PACS TEST QUESTIONS WITH
CORRECT ANSWERS
What are the 2 types of monitors? - Answer- 1) LCD - liquid crystal display
2) CRT - cathode ray tube
Why is LCD better than CRT? - Answer- - smaller size
- better resolution
- less heat production
- portable
- gives more light
- less maintenance required
What is the # of pixels for diagnostic x-ray? - Answer- 1600x1200
- 2k monitor
What are the types of viewing conditions? - Answer- 1) photopic vision - bright light
vision with cones
2) scotopic vision - dim light vision with rods
Lumen - Answer- Basic photometric unit
Luminous flux - Answer- intensity of light from a source
- emitted into the entire viewing area
Illuminance - Answer- intensity of light incident on a surface
Luminous intensity - Answer- Property of the source of light (viewbox or monitor)
Luminance - Answer- measure of brightness of a source (viewbox or monitor)
What is luminance expressed as? - Answer- Units of candela per square meter or nit
What is the best viewing of a digital display device? - Answer- Straight on
- viewing from the side reduces illumination and contrast
How often is there a quality check for radiology monitors? - Answer- Daily
What does AAPM and SMPTE stand for? - Answer- AAPM = american association of
physicists in medicine
CORRECT ANSWERS
What are the 2 types of monitors? - Answer- 1) LCD - liquid crystal display
2) CRT - cathode ray tube
Why is LCD better than CRT? - Answer- - smaller size
- better resolution
- less heat production
- portable
- gives more light
- less maintenance required
What is the # of pixels for diagnostic x-ray? - Answer- 1600x1200
- 2k monitor
What are the types of viewing conditions? - Answer- 1) photopic vision - bright light
vision with cones
2) scotopic vision - dim light vision with rods
Lumen - Answer- Basic photometric unit
Luminous flux - Answer- intensity of light from a source
- emitted into the entire viewing area
Illuminance - Answer- intensity of light incident on a surface
Luminous intensity - Answer- Property of the source of light (viewbox or monitor)
Luminance - Answer- measure of brightness of a source (viewbox or monitor)
What is luminance expressed as? - Answer- Units of candela per square meter or nit
What is the best viewing of a digital display device? - Answer- Straight on
- viewing from the side reduces illumination and contrast
How often is there a quality check for radiology monitors? - Answer- Daily
What does AAPM and SMPTE stand for? - Answer- AAPM = american association of
physicists in medicine
