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physics spring semester 2015 > quality control > Flashcards

quality control Flashcards

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1
Q

quality assurance

A

deals with people

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2
Q

quality control

A

deals with instrumentation and equipment

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3
Q

SMDA

Safe Medical Devices Act

A

mandates that any serious injury or death due to medical device be reported

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4
Q

MQSA

Mammography Quality Standards Act

A

requires mammography facilities to be approved by the FDA

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5
Q

FOCUS-PDCA

A

the premier quality measurement consulting book

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6
Q

what does FOCUS stand for

A

F ind a process to improve
O rganize an effort to work on improvement
C larify current knowledge of the process
U nderstand process variation and capability
S elect a strategy for continued improvement

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7
Q

What does PDCA stand for

A 
P lan
D o 
C heck 
A ct 
it is a way of continuously checking progress in each step of FOCUS
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8
Q

outcome analysis

A

if the patients disease agrees with the radiologist’s diagnosis

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9
Q

T or F
the QA activities should all be monitored by the imaging team, however they are principally the responsibility of the radiologist

A

TRUE

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10
Q

QC DEALS MORE WITH?

A

THE EQUIPMENT

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11
Q

WHAT ARE OTHER REASONS FOR DOING QC BESIDES PATIENT CARE

A

our litigious society demands QC records
some insurance companies will only reimburse if there’s a QC program
JCAHO will not approve a facility that doesn’t have a QC program
most states require it

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12
Q

an acceptable QC program has 3 steps

A

acceptance testing
routine performance monitoring
error maintenance

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13
Q

T or F

periodic monitoring of equipment is required

A

TRUE

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14
Q

T or F

annual monitoring is acceptable unless there is a new piece of equipment installed

A

TRUE

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15
Q

acceptance testing

A

performed before newly installed or majorly repaired equipment can be accepted by dept.
determines whether equip. is performing within the vendor’s specifications

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16
Q

acceptance testing is done by someone other than the manufacturer’s rep for example

A

radiation physicist

service personnel employed by hospital

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17
Q

Routine maintenance

A

performed to ensure that the equipment is performing as expected
helps to catch problems before they become radiographically apparent

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18
Q

Preventative maintenance PM

A

usually alleviates unnecessary repair

if equip. is not performing up to standards then repair is necessary

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19
Q

error maintenance

A

when errors occur in equipment performance, corrective action must occur

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20
Q

filtration

A

the most important patient protection device

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21
Q

state requires radiographic units have a minimum total filtration of

A

2.5 mm Al

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22
Q

3 tools used to measure focal spot size and

A

pinhole camera
star pattern
slit camera (most popular)

23
Q

line pair test tool is used to determine

A

spatial frequency

24
Q

if the phototimer fails the backup timer should terminate the exposure at

A

6s or 600 mAs

whichever comes first

25
Q

spinning top test

A

used to measure single phase generators

26
Q

motorized synchronous spinning top

A

used for 3 phase units

27
Q

electronic timers should be able to go as low as

A

1ms (1/1000s)

28
Q

dosimeter

A

measures radiation intensity at various combinations of mA and expsure time

29
Q

exposure reproducibility

A

when using any combo of kVp, mA and exposure time, the RT decides to change one factor and then return to the previous value of radiation exposure, the previous value should be precisely the same
2 methods used

30
Q

intensifying screens

A

require periodic attention to minimize appearance of artifacts
looks like a localized lack of sharpness on a radiograph
Use a wire mesh test

31
Q

aprons, gloves, and gonadal shields should be radiographed

A

annually for defects

32
Q

viewbox illumination should be photometrically analyzed

A

annually

33
Q

photometers

A

used to measure light intensity at several areas of the illuminator

34
Q

film illuminators should not vary by more than

A

+ or - 10% over surface of illuminator

35
Q

exposure rate

A

federal law and most states require that entrance skin exposure shall not exceed 10R/min (100mGy/min)

36
Q

interventional procedures fluoro may be equipped with a high level control. this allows an entrance skin exposure up to

A

20r/min (200mGy/min)

37
Q

An entrance skin exposure for a cassette spot film is

A

200mR

38
Q

an entrance skin exposure for a photofluorospot is

A

100mR

39
Q

the use of what will double the ESE during photofluorospot

A

the use of a grid

40
Q

fluoroscopic ABC should be evaluated

A

annually

41
Q

the indicated section that is to be tomogrammed and the measured level should be within

A

+ or - 5mm

42
Q

increments from on tomo section to the next should be accurate within

A

+ or - 2mm

43
Q

SMPTE

A

society of motion pictures and television engineers test pattern
helps to point out any gross deviations in luminance adjustments

44
Q

illuminance meter

A

used to evaluate monitor display reflection and assess ambient light conditions

45
Q

2 types of photometers used for luminace meter

A
  1. near range

2. telescopic

46
Q

near range

A

used in close proximity to monitor

47
Q

telescopic

A

used to test from a distance of 1 m

48
Q

DICOM

A

digital imaging and communication

standard that enables imaging systems form different manufacturers to communicate

49
Q

GSDF

A

gray scale display function

allows medical images to be transferred according to DICOM standards

50
Q

VESA

A

video electronics standard association

provides set of instructions to help evaluate system performance

51
Q

AAPM TG 18

A

american association of physicists in medicine task group report 18
set of test patterns to ensure acceptable clinical performance

52
Q

TG 18 QC

A

Used to assess geometric distortion

53
Q

Daily QC duties for RT

A

Inspect and clean cassettes
Inspect hinge and latch
Erase plates

54
Q

Monthly QC duties

A

Reject analysis
Clean plates
Artifact identification
Problem reporting

physics spring semester 2015 (5 decks)

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