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Application of Imaging > Lower limb xray > Flashcards

Lower limb xray Flashcards

1
Q

toes DP position

A

seat on table
flex knee
place on 15 pad/angle tube 15

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2
Q

toes dp centring point

A

third metatarso-phalangeal joint
or affected toe

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3
Q

toes dp essential image characteristics

A

entire toes to metatarsals
or each toe either side of affected toe

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4
Q

lateral big toe position

A

rotate from dp until medial side of big toe contacts detector
pull other toes away

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5
Q

lateral big toe centring point

A

metatarso-phalangial joint

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6
Q

lateral big toe essential image characteristics

A

collimation: distal 2/3 metatarsal and all phalanges
joints clear

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7
Q

toes oblique position

A

rotate medially 45

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8
Q

toes oblique centring point

A

third metatarso-phalangeal joint

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9
Q

toes oblique essential image characteristics

A

collimation: proximal metatarsal and phalanges
if not all toes, toes adjacent to affected aswell

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10
Q

foot dp position

A

seat on table
knee flex
on 15 pad or rotate tube 15

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11
Q

foot dp centring point

A

cuboid navicular joint

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12
Q

foot dp essential image characteristics

A

lateral and medial malleoli included
visible joints
collimation: entire foot

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13
Q

foot oblique position

A

rotate medially to 45 from dp position

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14
Q

foot oblique centring point

A

cuboid navicular joint

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15
Q

foot oblique collimation

A

entire foot

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16
Q

foot lateral erect position

A

bad foot forward and weight bearing
lateral part of foot contact detector

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17
Q

foot lateral erect centring point

A

base of first metatarsal

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18
Q

foot lateral essential characteristics

A

arches of foot shown
collimation: phalanges to calcaneum
may do both feet to compare

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19
Q

axial calcaneum position

A

seated on table
dorsiflex ankle

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20
Q

axial calcaneum centring point

A

tube cranial 40
plantar aspect of heel at level of 5th metatarsal tubercule

21
Q

axial calcaneum essential image characteristics

A

collimation: soft tissue borders, whole calcaneum
subtalar joint and sustentaculum tali visible

22
Q

AP ankle position (mortise joint)

A

seat on table or supine
extend leg and dorsiflex ankle
rotate medially slightly so malleoli equidistant

23
Q

AP ankle centring point

A

midway between malleoli

24
Q

AP ankle essential image characteristics

A

clear joint spaces
collimation: distal 1/3 tib fib to 5th metatarsal base

25
Q

lateral ankle position

A

turn onto affected side still dorsiflex from ap

26
Q

lateral ankle centring point

A

medial malleolus

27
Q

lateral ankle essential image characteristics

A

medial lateral borders of trochlear articular surface of talus superimposed
collimation: distal 1/3 tib fib, calcaneum, base of 5th metatarsal

28
Q

AP tib fib position

A

supine, extend legs, dorsiflex ankle
rotate medially so malleoli equidistant

29
Q

AP tib fib centring point

A

midway of tibia

30
Q

AP tib fib collimation

A

knee to ankle joint

31
Q

lateral tib fib position

A

from ap, turn onto affected side
superimpose malleoli by rotating

32
Q

lateral tib fib centring point

A

midway of tibia

33
Q

lateral tib fib collimation

A

knee to ankle joint

34
Q

AP knee position

A

weight bearing normally
rotate so patella lies equally between condyles

35
Q

AP knee centring point

A

1cm below apex of patella

36
Q

AP knee collimation

A

whole knee, distal femur, proximal tib fib

37
Q

lateral knee position

A

patient turns to side and flexes knee 45
femoral condyles superimposed
angle tube 5

38
Q

lateral knee centring point

A

superior border of medial tibial condyle

39
Q

lateral knee essential image characteristics

A

patella clear of femur
fibula head 1/3 superimposed behind tibia
collimation: distal 1/3 femur, proximal 1/3 tib fib

40
Q

AP femur position

A

supine
extend leg internally rotate to centralise patella

41
Q

AP femur centring point

A

midshaft of femur

42
Q

AP femur collimation

A

hip to knee joints

43
Q

lateral femur position

A

from AP, turn onto affected side, flex knee slightly
superimpose femoral condyles

44
Q

lateral femur centring point

A

midshaft of femur

45
Q

lateral femur collimation

A

hip to knee joints

46
Q

Lateral calcaneum position

A

Lie on affected side
Malleoli superimposed
Dorsiflexion

47
Q

Lateral calcaneum centring point

A

2.5cm distal to medial malleolus

48
Q

Lateral calcaneum collimation

A

Entire calcaneum

Application of Imaging (8 decks)

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