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211L > Analysis of Some Factors Affecting Radiographic Density > Flashcards

Analysis of Some Factors Affecting Radiographic Density Flashcards

1
Q

Radiographic film OD

A

0-4 OD (clear to black)

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2
Q

Factors affecting OD

A

mAs
kVp
OID
SID
Generator waveform
Part thickness
IR speed
Mass density
Devt time
Collimation
Grid ratio

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3
Q

OD can be controlled by two majot factors:

A

mAs and SID

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4
Q

Lung Mass Density

A

320

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5
Q

Fat Mass Density

A

910

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6
Q

Soft tissue, muscle mass density

A

1,000

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7
Q

Bone mass density

A

1,850

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8
Q

Air mass density

A

1.3

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9
Q

Barium mass density

A

3,500

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10
Q

Iodine mass density

A

4,930

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11
Q

Calcium mass density

A

1,550

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12
Q

Concrete mass density

A

2,350

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13
Q

Mo mass density

A

10 200

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14
Q

Pb mass density

A

11 350

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15
Q

Re mass density

A

12 500

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16
Q

Tungstate

17
Q

Classifying Pathology

Radiolucent (Desctructive)

A

Active TB
Atrophy
Bowel obstruction
Cancer
Degenerative arthritis
Emphysema
Osteoporosis
Pneumothorax

18
Q

Classifying Pathology

Radiopaque (Constructive)

A

Aortic aneurysm
Ascites
Atelectasis
Cirrhosis
Hypertrophy
Metastases
Pleural effusion
Pneumonia
Sclerosis

19
Q

Fat Z

20
Q

Soft Tissue Z

21
Q

Lung Z

22
Q

Bone Z

23
Q

Air Z

24
Q

Iodine Z

25
Barium Z
56
26
Concrete Z
17
27
Mo Z
42
28
W Z
74
29
Pb Z
82
30
Ultra high or-hi plus screen relative speed value
300
31
High or fast screen relative speed value
200
32
Medium, par or standard screen relative speed value
100
33
Detail, slow or high resolution screen relative speed value
50
34
Ultra-detail screen relative speed value
25

211L (4 decks)

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