RT 206 FINAL | FROM QUESTION TO PERFECTION| STUDY
WITH CONFIDENCE!
how many shades of gray can be displayed with a bit depth of 10 bits? Answer: 1024
the amount of exposure required for CR is similar to which of the following film-screen
systems? Answer: 200 speed
what is the spatial resolution of a 24cm x 30cm IP? Answer: 4 lp/mm
a cassette-based IP requires ___ of exposure to produce an optimum quality image. Answer: 1
mR
which of the following occurs when the IP or detector is grossly overexposed? Answer:
saturation
in digital radiography, Nyquist is referring to which of the following? Answer: the sampling
frequency of the digital data
If the Nyquist frequency and the grid frequency are approximately the same, which of the
following may occur? Answer: Moire effect
edge enhancement can be applied to a digital image to improve which of the following?
Answer: the contrast along the edges of a structure
Applying too much edge enhancement to a digital image can result in which of the following?
A. Loss of visibility of details
B. Halo artifact
C. Loss of spatial resolution
D. Loss of recorded details Answer: B. Halo artifact
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, the film transistors (TFT) are found in which type of digital system? Answer: cassette-less
the latent image can remain stored in the the PSP plate for __ hours before information is loss.
Answer: 8
Contrast resolution is a major advantage of digital imaging. What determines high contrast
resolution in a digital image? Answer: high exposure and low noise
a flat-panel detector requires __ of exposure to produce an optimum quality image. Answer:
0.5 mR
___ releases electrons when struck by light photons and ___ releases electrons when struck by
x-ray photons. Answer: amorphous silicon, amorphous selenium
what is the definition of amorphous Answer: A noncrystalline state of an otherwise crystalline
material
Detectors can detect information from which source? Answer: ionization radiation, ultrasonic
waves, and radiofrequencies
detectors acquire information by Answer: scanning and array detection
the latent image is created by energy transfer during Answer: photoelectric interations
the latent image will lose about 25% of its energy in Answer: 8 hours
the CR plate is scanned by Answer: helium-neon laser beam
When the CR imaging plate is scanned, the phosphors of the latent image release energy in the
form of? Answer: light
During CR imaging plate processing, the laser frees trapped electrons, allowing them to return
to a lower energy state. This process is known as Answer: photostimulated luminescence
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
WITH CONFIDENCE!
how many shades of gray can be displayed with a bit depth of 10 bits? Answer: 1024
the amount of exposure required for CR is similar to which of the following film-screen
systems? Answer: 200 speed
what is the spatial resolution of a 24cm x 30cm IP? Answer: 4 lp/mm
a cassette-based IP requires ___ of exposure to produce an optimum quality image. Answer: 1
mR
which of the following occurs when the IP or detector is grossly overexposed? Answer:
saturation
in digital radiography, Nyquist is referring to which of the following? Answer: the sampling
frequency of the digital data
If the Nyquist frequency and the grid frequency are approximately the same, which of the
following may occur? Answer: Moire effect
edge enhancement can be applied to a digital image to improve which of the following?
Answer: the contrast along the edges of a structure
Applying too much edge enhancement to a digital image can result in which of the following?
A. Loss of visibility of details
B. Halo artifact
C. Loss of spatial resolution
D. Loss of recorded details Answer: B. Halo artifact
APPHIA – Crafted with Care and Precision for Academic Excellence.
1
, the film transistors (TFT) are found in which type of digital system? Answer: cassette-less
the latent image can remain stored in the the PSP plate for __ hours before information is loss.
Answer: 8
Contrast resolution is a major advantage of digital imaging. What determines high contrast
resolution in a digital image? Answer: high exposure and low noise
a flat-panel detector requires __ of exposure to produce an optimum quality image. Answer:
0.5 mR
___ releases electrons when struck by light photons and ___ releases electrons when struck by
x-ray photons. Answer: amorphous silicon, amorphous selenium
what is the definition of amorphous Answer: A noncrystalline state of an otherwise crystalline
material
Detectors can detect information from which source? Answer: ionization radiation, ultrasonic
waves, and radiofrequencies
detectors acquire information by Answer: scanning and array detection
the latent image is created by energy transfer during Answer: photoelectric interations
the latent image will lose about 25% of its energy in Answer: 8 hours
the CR plate is scanned by Answer: helium-neon laser beam
When the CR imaging plate is scanned, the phosphors of the latent image release energy in the
form of? Answer: light
During CR imaging plate processing, the laser frees trapped electrons, allowing them to return
to a lower energy state. This process is known as Answer: photostimulated luminescence
APPHIA – Crafted with Care and Precision for Academic Excellence.
2
