QA and QC Study Guide

Question 1

What type of artifact would dirt in the light guide of a CR reader produce? In other words, how would it present on a radiograph?

Answer 1

white streaks

Question 2

how many AEC detector cells are there?

Answer 2

3

Question 3

for an EFS of 0.3 mm or smaller, what type of test is recommended by NEMA?

Answer 3

star test pattern

Question 4

what is the accepted tolerance for the stated EFS and the measured EFS?

Answer 4

40-50%

Question 5

QA deals with mostly:

Answer 5

the people and the services they provide

Question 6

the exposure indicator is a measure of:

Question 7

what is mA linearity?

Answer 7

ability of a system to produce constant radiation output for multiple combinations of mA and exposure times

Question 8

what is the reproducibility test?

Answer 8

exposing the same technique 5-10 times and measuring the radiation output for each exposure

Question 9

QC deals with:

Answer 9

monitoring and maintaining equipment and instrumentation of a system

Question 10

what is the post processing function that blackens areas around an image to reduce eye strain?

Question 11

What would contribute most to degradation of the SNR?

Answer 11

luminance response

Question 12

Which organization has authority over the design and manufacture of x-ray equipment?

Answer 12

TQM

Question 13

HVL is what type of test?

Answer 13

QC

Question 14

what are the names of the two monitor test patterns?

Answer 14

SMPTE
AAPM TG18

Question 15

what is the unit of measure for monitor luminace?

Answer 15

candela/square meter

Question 16

What is the QC standard for ambient light in a reading room?

Answer 16

limit the amount of ambient light sources as much as possible

Question 17

Which accrediting body requires effective QC/QA programs?

Answer 17

TJC/JCAHO

Question 18

what is the emergency back up of PACS called?

Answer 18

archiving plan

Question 19

what is the total embryonic/fetal dose allowed for a 9 month gestation?

Answer 19

5 mSv

Question 20

what is the max annual dose limit for an occupational worker?

Answer 20

50 mSv

Question 21

all protective lead apparel should be checked how often?

Answer 21

annually

Question 22

how often should repeat analysis be performed?

Answer 22

monthly

Question 23

erasure of plates should take place on a _______ basis.

Answer 23

daily

Question 24

what is the tolerance between the light field and the actual collimation?

Answer 24

+ or - 2%

Question 25

the AEC backup timer MUST terminate an exposure at?

Answer 25

6 secs or 600 mAs

Question 26

what is the tolerance between the stated and actual kVp?

Answer 26

+ or - 5%

Question 27

what is the tolerance between the stated and actual exposure time?

Answer 27

+ or - 5%

Question 28

CQI focuses mainly on what?

Answer 28

improving the overall process

Question 29

proper cleaning of imaging plates should be done on a _______ basis.

Answer 29

monthly

Question 30

what is the average total radiation exposure to humans from natural sources?

Answer 30

3.6 mSv

Question 31

what is the max annual dose limit for the eye lens?

Answer 31

150 mSv

Question 32

what are the cardinal rules of radiation protection?

Answer 32

reduce time max distance max shielding