CCD /CMOS HOMEWORK QUESTIONS
AND ANSWERS FOR CHAPTER 6
TEXTBOOK
CCDs are much more compact than TV tubes and CCDs are no susceptible
to _____________ the way that TV tubes are.
Correct Answer -electron scanning errors
In digital flouro, the CCD is a great replacement for the ______ in an image
intensifier because the CCD size is closely matched with the output
phosphor of an image intensifier.
Correct Answer -television (TV) pick up tube
________ is the process of reducing the phosphor output image to the size
of the active area of the CCD chip.
Correct Answer -Demagnification
The demagnification uses ____, ____, and ____ to accomplish this.
Correct Answer -lenses, optics, and mirrors
In general radiography, CCDS may be tiled in a _____ array to a single
CCD.
Correct Answer -16 x 12
Another way CCDs are used in a whole body scanner, where 12 CCD
cameras are coupled to ________ with tapered fiber optics.
Correct Answer -gadolinium sulfur dioxide scintillators
, The strongest advantage of CCDS is their ______, and the greatest
disadvantage relates to ____ and ____.
Correct Answer -modular design
demagnification issues/reduced DQE
Developed by NASA, _______ systems use a scintillator that, when struck
with x-ray photons, convert x-rays into light photons and store them in
capacitors.
Correct Answer -complementary metal oxide semiconductor (CMOS)
Each pixel or detector elements has its own _____, which is switched on
and off by circuitry within the pixel, converting light photons into electrical
charges.
Correct Answer -amplifier
Voltage from the amplifier is converted by an ____.
Correct Answer -ADC
A _______ is a solid chemical element or compound that conducts
electricity under some conditions but not others, making it a good medium
for the control of electrical current.
Correct Answer -semiconductor
Its ability to conduct current varies depending on the amount of current or
voltage it receives or on the ______ of the radiation by x-rays.
Correct Answer -intensity
AND ANSWERS FOR CHAPTER 6
TEXTBOOK
CCDs are much more compact than TV tubes and CCDs are no susceptible
to _____________ the way that TV tubes are.
Correct Answer -electron scanning errors
In digital flouro, the CCD is a great replacement for the ______ in an image
intensifier because the CCD size is closely matched with the output
phosphor of an image intensifier.
Correct Answer -television (TV) pick up tube
________ is the process of reducing the phosphor output image to the size
of the active area of the CCD chip.
Correct Answer -Demagnification
The demagnification uses ____, ____, and ____ to accomplish this.
Correct Answer -lenses, optics, and mirrors
In general radiography, CCDS may be tiled in a _____ array to a single
CCD.
Correct Answer -16 x 12
Another way CCDs are used in a whole body scanner, where 12 CCD
cameras are coupled to ________ with tapered fiber optics.
Correct Answer -gadolinium sulfur dioxide scintillators
, The strongest advantage of CCDS is their ______, and the greatest
disadvantage relates to ____ and ____.
Correct Answer -modular design
demagnification issues/reduced DQE
Developed by NASA, _______ systems use a scintillator that, when struck
with x-ray photons, convert x-rays into light photons and store them in
capacitors.
Correct Answer -complementary metal oxide semiconductor (CMOS)
Each pixel or detector elements has its own _____, which is switched on
and off by circuitry within the pixel, converting light photons into electrical
charges.
Correct Answer -amplifier
Voltage from the amplifier is converted by an ____.
Correct Answer -ADC
A _______ is a solid chemical element or compound that conducts
electricity under some conditions but not others, making it a good medium
for the control of electrical current.
Correct Answer -semiconductor
Its ability to conduct current varies depending on the amount of current or
voltage it receives or on the ______ of the radiation by x-rays.
Correct Answer -intensity
