QA/QC

Question 1

_____ are tools to optimize the performance of x-ray facility personnel and fluoroscopic and ancillary equipment operation..

Answer 1

Quality assurance & Quality Control

Question 2

_____- test are designed to detect slowly evolving x-ray equipment abnormalities

Answer 2

QC test

Question 3

What is the major reason for QA program program?

Answer 3

to optimize diagnosis and the benefits obtained

Question 4

What are the 4 major steps in QA

Answer 4

1. Acceptance testing
2. Establishment of baseline performance equiment
3. Diagnosis of changes in equipment performance
4. Verification of correction

Question 5

When should verification in writing be done to show that the equipment is safe and in proper condition

Answer 5

1. Prior to initial use
2. Yearly after initial verification
3. After repairs

Question 6

What should the QA manual include?

Answer 6

1. Supervision of QA
2. Performing QC test
3. Repairing or servicing of fluoro and ancillary equipment

Question 7

Records of all QC test should be kept for how long?

Answer 7

3 years

Question 8

What are the test verification that should be done on a daily basis

Answer 8

1. Brightness/ contrast of tv monitor
2. Verification of protective devices such as : lead curtains, Lead panel, Bucky slot cover & fluoro tower locks
3. Collimation
4. kVp & mA monitoring
5. Compression device

Question 9

What phantom should be used to test brightness / contrast of tv monitor

Answer 9

step wedge

Question 10

_____ is permanently attached to the mobile c-arm and provides provides for a source-skin distance of not less than 12 inches,

Answer 10

cones/ spacers

Question 11

____ is leakage and scattered radiation.

Answer 11

stray radiation

Question 12

____ barrier sufficient to attenuate stray radiation to the required degree

Answer 12

secondary protective barrier

Question 13

_____ is part of the radiation which passes through the window, aperture, cone, or other collimating device of the tube housing.

Answer 13

Useful beam

Question 14

barrier sufficient to attenuate the useful beam to the required degree

Answer 14

Primary protective barrier

Question 15

___ is material placed in the useful beam to absorb preferentially the less penetrating radiations.

Answer 15

filtration

Question 16

What is the purpose of filtration

Answer 16

to remove low energy x-rays before they reach the patient

Question 17

What are the different types of filtration

Answer 17

1. Added filter ( placed in direct path ox x-ray beam)
2. Inherent filter ( x-ray tube and housing)
3. Total filtration ( The sum of the inherent and added filters)

Question 18

Sheets of metal (usually aluminum or its equivalent) that are placed in the direct path of the X-ray beam.

Answer 18

Added filter

Question 19

____ The X-ray tube and its housing such as the glass envelope (window) through which the X-ray beam passes.

Answer 19

Inharent filter

Question 20

Term for The sum of the inherent and added filters

Answer 20

Total filtration

Question 21

Regulations require the total filtration permanently in the useful x-ray beam at normal operating voltages may not be less than _____equivalent for fluoroscopy.

Answer 21

2.5 mm AL

Question 22

the intensity of the x-ray beam at the tabletop of a fluoroscope should not exceed _____rads/min for each mA of operating tube current at 80 kVp.

Answer 22

2.1- 2.2 rads/ min

Question 23

the thickness of absorbing material necessary to reduce the x-ray intensity to half its original value

Answer 23

HVL

Question 24

HVL are used into 2 different situations in determining ___ & ___

Answer 24

1. Quality of x-ray beam

2. Barrier thickness

Question 25

Energy is lost by which 3 methods

Answer 25

1. Photoelectric effect ( most important to low energies)
2. Compton scattering
3. Pair production

Question 26

Which method by which energy is loss is most important to low energies?

Answer 26

Photoelectric effect