q

Voluntary motion is controlled by

A

Nervousness, Discomfort, Exciteability, Mentall Illness, Fear, Age, Breathing

37
Q

Involuntary Motion is controlled by

A

heart, chills, peristalsis, tremor, spasm, pain,

38
Q

4 image quality factors

A

Density, contrast, detail, distortion

39
Q

Projection

A

Part of the beam entering and exiting the pt.

40
Q

Position

A

Body part in relation to the IR

41
Q

Axial

A

long axis of the part where the CR is 10 degrees or more

42
Q

Obliques

A

when the part is postioned between 0-90 degrees angled

43
Q

Placements and Orientation of can be

A

lengthwise, crosswise, Diagonal

44
Q

the Direction of the CR must always

A

be centered to the part of interest

45
Q

Cephalad

A

Angle of the tube towards the head.

46
Q

Caudad

A

Angle of the tube away from the head.

47
Q

Collimation

A

limiting the size of the x ray field to the area of clinical interest (FOV) also reduces scattering

48
Q

Sagittal

A

Divides the body into left and right segments.

49
Q

Coronal

A

divides body into anterior and posterior.

50
Q

Horizontal

A

passes crosswise through body @ a right angle to the objects longitudinal axis. (AKA Axial or Transverse)

51
Q

Oblique

A

pass through body part at any angle.

52
Q

Interiliac

A

transects top of iliac crest at level of 4 and 5 lumbar

53
Q

Occlusal

A

formed by the biting of closed teach and closed jaw

54
Q

Thoracic Cavity Contains

A

Pleural membranes, lungs, trachea, esophagus, pericardium, heart

55
Q

Abdominall cavity contains

A

lots

56
Q

C1

A

Mastoid tip

57
Q

C3

A

Gonium

58
Q

C4

A

Hyoid Bone

59
Q

C5

A

thyroid carilage

60
Q

C7

A

Vertebral Prominens

61
Q

T2-3

A

jugular notch

62
Q

T4-5

A

Sternal Angle

63
Q

T 7

A

inferior angle of scapulae

64
Q

T9-10

A

xiphoid process

65
Q

L2-3

A

Inferior angle of rib

66
Q

L4-5

A

supermost Iliac crest

67
Q

S1S2

A

Anterior superior Iliac spine ASIS

68
Q

Coccyx

A

pubis symphysis, and greater trochanter

Radiological Technology (9 decks)

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