Bushong Ch 12
Computed Radiography (CR) - answercassette or cassette-based digital radiography;
the digital acquisition modality that uses storage phosphor plates to produce images
Which uses cassettes, CR or DR? - answerComputed Radiography (CR)
photostimulable luminescence - answerThe emission of visible light from the
photostimulable phosphor when stimulated by a high-intensity laser beam.
Europium (Eu) - answeractivator in PSL; responsible for storage
latent image - answerinvisible image created after exposure but before processing ;
"unprocessed cassette"
Photostimulable phosphor (PSP) - answera phosphor used in CR plates to absorb the
x-ray energy and store it until it is processed by a special unit and laser light
Layers of PSP screen/plate - answerprotective layer
phosphor layer
reflective layer
BASE
antistatic layer
turbid - answerPSP particles scatter light excessively
storage phosphor screen (SPS) - answerscreens that store electrons in a metastable
state; OR the phosphor layer
2 types of SPS - answer1. Conventional powder PSP (common)
2. Needle PSP
Needle PSP - answerSPS grown in linear filaments the enhance absorption of x-ray
beams (more resolution)
stages of image processing - answer1. expose
2. stimulate
3. read
4. erase
desrcibe what happens in the stage of exposure. - answer1. the energy transfer results
in excitation of electrons into a metastable state (signal is formed)
Computed Radiography (CR) - answercassette or cassette-based digital radiography;
the digital acquisition modality that uses storage phosphor plates to produce images
Which uses cassettes, CR or DR? - answerComputed Radiography (CR)
photostimulable luminescence - answerThe emission of visible light from the
photostimulable phosphor when stimulated by a high-intensity laser beam.
Europium (Eu) - answeractivator in PSL; responsible for storage
latent image - answerinvisible image created after exposure but before processing ;
"unprocessed cassette"
Photostimulable phosphor (PSP) - answera phosphor used in CR plates to absorb the
x-ray energy and store it until it is processed by a special unit and laser light
Layers of PSP screen/plate - answerprotective layer
phosphor layer
reflective layer
BASE
antistatic layer
turbid - answerPSP particles scatter light excessively
storage phosphor screen (SPS) - answerscreens that store electrons in a metastable
state; OR the phosphor layer
2 types of SPS - answer1. Conventional powder PSP (common)
2. Needle PSP
Needle PSP - answerSPS grown in linear filaments the enhance absorption of x-ray
beams (more resolution)
stages of image processing - answer1. expose
2. stimulate
3. read
4. erase
desrcibe what happens in the stage of exposure. - answer1. the energy transfer results
in excitation of electrons into a metastable state (signal is formed)
