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QAQC > QCP For Radiographic Units > Flashcards

QCP For Radiographic Units Flashcards

1
Q

Quality control program for rad units

A

Visual inspection
Environmental inspection
Performance testing

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2
Q

Includes checking the main components of the equipment for the proper function

A

Visual inspection

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3
Q

Visual isnpection should be done

A

Annually

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4
Q

Contain all selector for the production of xray

A

Control panel

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5
Q

Visual inspection

A

Control panel
Overhead tube crane
Radiographic table
Protective lead apparel

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6
Q

Control panel inspection

A

Tube heat sensor
Overload protector indicator
Panel light

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7
Q

Mounting braket that holds the xray tube over the xray table

A

Overhead tube crane

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8
Q

Items to inspect include surface condition and cleanliness , angulation switches , angulation indicator, footboard and shoulder braces

A

Radiographic Table

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9
Q

Protective apparel should be radiographed or viewed fluoroscopically every

A

Six months

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10
Q

Miscellaneous Equipment

A

Calliper presence
Technique chart
Positioning accessories
Intravenous stands

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11
Q

Mechanical and electrical safety

Includes evaluation of electrical cables and xray tube

A

Environmental Inspection

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12
Q

Environmental inspection should be done

A

Annually

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13
Q

Evaluates the performance of the xray generator and xray tube

A

Performance testing

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14
Q

Data obtained in performance testing includes radiation measurements

A

Radiation measurements

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15
Q

Most common type of detector

A

Geiger-Mueller Counter

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16
Q

Value obtained from radiation detector is also the

A

Radiation intensity (roentgen/coulomb per kg)

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17
Q

Produce tge same intensity of radiation each time the same sets of technical factors are used

A

Reproducibility

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18
Q

Max variability allowed in reproducibility is

A

+- 5 %

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19
Q

Evaluation of reproducibility requires

A

Dosimeter

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20
Q

Reproducibility variance

A

(mRmax-mRmin)/(mRmax +mRmin)

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21
Q

Emit a specific amount of radiation per unit of xray tube current and time

A

Radiation output

22
Q

Amount of radiation

A

mR

uC/kg

23
Q

Unit of xray tube current

A

mAs

24
Q

Radiation output testing original acceptance value should be

A

10 %

25
Q

Necessary to remove low energy photons

A

Proper filtration

26
Q

Method to determine presence of adequate filtration

A

Half value layer

27
Q

Taking half the maximum dosimeter reading and drawing a line from this point to the absorbed thickness

A

Filtration check (hvl)

28
Q

Hvl should be

A

> 2.3mm at 8kvp , 50mAs

29
Q

Has asignificant effect on the image contrast

A

Tube voltage

30
Q

Kvp accuracy should be

A

5%

31
Q

Directly affects thetotal quantity of radiation

A

Exposure time

32
Q

Used to regulate tube temperature

A

mA selector

33
Q

Same mAs selected but with different combination of mA and exposure time

A

Reciprocity

34
Q

Reciprocity variation

A

10%

35
Q

Raciprocity variance

A

= ((mR/mAs max - mR/mAs min) / mE/mAs ave) / 2

36
Q

Sequencial increase in mAs

A

Linearity

37
Q

Linearity variance is

A

10%

38
Q

Linearity variance =

A

(( mR/mAs max - mR/mAs min) / mR /mAs ave ) /2

39
Q

Area of the anode that is being bombarded

A

Focal spot

40
Q

Focal spot size increase w/ age

A

Blooming

41
Q

Used to evaluate blooming

A

Pinhole camera

42
Q

Responsible for regulating size of xray field

A

Beam restricting system

43
Q

BRS should be done

A

Twice a year

44
Q

How well the collimator regulates field size

A

Light field - Radiation Field Congruence

45
Q

LF Congruence within

A

2%

46
Q

Equipment with positive beam limiting device

A

Image receptor - radiation field alignment

47
Q

IR congruence

A

3%

48
Q

Collimator dials to the size of x and y

A

Accuracy of x-y scale

49
Q

Light source should be ______ at 100 cm distance

A

15 ft - c (160 lux)

50
Q

Used for evaluation of illuminator bulb brightness

A

Photometer

51
Q

Xray beam should mounted properly in metal housing

A

Beam alignmet

QAQC (7 decks)

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