Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
QA Definition |
Planned and systematic actions to provide confidence that a product or service will satisfy its requirements for quality |
|
|
QA in radiotherapy |
Ensures consistency in medical prescriptions, safe fulfilment of prescription regard dose to target, minimal dose to healthy tissue, patient monitoring |
|
|
Why QA? |
Reduce uncertainty and errors Reduce likelihood of accidents or errors occurring Inter-comparison of results Exploitation of improved tech |
|
|
QC |
Regulatory process Quality performance measured with existing standards Action necessary to keep conformance |
|
|
Quality Standards |
Acceptable criteria against which quality of an activity can be assessed |
|
|
IR(ME)R |
Implement basic measures for health protection of individuals against dangers of ionising radiation in relation to medical exposures |
|
|
QA equipment structure |
Initial spec, acceptance testing and calibration QC tests Additional QC tests post maintenance etc. PPM |
|
|
Where is there QA checks in radiotherapy? |
Lasers Dose output Geometrical accuracy of treatment couch |
|
|
QA audits |
Systematic and independent exam to determine if quality activities and results comply with planned arrangements and if they are effective and suitable. |
|
|
Which regulation does QA sit in? |
IR(ME)R |
|
|
QA Test types |
Commissioning Acceptance testing Monitoring Annual tests Post repair or tube replacement |
|
|
3 main QA tests |
Beam alignment and collimation accuracy Tube potential X-ray output |
|
|
How is tube potential measured |
KvP divider with 2 copper plates of different thicknesses. The 2 attenuated x-ray results are converted into 2 low voltages by the ratio module. |
|
|
How is X-ray output measured? |
Ion chamber or semiconductor device. Measured for a range of mAs using varying kVs Ion chambers are multi directional |
