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rad 104 midterm exam > rad 104 exam > Flashcards

rad 104 exam Flashcards

1
Q

variation in density level

A

contrast

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2
Q

what are the 2 photographic aspect?

A

density
contrast

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3
Q

overall blackening

A

density

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4
Q

variation in density level that makes detail visible

A

contrast

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5
Q

reduction in the intensity of an x-ray beam as it traverses matter by absorption or deflection of photons

A

attenuation

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6
Q

2 categories of contrast

A

image receptor contrast
subject contrast

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7
Q

inherent in screen/film permanently

A

image receptor contrast

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8
Q

controlled by anatomy/pathology

A

subject contrast

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9
Q

2 types of contrast

A

high - few density
low - many shades of gray

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10
Q

short scale contrast

A

low gray tones

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11
Q

long scale contrast

A

high gray tones

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12
Q

narrow latitude(low margin of error)

A

short scale contrast

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13
Q

wide latitude(high chance of failure)

A

long scale contrast

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14
Q

factors affecting contrast

A

kvp
grid
collimation
OID/OFD
anatomic parts
contrast media
film processing

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15
Q

main controlling factor of contrast, directly controls the contrast

A

kVp

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16
Q

improves contrast and absorbs scattered rad

A

grid

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17
Q

low focal spot = low SR, noise, fog = low density = high contrast (low pt dose)

A

collimation

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18
Q

air gap technique(high pt dose because of high mAs)

A

object to image receptor distance/ object to film distance

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19
Q

high x-ray absorption

A

constructive pathology

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20
Q

low x-ray absorption

A

destructive pathology

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21
Q

enlargement/bulge of aorta in the abdomen

A

abdominal aortic aneurysm

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22
Q

build up of fluid in the abdomen

A

ascites

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23
Q

liver condition, turns yellow

A

cirrhosis

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24
Q

excessive development of an organ

A

hypertrophy

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25
Q

collapsed lungs

A

atelectasis

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26
Q

heart failure

A

congestive heart failure

27
Q

spread of cancer to the bones

A

osteoblastic metastasis

28
Q

fluid in lungs (in parietal plural)

A

pleural effusion

29
Q

infection with pus(nana)

A

pneumonia

30
Q

water in brain(cerebrospinal fluid)

A

hydrocephalus

31
Q

benign bone tumor

A

osteochondroma

32
Q

weakens and deforms the bone

A

late stage of paget’s disease

33
Q

other term of pus

A

abscess

34
Q

swelling(manas)

A

edima

35
Q

blockage of large and small intestine

A

bowel obstruction

36
Q

kabag

A

free air

37
Q

lung condition(shortness of breath)

A

emphysema

38
Q

air trapped in pleural space/cavity

A

pneumothorax

39
Q

inhaled bacteria

A

tuberculosis(tb)

40
Q

sharp crystals that stab the joint

A

gout

41
Q

early stage of paget’s disease is destructive: true or false

A

true

42
Q

weakens and makes the bone less dense

A

osteoporosis

43
Q

stiffens bone

A

generative arthritis/osteoarthritis

44
Q

decrease in bone size

A

atrophy

45
Q

tissue death

A

necrosis

46
Q

severely thin people

A

emaciation

47
Q

underweight

A

malnutrition

48
Q

2 geometric aspect

A

definition
distortion

49
Q

clarity of the sharpness of the structural lines of anatomic parts

A

definition

50
Q

sharpness w/ which the anatomical structures are displayed on an image receptor

A

recorded detail

51
Q

how well the recorded detail can be seen

A

visibility of detail

52
Q

true image

A

umbra

53
Q

blurred areas around the umbra

A

penumbra

54
Q

area of anode’s target where x-rays are emitted

A

focal spot

55
Q

change in size

A

distortion

56
Q

formula for fs blur

A

FSS x OID / SOD

57
Q

SOD formula

A

OID - SID

58
Q

what is under Recorded Detail

A

geometric unsharpness
motion blur
receptor unsharpness

59
Q

what is under distortion

A

size
shape

60
Q

blur

A

geometric unsharpness

61
Q

blur of patient

A

motion blur

62
Q

where parallax effect occurs

A

receptor unsharpness

63
Q

magnification

A

size

64
Q

elongation/foreshortening

A

shape

rad 104 midterm exam (1 decks)

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