19 QA + Clinical Environment Flashcards
0
Q
What are the requirements of QA?
A
Multiple evaluations of the system’s components
Repairs
Preventative maintenance
Record keeping
1
Q
What is quality assurance?
A
Routine periodic evaluation of the US system to guarantee optimal image quality
2
Q
What are goals of QA?
A
Proper equipment operation
Detect gradual changes
Minimize downtime
Reduce number of repeat scans
3
Q
What are different methods for QA?
A
Test under known, defined conditions
Constant instrument settings
Use phantom with measurable characteristics
Image in identical environment
4
Q
What are different performance measures?
A
Minimum sensitivity Normal sensitivity Sensitivity Dead zone Range accuracy Registration accuracy Horizontal calibration Focal zone Longitudinal resolution Lateral resolution Compensation operation or uniformity Mock cysts and tumors Display and gray scale dynamic range
