RADt 146- Intro- Unit 3- Computed Radiography
(4) Questions with100% Correct Answers
Computed radiography is the generic term applied to an ______ _____
imaging system
Computed radiography is comprised of:
1. Photostimulable Storage Phosphor (PSP)
2. CR Reader
2. Digital Electronics
1. Photostimulable Storage Phosphor (PSP)
to acquire the x ray projection image
2. CR Reader
to extract the electronic latent image
3. Digital electronics
to convert the signals to digital form
Is there still a cassette involved with CR?
yes. instead of a film or IS screen, we have the PSP which is within the cassette
Screen film imaging vs Computed Radiography (CR), what they have in common
1. both use an x ray sensitive image receptor
- both incased in a protective cassette
, 2. both can be used interchangeably with any x ray imaging system
3. both carry a latent image that must be made visible by processing
How do screen film imaging and computed radiography differ?
1. screen film: image manifested through chemical processing
2. CR: analog image converted into digital signal
Screen film
patient- intensifying screen (emits light)- film (latent image)- chemical processing- manifest
image
History of computed radiography- commercially introduced in
1983
Over ____ systems in clinical use worldwide ___ countries
10,000, 44
CR technology is based on certain ____ ____ ____ materials having an ___ ____ and ____
property known as _____ _____
halide based phosphor, energy storage, excitation, photostimulable luminance (PSL)
First hospital to get a computerized system was in which county
riverside
Materials having an energy storage and excitation property is known as
photostimulable luminance (PSL)
(4) Questions with100% Correct Answers
Computed radiography is the generic term applied to an ______ _____
imaging system
Computed radiography is comprised of:
1. Photostimulable Storage Phosphor (PSP)
2. CR Reader
2. Digital Electronics
1. Photostimulable Storage Phosphor (PSP)
to acquire the x ray projection image
2. CR Reader
to extract the electronic latent image
3. Digital electronics
to convert the signals to digital form
Is there still a cassette involved with CR?
yes. instead of a film or IS screen, we have the PSP which is within the cassette
Screen film imaging vs Computed Radiography (CR), what they have in common
1. both use an x ray sensitive image receptor
- both incased in a protective cassette
, 2. both can be used interchangeably with any x ray imaging system
3. both carry a latent image that must be made visible by processing
How do screen film imaging and computed radiography differ?
1. screen film: image manifested through chemical processing
2. CR: analog image converted into digital signal
Screen film
patient- intensifying screen (emits light)- film (latent image)- chemical processing- manifest
image
History of computed radiography- commercially introduced in
1983
Over ____ systems in clinical use worldwide ___ countries
10,000, 44
CR technology is based on certain ____ ____ ____ materials having an ___ ____ and ____
property known as _____ _____
halide based phosphor, energy storage, excitation, photostimulable luminance (PSL)
First hospital to get a computerized system was in which county
riverside
Materials having an energy storage and excitation property is known as
photostimulable luminance (PSL)
