Exam 1 (Basics/Chest and Abd Flashcards

(66 cards)

1
Q

overall blackening/darkness of the film

A

density

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2
Q

density is controlled by _____

A

mAs

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3
Q

the difference between adjacent densities on a radiograph or varying shades of gray on film

A

contrast

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4
Q

contrast is controlled by

A

kVp

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5
Q

other influencing factors of radiographic quality

A
amount or type of tissue
collimation
filtration and grids
SID
processing
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6
Q

T or F

a film does not need to be repeated routinely for contrast

A

true

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7
Q

if you double mA, mAs will be _____

A

doubled

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8
Q

100mA x .2s =

A

20 mAs

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9
Q

200mA x .2s

A

40 mAs

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10
Q

how do you make the flim twice as dark?

A

double the mAs

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11
Q

how do you make the film half as dark?

A

cut the mAs in half

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12
Q

if you double the time the mAs is _____

A

doubled

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13
Q

if you half the time, the mAs is _____

A

halved

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14
Q

doubling or halving the the mAs will double or half ______, and is known as what?

A

flim density, 50% mAs reciprocal rule

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15
Q

adding or subtracting ___% kVp has the same effect on film density as doubling or halving the mAs, and is known as what?

A

15%, 15% kVp rule

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16
Q

if you can see the bone, leave the _____ alone

A

kVp

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17
Q

if SID is changed, is mAs or kVp adjusted?

A

mAs

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18
Q

if SID changes from 40” to 72” multiply the mAs by __

A

3

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19
Q

if SID is changed from 72 to 40, how would you change the mAs

A

divide by 3

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20
Q

chest radiography requires a high ____

A

kVp

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21
Q

chest films are at ___”

why?

A

72

reduce magnification of the heart

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22
Q

what filter is used for chest films?

A

none

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23
Q

what views are in a routine chest series?

A

PA

left lateral

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24
Q

film size for PA chest

A

14x17

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25
where do you position the cassette for PA film?
1 1/2 inches above the VP
26
where is the ID blocker on PA chest?
UP
27
where is the marker for PA chest?
L on left side above shoulder
28
what are the breathing instructions for PA chest?
deep inspiration and hold
29
what filter is used for PA chest?
none
30
optimal PA chest films have ___ thoracics identified well
4
31
optimal PA chest has how many ribs visible?
10 posterior or 7 anterior
32
PA chest needs to include the top of the ____ to the bottom of the _____
apices | costophrenic angle
33
film size for left lateral chest
14x17
34
patient positioning for left lateral chest
left side against bucky, arms extended over head
35
breathing instructions for left lateral chest
deep inspiration and hold
36
filter used for left lateral chest
none
37
chest accessory views (2)
apical lordotic | left lateral decubitus
38
how is an apical lordotic done?
chest is tipped and CR is perpendicular to film or chest is parallel to film and CR is tilted 15 degrees cephalic
39
why is apical lordotic view done?
to project clavicles
40
film size for KUB
14x17
41
for KUB, CR is at ____
iliac crest
42
breathing instructions for KUB
exhale and hold
43
what does a KUB show?
kidneys, ureter, bladder
44
aka KUB
recumbent, flat plate
45
if aneurysm is suspected, do _____
lateral abdomen
46
an upright AP abdomen is done to show what? (2)
free air in abdominal cavity | air-fluid levels
47
upright AP abdomen, top of cassette is at the level of the _____
axilla
48
upright AP abdomen CR is approximately where?
2" above iliac crest
49
upright AP abdomen needs to include the top of the ____
diaphragm
50
clinic rib series
AP unilateral AD or BD AD or BD posterior oblique PA chest
51
why would a rib view be done recumbent?
to show better detail
52
film placement for AP AD recumbent ribs?
top of film is 1 1/2 inches above VP
53
film placement for AP BD recumbent ribs
bottom of film is at iliac crest
54
patient positioning for posterior oblique ribs
rotate unaffected side 45 degrees away from the bucky
55
flim placement for AD posterior oblique ribs
top of cassette is 1 1/2 inches above VP
56
flim placement for BD posterior oblique ribs
bottom of cassette at ililac crest
57
breathing instructions for AD posterior oblique ribs
inhale and hold
58
breathing instructions for BD posterior oblique ribs
exhale and hold
59
universal routine rib series
AP or PA (unilateral or bilateral) posterior oblique PA chest
60
SID for AP or PA ribs
40"
61
film size and orientation for bilateral ribs
14x17 transverse
62
cassette placement for bilateral AD ribs
1 1/2 inches above shoulders
63
cassette placement for bilteral BD ribs
bottom of cassette at crest
64
4 most common reasons for pediatric radiography
chest abdomen bone survey extremities
65
it is usually normal to see air where?
under the left hemi-diaphragm (megan blas)
66
gonadal shield may be used on ____ if it doesnt interfere with abdominal anatomy
males