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203 MEDIMAGE - Lectures > 2a. Femur > Flashcards

2a. Femur Flashcards

1
Q

what is the SID for femur views

A

100cm

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2
Q

what is the kV for femur views

A

65-75kV

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3
Q

what is the mAs for femur views

A

around 16mAs

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4
Q

do you use grids for femur views

A

yes

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5
Q

what is the patient positioning for an AP mid/distal femur view

in terms of patient position, IR centering, which end hip should be at and why

what is the rotation

A

hip at cathode end (anode heel effect)

Supine

Femur centred to IR midline

mid/distal =  5* internal rotation lower limb
proximal = 15* internal rotation lower limb
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6
Q

in terms of patient positioning what is the rotation angle for the mid/distal femur

A

5* internal rotation lower limb

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7
Q

in terms of patient positioning what is the rotation angle for the proximal femur/distal hip

A

15* internal rotation lower limb

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8
Q

what is the CP for the AP mid/distal femur view

A

perpendicular to mid femur

between knee and hip joint

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9
Q

what is the CP for the lateral (mid/distal/proximal) femur view

A

perpendicular to mid femur

between knee and hip joint

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10
Q

what is the patient positioning for a lateral (mid/distal/proximal) femur view

in terms of patient position, unaffected leg positioning, knee angle and alignment

what is the rotation

A

recumbent

Patient turned to affected side

Unaffected leg behind patient

Flex affected knee 45* and align femur w/ IR midline

Rotate feet internally

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11
Q

what should be the rotation be for the feet when taking a lateral (mid/distal/proximal) femur view

A

Rotate feet internally

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12
Q

what is the CP for a trauma mediolateral femur view

A

Horizontal ray

perpendicular to mid femur

between knee and hip joint

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13
Q

what is the patient positioning for a trauma lateromedial femur view

in terms of patient position, leg positioning, IR position

A

Supine

Straight leg, support under knee/leg

Vertical IR between legs (superiorly as possible to knee joint)

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14
Q

what is the image critique for an AP femur view in terms of positioning

what shows no rotation

A

no rotation = femoral/tibial condyles symmetric in size and shape

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15
Q

what is the image critique for an lateral femur view in terms of positioning

in terms of superimposition, what shows good rotation

A

femoral condyles superimposed

proximal femur not superimposed

internal rotation = G-trochanter in profile

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16
Q

what is the image critique for an lateral femur view in terms of area of interest for femur views

2 points

A

Distal 2/3 femur

Knee joint included

203 MEDIMAGE - Lectures (12 decks)

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