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Positioning for Placement Blocks > Hand and Fingers > Flashcards

Hand and Fingers Flashcards

1
Q

what is the special technique used to image the 5th finger laterally called

A

trident

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2
Q

what is the CP for fingers

A

Perpendicular to the PIP joint of the finger

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3
Q

what is the collimation for fingers

A

fingertip to distal 1/3 metacarpal

include 2 fingers either side

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4
Q

what is the SID for hand and finger views

A

100-110cm

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5
Q

what is the kVp for hand and finger views

A

50-60kVp

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6
Q

what is the mAs for hand and finger views

A

1.5-2.5mAs

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7
Q

do you use grids for for hand and finger views

A

no grid

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8
Q

what are the 3 types of projections for fingers

A

lateral
oblique
AP/DP

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9
Q

what are the 6 projections for hands

A 
lateral
AP
PA
PA Oblique
fan lateral
bilateral ball catchers
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10
Q

what is the CP for hand views

A

perpendicular to MCP joint

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11
Q

for AP hand views which way does the palm face

A

palm up

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12
Q

for lateral and PA hand views which way does the palm face

A

palm down

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13
Q

what is the collimation for hands

A

fingers to distal 1/3 of radius and ulnar

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14
Q

what is the CP for the PA oblique hand view

A

perpendicular to 3rd MCP

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15
Q

what is the CP for the fan lateral hand view

A

perpendicular to 2nd MCP

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16
Q

what is the CP for the bilateral ball catcher hand view

A

perpendicular to and between the hands at MCP level

17
Q

what is the image critique for hands and fingers patient positioning

in terms of elbow, hand and forearm

A

elbow flexed

hand flat

forearm on table

18
Q

what is the image critique for true lateral hands patient positioning

in terms of 3 things that need to be superimposed

A

distal radius and ulna are superimposed

metacarpals superimposed

phalanges of fingers superimposed

19
Q

what is the image critique for true lateral fingers patient positioning

A

concave anterior surface of shaft of phalanges

20
Q

what is the image critique for fan lateral hand patient positioning

in terms of 2 things that need to be superimposed and what the fingers should be

A

distal radius and ulna superimposed

metacarpals superimposed

fingers lateral but separated

21
Q

what is the area of interest for finger projections

A

all of finger to include distal metacarpal

22
Q

what is the area of interest for thumb projections

A

all of thumb to include metacarpal and trapezium

23
Q

what is the area of interest for wrist projections

A

distal radius/ulna to mid metacarpals

24
Q

what are the 3 signs of good exposure

A

optimal density/brightness and contrast with no motion

soft tissue margins visible

clear sharp bony trabeculae

Positioning for Placement Blocks (9 decks)

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