Basics Flashcards

1
Q

The more kVP the more …

A

Energy
Quality
Penetration

Scatter

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2
Q

KVP is highly associated with what?

A

Imagine density

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3
Q

For extremities would a larger or smaller FSS be preferable ?

A

Smaller

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4
Q

mAs will increase …

A

Amount of photons and interaction

Patient absorbed dose

IMAGE DENSITY

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5
Q

mAs is associated with

A

Quantity

Density

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6
Q

kVp is associated with

A

Quality
Penetration
Contrast

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7
Q

Radio-opaque is described as ?

A

White area where xrays have been absorbed

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8
Q

Radio lucent is described as

A

Black areas where transmission has occurred and little absorption. E.g air

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9
Q

Density is

A

The degree of blackening in an image

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10
Q

Is long scale association with a low or high kVP

A

High

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11
Q

Symptoms of RA

A

Swollen and inflamed synovial membrane

Bone erosion

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12
Q

Sympotoms of OA

A

Calcification
‘Bone on bone
Thinned cartilage

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13
Q

What projection is used to image bone age ?

A

PA of left hand

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14
Q

What is the FFD for a bone age projection ?

A

76cm (DR)

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15
Q

At what age does the scaphoid bone ossify ??

A

4-6 years

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16
Q

What are the 2 routine hand projections ?

A

PA

PA oblique

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17
Q

PA hand key points

A

Centre @ 3rd MCP joint

KVP - 45
Mas - 2.5

Fine focus, no grid

18
Q

What size imagine plate would be used in CR for a PA hand?

19
Q

Critique of a PA hand

A

No rotation (symmetry)
No super imposition.
No soft tissue overlap
Joint space open

20
Q

What is a lateral projection of the hand best used for ?

A

Foreign body localisation

Fracture alignment

21
Q

What is PA of both hands sometimes used for ?

A

Evaluation of arthritis conditions

22
Q

What is Norgaard method used for??

A

Rheumatoid Arthiritis

23
Q

mAS
kVp
Centre

LATERAL HAND

A

4.5
50
2nd MCP joint

24
Q

Critique of lateral hand

A

Phalanges are forearm Superinposed

Thumb free of SI and of motion

25
Q

KVP
MAS
CENTRE

NORGAARD

A

45
2.5
Between hands at MCP joint level

26
Q

Norgaard critique

A

Midshafts of 2-5 free of SI

MCP joints open

27
Q

Imaging plate size of PA and PA oblique and lateral of hand

A

PA’s : 24x30

Lateral : 18x24

28
Q

Standard finger projections

A

PA
PA OBLIQUE
LATERAL

29
Q

KVP
MAS
CENTRE

PA FINGER

A

42
2
PIP joint

30
Q

KVP
MAS
CENTRE

PA oblique

A

42
2
PIP JOINT

31
Q

KVP
MAS
CENTRE

LATERAL FIGNER

32
Q

Critique of lateral finger

A

Concave of bone surface is anterior
Little overlap
Open joint space

33
Q

Imaging plates for finger projections

A

Fit them all on 18x24

34
Q

Standard thumb projections

A

AP/PA
PA oblique
Lateral

35
Q

KVp
MAS
Centre

ap of thumb

36
Q

Critique of thumb PA/AP

A

Trapezium included

37
Q

KVP
MAS
CENTER

PA OBLIQUE THUMB

38
Q

Critique PA oblique thumb

A

Trapezium visible

45 degree angle of thumb

39
Q

KVP
MAS
CENTRW

LATERAL OF THUMB

40
Q

Critique lateral thumb

A

Trapezium

Concave surface on anterior of thumb

41
Q

Name all the types of fractures

A
Incomplete
Transverse
Oblique
Spiral 
Comminuted
Avulsion
Butterfly
Segmental
Green stick
Torus