The release of trapped energy in a meta stable F center of a BaFBr crystals in the PSP
of a CR are triggered by the exposure to visible laser light in the:
a. red spectrum
b. blue violet spectrum
c. green spectrum
d. ultraviolet spectrum
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a. red spectrum
The adjustment of the image contrast with a digital or computed radiographic unit is
accomplished through the used of the:
a. frame integration controls
b. window width controls
,c. mask controls
d. time interval controls
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b. window width controls
In a laser or Cr reader the galvanometer or rotating polygon is used to:
a. modulate the radio frequency of the laser beam
b. deflect the laser beam back and forth
c. amplify the signal detected by the light channeling guide
d. convert the analog signal from the PM tube
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b. deflect the laser beam back and forth
The main advantage of an amorphous selenium DDR imaging system compared to a
cesium iodide amorphous silicon used in IDR imaging system is its:
a. higher spatial resolution
b. lower resulting dose to patient
c. higher detective quantum efficiency
d. increased signal to noise ratio
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a. higher spatial resolution
, The organized arrangement of a digital image into columns and rows for its display on
a cathode ray tube (monitor) is referred to as the:
a. image matrix
b. signal plate
c. noise pattern
d. hybrid mode
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a. image matrix
The energy of an xray beam is captured in photstimulable phosphor imaging plate
(PSP) of a CR as a series of electrons that are trapped in empty spaces in the crystal
lattice called:
a. excited luminescence bands
b. meta stable F centers
c. activated conduction bands
d. photomultiplier receptor sites
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b. meta stable F centers
Because DDR and IDR are not cassette based they normally cannot be used for
a. mobile applications
b. tube angulated techniques
c. tomographic applications
d. extremity imaging
Give this one a try later!
of a CR are triggered by the exposure to visible laser light in the:
a. red spectrum
b. blue violet spectrum
c. green spectrum
d. ultraviolet spectrum
Give this one a try later!
a. red spectrum
The adjustment of the image contrast with a digital or computed radiographic unit is
accomplished through the used of the:
a. frame integration controls
b. window width controls
,c. mask controls
d. time interval controls
Give this one a try later!
b. window width controls
In a laser or Cr reader the galvanometer or rotating polygon is used to:
a. modulate the radio frequency of the laser beam
b. deflect the laser beam back and forth
c. amplify the signal detected by the light channeling guide
d. convert the analog signal from the PM tube
Give this one a try later!
b. deflect the laser beam back and forth
The main advantage of an amorphous selenium DDR imaging system compared to a
cesium iodide amorphous silicon used in IDR imaging system is its:
a. higher spatial resolution
b. lower resulting dose to patient
c. higher detective quantum efficiency
d. increased signal to noise ratio
Give this one a try later!
a. higher spatial resolution
, The organized arrangement of a digital image into columns and rows for its display on
a cathode ray tube (monitor) is referred to as the:
a. image matrix
b. signal plate
c. noise pattern
d. hybrid mode
Give this one a try later!
a. image matrix
The energy of an xray beam is captured in photstimulable phosphor imaging plate
(PSP) of a CR as a series of electrons that are trapped in empty spaces in the crystal
lattice called:
a. excited luminescence bands
b. meta stable F centers
c. activated conduction bands
d. photomultiplier receptor sites
Give this one a try later!
b. meta stable F centers
Because DDR and IDR are not cassette based they normally cannot be used for
a. mobile applications
b. tube angulated techniques
c. tomographic applications
d. extremity imaging
Give this one a try later!
