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RTE1457 Rad Tech 2 > Unit 5: QA and QC > Flashcards

Unit 5: QA and QC Flashcards

(62 cards)

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1
Q

What is the Joint Commission?

A

accrediting organization where necessary quality measures are taken in healthcare

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2
Q

why are quality measures necessary in healthcare?

A

to improve pt care and provide a high quality of service so pts will return

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3
Q

What is quality assurance?

A

program of observing and assessing the varying aspects of a project, service, or facility to ensure quality standards are achieved

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4
Q

What is the focus of QA?

A

the people and the services they provide (pt scheduling, reception, exam, exam time, reports, image interpretation)

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5
Q

the process of QA should be observed at __________ to verify the process continues to meet standards

A

intervals

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6
Q

what is quality control?

A

set of activities that monitor and maintain systems that produce a product (equipment, instrumentation)

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7
Q

JCAHO will not accredit a hospital if they don’t have a viable

A

QC program

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8
Q

list the three categories of QC:

A

acceptance testing
preventive maintenance (PM)
error maintenance

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9
Q

describe acceptance testing:

when should it be met?

A

testing on new or majorly upgraded equipment prior to and during installation

before final payment will be made

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10
Q

acceptance should be done by a team of what?

A

a dpt or business admin, PACS representative, medical physicist and designated tech

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11
Q

describe preventive maintenance (PM):

when are they usually scheduled?

A

maintenance performed on the equipment to verify if it is functioning properly

6 months or 1 year

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12
Q

who performs preventative maintenance?

A

a service engineer or a medical physicist or tech

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13
Q

describe error maintenance:

A

corrective action required when equipment fails

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14
Q

many facilities prefer to have service ________ in place to ensure timely response during _____________ as well as to cover unexpected ______ _________.

A

contract; downtimes; cost repairs

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15
Q

describe continuous quality control:

A

all levels of people in an organization must participate for any process improvement to be successful

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16
Q

define display workstation

A

any computer that a healthcare worker uses to view digital images

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17
Q

what kind of monitor is market leader due to decreased price and size, increased quality, and lack of heat production?

A

LCD

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18
Q

what is considered the weakest link in the chain of digital imaging?

A

the monitor

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19
Q

quality control standards are regulated by the ______ to ensure quality in any imaging system

A

ACR

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20
Q

what are the three defined areas of a digital image?

A

contrast resolution
spatial resolution
noise

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21
Q

to check for image quality and appearance and geometric distortion-look use the:

A

diagnostic test pattern

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22
Q

what is luminance?

what is it measured in?

A

light coming from monitor

candela/square meter

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23
Q

what is ambient light?

A

any other light source not coming from the monitor

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24
Q

what is a photometer?

A

device that measures luminance of the monitor

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25
for resolution, evaluate the patterns at:
the center and corners of the pattern
26
what is luminance response?
a baseline luminance reading with monitor powered on and off
27
what is luminance dependency? luminance readings are taken at ____ points on monitor and should be within ______ of each other
observation of uniformity with test patters 5; 30%
28
imaging departments plan to periodically backup archived files:
archiving plan
29
what is system uptime?
monitoring of how long the system is down for any reason that is logged
30
what is a super user?
user trained on all aspects of the system and can make facility specific changes after the vendor has left
31
what is total quality management? it includes maintenance of:
evaluation of the overall efficiency and effectiveness of an imaging system (all aspects of CQI, QC, and QA) equipment, image acquisition, and processing standards
32
what are some daily/weekly QC duties for CR?
inspect CR reader by looking at air flow vents, make sure space is available and vents aren't blocked, dusting procedure
33
What are some daily/weekly QC duties for technologist workstations?
inspect screen, mouse, and keyboard and clean if needed
34
Describe Reject Analysis:
examination of repeat exposure so data can be gathered for the repeat reason, tech performing the study, and number of rejects
35
what are reasons to repeat and image?
positioning, overexposed, underexposed, motion, collimation, artifact, no exposure, equipment failure
36
What are NOT reasons to repeat an image?
wrong exam selection (body part), no marker, wrong accession number, wrong pt name selected
37
who is responsible for maintaining the mechanics of the equipment?
service engineer QC
38
What is preventative maintenance?
testing for accuracy and reproducibility and inspection of the x-ray generator, tube and calibration, and processor
39
what is the role of the medical physicist within a radiology dpt?
perform annual or semiannual testing on all radiation producing equipment help establish guidelines in digital imaging
40
what is the required filtration for radiographic and fluoro tubes operated at 70 kVp or above? for mammo tubes?
2.5 mm Al equiv 0.5 mm Al equiv
41
what can be used to evaluate HVL?
aluminum sheets
42
what is a roentgen meter?
meter that assesses HVL
43
collimation must not exceed ______ of associated light field for a chosen SID. this is performed:
+ or - 2% semiannually
44
what are the tools used to test the EFS?
pin hole camera star test pattern line pair resolution tool
45
for an EFS smaller than 0.3 mm, use the: for an EFS larger than 0.3 mm, use the:
star test pattern pin hole camera
46
for focal spot resolution, use the:
line pair resolution tool
47
what is the tolerance from the stated focal spot size and the measured focal spot size?
40-50%
48
What is the tolerance from the stated kVp during a QC test for standard radiography and mammo?
stated: + or - 5% of kVp selected mammo: + or - 1 kVp
49
How do we test for timer accuracy and how often?
a spinning top or digital timer tester annually
50
what sort of tolerance is allowed for stated exposure time?
+ or - 5%
51
What are back up exposure standards for AEC?
must terminate at 6 secs or 600 mAs
52
define exposure (mA) linearity: what is the tolerance for radiation detector sensitivy? when should it be tested?
ability of a system to produce a constant radiation output for multiple combinations of mA and exposure time; + or - 10%; annually
53
define exposure reproducibility: what is the tolerance?
exposing the same technique 5-10 times and measuring the radiation output from each exposure; + or - 5%
54
how do we test for mA linearity and reproducibility?
roentgen meter
55
What is the minimum SSD for stationary and mobile fluoroscopy?
stationary: 15" mobile: 12"
56
What is the max exposure per min during fluoro?
0.38 mGy
57
what is a penetrometer used for?
to demonstrate changes in contrast with varying kVp
58
Which agency is in charge of making sure the manufacturing of imaging equipment is up to required standards?
59
the average total annual exposure to humans is about ____ mSv per year from natural resources
3.6
60
ALARA use:
high kVp, low mAs smallest field size shielding proper filtration
61
max annual dose is: max annual limit for eye lens is: all other body parts is:
50 mSv 150 mSv 500 mSv
62
Cardinal Principles of Radiation Protection:
reduce time max distance max shielding

RTE1457 Rad Tech 2 (5 decks)

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