RADT 146 FINAL PAPER QUESTIONS
ANSWERS COMPLETE SOLUTION VIEW
AHEAD GUARANTEED SUCCESS
●● Computed radiography is comprised of:
Answer: 1. Photostimulable Storage Phosphor (PSP)
2. CR Reader
2. Digital Electronics
●● 1. Photostimulable Storage Phosphor (PSP)
Answer: to acquire the x ray projection image
●● 2. CR Reader
Answer: to extract the electronic latent image
●● 3. Digital electronics
Answer: to convert the signals to digital form
●● Is there still a cassette involved with CR?
Answer: 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
Answer: 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?
Answer: 1. screen film: image manifested through chemical processing
2. CR: analog image converted into digital signal
●● Screen film
Answer: patient- intensifying screen (emits light)- film (latent image)-
chemical processing- manifest image
●● History of computed radiography- commercially introduced in
Answer: 1983
●● Over ____ systems in clinical use worldwide ___ countries
Answer: 10,000, 44
●● CR technology is based on certain ____ ____ ____ materials having
an ___ ____ and ____ property known as _____ _____
, Answer: halide based phosphor, energy storage, excitation,
photostimulable luminance (PSL)
●● First hospital to get a computerized system was in which county
Answer: riverside
●● Materials having an energy storage and excitation property is known
as
Answer: photostimulable luminance (PSL)
●● The photostimuable luminance (PSL) enables ___________and
releases _______________
Answer: them to store x ray energy temporarily
that energy upon excitation by a laser beam at a later time
●● Within the PSP you will find the
Answer: phosphors or crystals
- when x rays strike, the crystals will hold onto the energy and when
they are re stimulated they will release light
●● Can you hold the PSP under light?
Answer: yes.
unlike film which cannot be exposed under light
ANSWERS COMPLETE SOLUTION VIEW
AHEAD GUARANTEED SUCCESS
●● Computed radiography is comprised of:
Answer: 1. Photostimulable Storage Phosphor (PSP)
2. CR Reader
2. Digital Electronics
●● 1. Photostimulable Storage Phosphor (PSP)
Answer: to acquire the x ray projection image
●● 2. CR Reader
Answer: to extract the electronic latent image
●● 3. Digital electronics
Answer: to convert the signals to digital form
●● Is there still a cassette involved with CR?
Answer: 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
Answer: 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?
Answer: 1. screen film: image manifested through chemical processing
2. CR: analog image converted into digital signal
●● Screen film
Answer: patient- intensifying screen (emits light)- film (latent image)-
chemical processing- manifest image
●● History of computed radiography- commercially introduced in
Answer: 1983
●● Over ____ systems in clinical use worldwide ___ countries
Answer: 10,000, 44
●● CR technology is based on certain ____ ____ ____ materials having
an ___ ____ and ____ property known as _____ _____
, Answer: halide based phosphor, energy storage, excitation,
photostimulable luminance (PSL)
●● First hospital to get a computerized system was in which county
Answer: riverside
●● Materials having an energy storage and excitation property is known
as
Answer: photostimulable luminance (PSL)
●● The photostimuable luminance (PSL) enables ___________and
releases _______________
Answer: them to store x ray energy temporarily
that energy upon excitation by a laser beam at a later time
●● Within the PSP you will find the
Answer: phosphors or crystals
- when x rays strike, the crystals will hold onto the energy and when
they are re stimulated they will release light
●● Can you hold the PSP under light?
Answer: yes.
unlike film which cannot be exposed under light
